chore: add sdk links to readme

LICENSE

@@ -0,0 +1,177 @@
+
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+
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+      the terms of any separate license agreement you may have executed
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+      whether in tort (including negligence), contract, or otherwise,
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+   END OF TERMS AND CONDITIONS

README.md

@@ -1,14 +1,14 @@
 # Kevo
 
-A lightweight, minimalist Log-Structured Merge (LSM) tree storage engine written
-in Go.
+[![Go Report Card](https://goreportcard.com/badge/github.com/KevoDB/kevo)](https://goreportcard.com/report/github.com/KevoDB/kevo)
+[![GoDoc](https://godoc.org/github.com/KevoDB/kevo?status.svg)](https://godoc.org/github.com/KevoDB/kevo)
+[![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
+
+A lightweight, minimalist Log-Structured Merge (LSM) tree storage engine written in Go.
 
 ## Overview
 
-Kevo is a clean, composable storage engine that follows LSM tree
-principles, focusing on simplicity while providing the building blocks needed
-for higher-level database implementations. It's designed to be both educational
-and practically useful for embedded storage needs.
+Kevo is a clean, composable storage engine that follows LSM tree principles, focusing on simplicity while providing the building blocks needed for higher-level database implementations. It's designed to be both educational and practically useful for embedded storage needs.
 
 ## Features
 
@@ -31,9 +31,16 @@ and practically useful for embedded storage needs.
 ### Installation
 
 ```bash
-go get github.com/jeremytregunna/kevo
+go get github.com/KevoDB/kevo
 ```
 
+### Client SDKs
+
+Kevo provides client SDKs for different languages to connect to a Kevo server:
+
+- **Go**: [github.com/KevoDB/kevo/pkg/client](https://github.com/KevoDB/kevo/pkg/client)
+- **Python**: [github.com/KevoDB/python-sdk](https://github.com/KevoDB/python-sdk)
+
 ### Basic Usage
 
 ```go
@@ -43,7 +50,7 @@ import (
     "fmt"
     "log"
 
-    "github.com/jeremytregunna/kevo/pkg/engine"
+    "github.com/KevoDB/kevo/pkg/engine"
 )
 
 func main() {
@@ -103,8 +110,7 @@ Included is an interactive CLI tool (`kevo`) for exploring and manipulating data
 go run ./cmd/kevo/main.go [database_path]
 ```
 
-Will create a directory at the path you create (e.g., /tmp/foo.db will be a
-directory called foo.db in /tmp where the database will live).
+Will create a directory at the path you create (e.g., `/tmp/foo.db` will be a directory called `foo.db` in `/tmp` where the database will live).
 
 Example session:
 
@@ -159,6 +165,8 @@ Kevo is built on the LSM tree architecture, consisting of:
 - **Compaction**: Background process to merge and optimize SSTables
 - **Transactions**: ACID-compliant operations with reader-writer concurrency
 
+For more details, see the documentation in the [docs](./docs) directory.
+
 ## Benchmarking
 
 The storage-bench tool provides comprehensive performance testing:
@@ -186,12 +194,27 @@ go test ./...
 
 # Run benchmarks
 go test ./pkg/path/to/package -bench .
+
+# Run with race detector
+go test -race ./...
 ```
 
+## Project Status
+
+This project is under active development. While the core functionality is stable, the API may change as we continue to improve the engine.
+
 ## Contributing
 
 Contributions are welcome! Please feel free to submit a Pull Request.
 
+1. Fork the repository
+2. Create your feature branch (`git checkout -b feature/amazing-feature`)
+3. Commit your changes (`git commit -m 'Add some amazing feature'`)
+4. Push to the branch (`git push origin feature/amazing-feature`)
+5. Open a Pull Request
+
+See our [contribution guidelines](CONTRIBUTING.md) for more information.
+
 ## License
 
 Copyright 2025 Jeremy Tregunna

cmd/kevo/main.go

@@ -1,20 +1,25 @@
 package main
 
 import (
+	"context"
+	"flag"
 	"fmt"
 	"io"
+	"log"
 	"os"
+	"os/signal"
 	"path/filepath"
 	"strings"
+	"syscall"
 	"time"
 
 	"github.com/chzyer/readline"
 
-	"github.com/jeremytregunna/kevo/pkg/common/iterator"
-	"github.com/jeremytregunna/kevo/pkg/engine"
+	"github.com/KevoDB/kevo/pkg/common/iterator"
+	"github.com/KevoDB/kevo/pkg/engine"
 
 	// Import transaction package to register the transaction creator
-	_ "github.com/jeremytregunna/kevo/pkg/transaction"
+	_ "github.com/KevoDB/kevo/pkg/transaction"
 )
 
 // Command completer for readline
@@ -43,9 +48,14 @@ const helpText = `
 Kevo (kevo) - A lightweight, minimalist, storage engine.
 
 Usage:
-  keco [database_path]      - Start with an optional database path
+  kevo [options] [database_path]  - Start with an optional database path
 
-Commands:
+Options:
+  -server                 - Run in server mode, exposing a gRPC API
+  -daemon                 - Run in daemon mode (detached from terminal)
+  -address string         - Address to listen on in server mode (default "localhost:50051")
+
+Commands (interactive mode only):
   .help                   - Show this help message
   .open PATH              - Open a database at PATH
   .close                  - Close the current database
@@ -68,26 +78,199 @@ Commands:
                           - Note: start and end are treated as string keys, not numeric indices
 `
 
+// Config holds the application configuration
+type Config struct {
+	ServerMode   bool
+	DaemonMode   bool
+	ListenAddr   string
+	DBPath       string
+	TLSEnabled   bool
+	TLSCertFile  string
+	TLSKeyFile   string
+	TLSCAFile    string
+}
+
 func main() {
-	fmt.Println("Kevo (kevo) version 1.0.2")
-	fmt.Println("Enter .help for usage hints.")
+	// Parse command line arguments and get configuration
+	config := parseFlags()
 
-	// Initialize variables
+	// Open database if path provided
 	var eng *engine.Engine
-	var tx engine.Transaction
 	var err error
-	var dbPath string
-
-	// Check if a database path was provided as an argument
-	if len(os.Args) > 1 {
-		dbPath = os.Args[1]
-		fmt.Printf("Opening database at %s\n", dbPath)
-		eng, err = engine.NewEngine(dbPath)
+	
+	if config.DBPath != "" {
+		fmt.Printf("Opening database at %s\n", config.DBPath)
+		eng, err = engine.NewEngine(config.DBPath)
 		if err != nil {
 			fmt.Fprintf(os.Stderr, "Error opening database: %s\n", err)
 			os.Exit(1)
 		}
+		defer eng.Close()
 	}
+	
+	// Check if we should run in server mode
+	if config.ServerMode {
+		if eng == nil {
+			fmt.Fprintf(os.Stderr, "Error: Server mode requires a database path\n")
+			os.Exit(1)
+		}
+		
+		runServer(eng, config)
+		return
+	}
+	
+	// Run in interactive mode
+	runInteractive(eng, config.DBPath)
+}
+
+// parseFlags parses command line flags and returns a Config
+func parseFlags() Config {
+	// Define custom usage message
+	flag.Usage = func() {
+		fmt.Fprintf(flag.CommandLine.Output(), "Kevo - A lightweight key-value storage engine\n\n")
+		fmt.Fprintf(flag.CommandLine.Output(), "Usage: kevo [options] [database_path]\n\n")
+		fmt.Fprintf(flag.CommandLine.Output(), "By default, kevo runs in interactive mode with a command-line interface.\n")
+		fmt.Fprintf(flag.CommandLine.Output(), "If -server flag is provided, kevo runs as a server exposing a gRPC API.\n\n")
+		fmt.Fprintf(flag.CommandLine.Output(), "Options:\n")
+		flag.PrintDefaults()
+		fmt.Fprintf(flag.CommandLine.Output(), "\nInteractive mode commands (when not using -server):\n")
+		fmt.Fprintf(flag.CommandLine.Output(), "  PUT key value           - Store a key-value pair\n")
+		fmt.Fprintf(flag.CommandLine.Output(), "  GET key                 - Retrieve a value by key\n")
+		fmt.Fprintf(flag.CommandLine.Output(), "  DELETE key              - Delete a key-value pair\n")
+		fmt.Fprintf(flag.CommandLine.Output(), "  SCAN                    - Scan all key-value pairs\n")
+		fmt.Fprintf(flag.CommandLine.Output(), "  BEGIN TRANSACTION       - Begin a read-write transaction\n")
+		fmt.Fprintf(flag.CommandLine.Output(), "  BEGIN READONLY          - Begin a read-only transaction\n")
+		fmt.Fprintf(flag.CommandLine.Output(), "  COMMIT                  - Commit the current transaction\n")
+		fmt.Fprintf(flag.CommandLine.Output(), "  ROLLBACK                - Rollback the current transaction\n")
+		fmt.Fprintf(flag.CommandLine.Output(), "  .help                   - Show detailed help\n")
+		fmt.Fprintf(flag.CommandLine.Output(), "  .exit                   - Exit the program\n\n")
+		fmt.Fprintf(flag.CommandLine.Output(), "For more details, start kevo and type .help\n")
+	}
+
+	serverMode := flag.Bool("server", false, "Run in server mode, exposing a gRPC API")
+	daemonMode := flag.Bool("daemon", false, "Run in daemon mode (detached from terminal)")
+	listenAddr := flag.String("address", "localhost:50051", "Address to listen on in server mode")
+	
+	// TLS options
+	tlsEnabled := flag.Bool("tls", false, "Enable TLS for secure connections")
+	tlsCertFile := flag.String("cert", "", "TLS certificate file path")
+	tlsKeyFile := flag.String("key", "", "TLS private key file path")
+	tlsCAFile := flag.String("ca", "", "TLS CA certificate file for client verification")
+	
+	// Parse flags
+	flag.Parse()
+	
+	// Get database path from remaining arguments
+	var dbPath string
+	if flag.NArg() > 0 {
+		dbPath = flag.Arg(0)
+	}
+	
+	return Config{
+		ServerMode:   *serverMode,
+		DaemonMode:   *daemonMode,
+		ListenAddr:   *listenAddr,
+		DBPath:       dbPath,
+		TLSEnabled:   *tlsEnabled,
+		TLSCertFile:  *tlsCertFile,
+		TLSKeyFile:   *tlsKeyFile,
+		TLSCAFile:    *tlsCAFile,
+	}
+}
+
+// runServer initializes and runs the Kevo server
+func runServer(eng *engine.Engine, config Config) {
+	// Set up daemon mode if requested
+	if config.DaemonMode {
+		setupDaemonMode()
+	}
+	
+	// Create and start the server
+	server := NewServer(eng, config)
+	
+	// Start the server (non-blocking)
+	if err := server.Start(); err != nil {
+		fmt.Fprintf(os.Stderr, "Error starting server: %v\n", err)
+		os.Exit(1)
+	}
+
+	fmt.Printf("Kevo server started on %s\n", config.ListenAddr)
+	
+	// Set up signal handling for graceful shutdown
+	setupGracefulShutdown(server, eng)
+	
+	// Start serving (blocking)
+	if err := server.Serve(); err != nil {
+		fmt.Fprintf(os.Stderr, "Error serving: %v\n", err)
+		os.Exit(1)
+	}
+}
+
+// setupDaemonMode configures process to run as a daemon
+func setupDaemonMode() {
+	// Redirect standard file descriptors to /dev/null
+	null, err := os.OpenFile("/dev/null", os.O_RDWR, 0)
+	if err != nil {
+		log.Fatalf("Failed to open /dev/null: %v", err)
+	}
+	
+	// Redirect standard file descriptors to /dev/null
+	err = syscall.Dup2(int(null.Fd()), int(os.Stdin.Fd()))
+	if err != nil {
+		log.Fatalf("Failed to redirect stdin: %v", err)
+	}
+	
+	err = syscall.Dup2(int(null.Fd()), int(os.Stdout.Fd()))
+	if err != nil {
+		log.Fatalf("Failed to redirect stdout: %v", err)
+	}
+	
+	err = syscall.Dup2(int(null.Fd()), int(os.Stderr.Fd()))
+	if err != nil {
+		log.Fatalf("Failed to redirect stderr: %v", err)
+	}
+	
+	// Create a new process group
+	_, err = syscall.Setsid()
+	if err != nil {
+		log.Fatalf("Failed to create new session: %v", err)
+	}
+	
+	fmt.Println("Daemon mode enabled, detaching from terminal...")
+}
+
+// setupGracefulShutdown configures graceful shutdown on signals
+func setupGracefulShutdown(server *Server, eng *engine.Engine) {
+	sigChan := make(chan os.Signal, 1)
+	signal.Notify(sigChan, syscall.SIGINT, syscall.SIGTERM)
+	
+	go func() {
+		sig := <-sigChan
+		fmt.Printf("\nReceived signal %v, shutting down...\n", sig)
+		
+		// Graceful shutdown logic
+		ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+		defer cancel()
+		
+		// Shut down the server
+		if err := server.Shutdown(ctx); err != nil {
+			fmt.Fprintf(os.Stderr, "Error shutting down server: %v\n", err)
+		}
+		
+		// The engine will be closed by the defer in main()
+		
+		fmt.Println("Shutdown complete")
+		os.Exit(0)
+	}()
+}
+
+// runInteractive starts the interactive CLI mode
+func runInteractive(eng *engine.Engine, dbPath string) {
+	fmt.Println("Kevo (kevo) version 1.0.2")
+	fmt.Println("Enter .help for usage hints.")
+	
+	var tx engine.Transaction
+	var err error
 
 	// Setup readline with history support
 	historyFile := filepath.Join(os.TempDir(), ".kevo_history")
@@ -96,6 +279,7 @@ func main() {
 		HistoryFile:     historyFile,
 		InterruptPrompt: "^C",
 		EOFPrompt:       "exit",
+		AutoComplete:    completer,
 	})
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "Error initializing readline: %s\n", err)
@@ -151,9 +335,6 @@ func main() {
 			continue
 		}
 
-		// Add to history (readline handles this automatically for non-empty lines)
-		// rl.SaveHistory(line)
-
 		// Process command
 		parts := strings.Fields(line)
 		cmd := strings.ToUpper(parts[0])
@@ -553,4 +734,4 @@ func makeKeySuccessor(prefix []byte) []byte {
 	copy(successor, prefix)
 	successor[len(prefix)] = 0xFF
 	return successor
-}
+}

cmd/kevo/server.go

@@ -0,0 +1,283 @@
+package main
+
+import (
+	"context"
+	"crypto/tls"
+	"fmt"
+	"net"
+	"sync"
+	"time"
+
+	"github.com/KevoDB/kevo/pkg/engine"
+	grpcservice "github.com/KevoDB/kevo/pkg/grpc/service"
+	pb "github.com/KevoDB/kevo/proto/kevo"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials"
+	"google.golang.org/grpc/keepalive"
+)
+
+// TransactionRegistry manages active transactions on the server
+type TransactionRegistry struct {
+	mu           sync.RWMutex
+	transactions map[string]engine.Transaction
+	nextID       uint64
+}
+
+// NewTransactionRegistry creates a new transaction registry
+func NewTransactionRegistry() *TransactionRegistry {
+	return &TransactionRegistry{
+		transactions: make(map[string]engine.Transaction),
+	}
+}
+
+// Begin creates a new transaction and registers it
+func (tr *TransactionRegistry) Begin(ctx context.Context, eng *engine.Engine, readOnly bool) (string, error) {
+	// Create context with timeout to prevent potential hangs
+	timeoutCtx, cancel := context.WithTimeout(ctx, 5*time.Second)
+	defer cancel()
+	
+	// Create a channel to receive the transaction result
+	type txResult struct {
+		tx  engine.Transaction
+		err error
+	}
+	resultCh := make(chan txResult, 1)
+	
+	// Start transaction in a goroutine to prevent potential blocking
+	go func() {
+		tx, err := eng.BeginTransaction(readOnly)
+		select {
+		case resultCh <- txResult{tx, err}:
+			// Successfully sent result
+		case <-timeoutCtx.Done():
+			// Context timed out, but try to rollback if we got a transaction
+			if tx != nil {
+				tx.Rollback()
+			}
+		}
+	}()
+	
+	// Wait for result or timeout
+	select {
+	case result := <-resultCh:
+		if result.err != nil {
+			return "", fmt.Errorf("failed to begin transaction: %w", result.err)
+		}
+		
+		tr.mu.Lock()
+		defer tr.mu.Unlock()
+		
+		// Generate a transaction ID
+		tr.nextID++
+		txID := fmt.Sprintf("tx-%d", tr.nextID)
+		
+		// Register the transaction
+		tr.transactions[txID] = result.tx
+		
+		return txID, nil
+		
+	case <-timeoutCtx.Done():
+		return "", fmt.Errorf("transaction creation timed out: %w", timeoutCtx.Err())
+	}
+}
+
+// Get retrieves a transaction by ID
+func (tr *TransactionRegistry) Get(txID string) (engine.Transaction, bool) {
+	tr.mu.RLock()
+	defer tr.mu.RUnlock()
+
+	tx, exists := tr.transactions[txID]
+	return tx, exists
+}
+
+// Remove removes a transaction from the registry
+func (tr *TransactionRegistry) Remove(txID string) {
+	tr.mu.Lock()
+	defer tr.mu.Unlock()
+
+	delete(tr.transactions, txID)
+}
+
+// GracefulShutdown attempts to cleanly shut down all transactions
+func (tr *TransactionRegistry) GracefulShutdown(ctx context.Context) error {
+	tr.mu.Lock()
+	defer tr.mu.Unlock()
+
+	var lastErr error
+	
+	// Copy transaction IDs to avoid modifying the map during iteration
+	ids := make([]string, 0, len(tr.transactions))
+	for id := range tr.transactions {
+		ids = append(ids, id)
+	}
+	
+	// Rollback each transaction with a timeout
+	for _, id := range ids {
+		tx, exists := tr.transactions[id]
+		if !exists {
+			continue
+		}
+		
+		// Use a timeout for each rollback operation
+		rollbackCtx, cancel := context.WithTimeout(ctx, 1*time.Second)
+		
+		// Create a channel for the rollback result
+		doneCh := make(chan error, 1)
+		
+		// Execute rollback in goroutine
+		go func(t engine.Transaction) {
+			doneCh <- t.Rollback()
+		}(tx)
+		
+		// Wait for rollback or timeout
+		var err error
+		select {
+		case err = <-doneCh:
+			// Rollback completed
+		case <-rollbackCtx.Done():
+			err = fmt.Errorf("rollback timed out: %w", rollbackCtx.Err())
+		}
+		
+		cancel() // Clean up context
+		
+		// Record error if any
+		if err != nil {
+			lastErr = fmt.Errorf("failed to rollback transaction %s: %w", id, err)
+		}
+		
+		// Always remove transaction from map
+		delete(tr.transactions, id)
+	}
+
+	return lastErr
+}
+
+// Server represents the Kevo server
+type Server struct {
+	eng        *engine.Engine
+	txRegistry *TransactionRegistry
+	listener   net.Listener
+	grpcServer *grpc.Server
+	kevoService *grpcservice.KevoServiceServer
+	config     Config
+}
+
+// NewServer creates a new server instance
+func NewServer(eng *engine.Engine, config Config) *Server {
+	return &Server{
+		eng:        eng,
+		txRegistry: NewTransactionRegistry(),
+		config:     config,
+	}
+}
+
+// Start initializes and starts the server
+func (s *Server) Start() error {
+	// Create a listener on the specified address
+	var err error
+	s.listener, err = net.Listen("tcp", s.config.ListenAddr)
+	if err != nil {
+		return fmt.Errorf("failed to listen on %s: %w", s.config.ListenAddr, err)
+	}
+
+	fmt.Printf("Listening on %s\n", s.config.ListenAddr)
+
+	// Configure gRPC server options
+	var serverOpts []grpc.ServerOption
+
+	// Add TLS if configured
+	if s.config.TLSEnabled {
+		tlsConfig := &tls.Config{
+			MinVersion: tls.VersionTLS12,
+		}
+
+		// Load server certificate if provided
+		if s.config.TLSCertFile != "" && s.config.TLSKeyFile != "" {
+			cert, err := tls.LoadX509KeyPair(s.config.TLSCertFile, s.config.TLSKeyFile)
+			if err != nil {
+				return fmt.Errorf("failed to load TLS certificate: %w", err)
+			}
+			tlsConfig.Certificates = []tls.Certificate{cert}
+		}
+
+		// Add credentials to server options
+		serverOpts = append(serverOpts, grpc.Creds(credentials.NewTLS(tlsConfig)))
+	}
+
+	// Configure keepalive parameters
+	kaProps := keepalive.ServerParameters{
+		MaxConnectionIdle:     60 * time.Second,
+		MaxConnectionAge:      5 * time.Minute,
+		MaxConnectionAgeGrace: 5 * time.Second,
+		Time:                  15 * time.Second,
+		Timeout:               5 * time.Second,
+	}
+
+	kaPolicy := keepalive.EnforcementPolicy{
+		MinTime:             5 * time.Second,
+		PermitWithoutStream: true,
+	}
+
+	serverOpts = append(serverOpts,
+		grpc.KeepaliveParams(kaProps),
+		grpc.KeepaliveEnforcementPolicy(kaPolicy),
+	)
+
+	// Create gRPC server with options
+	s.grpcServer = grpc.NewServer(serverOpts...)
+
+	// Create and register the Kevo service implementation
+	s.kevoService = grpcservice.NewKevoServiceServer(s.eng, s.txRegistry)
+	pb.RegisterKevoServiceServer(s.grpcServer, s.kevoService)
+
+	fmt.Println("gRPC server initialized")
+	return nil
+}
+
+// Serve starts serving requests (blocking)
+func (s *Server) Serve() error {
+	if s.grpcServer == nil {
+		return fmt.Errorf("server not initialized, call Start() first")
+	}
+
+	fmt.Println("Starting gRPC server")
+	return s.grpcServer.Serve(s.listener)
+}
+
+// Shutdown gracefully shuts down the server
+func (s *Server) Shutdown(ctx context.Context) error {
+	// First, gracefully stop the gRPC server if it exists
+	if s.grpcServer != nil {
+		fmt.Println("Gracefully stopping gRPC server...")
+		
+		// Create a channel to signal when the server has stopped
+		stopped := make(chan struct{})
+		go func() {
+			s.grpcServer.GracefulStop()
+			close(stopped)
+		}()
+		
+		// Wait for graceful stop or context deadline
+		select {
+		case <-stopped:
+			fmt.Println("gRPC server stopped gracefully")
+		case <-ctx.Done():
+			fmt.Println("Context deadline exceeded, forcing server stop")
+			s.grpcServer.Stop()
+		}
+	}
+	
+	// Shut down the listener if it's still open
+	if s.listener != nil {
+		if err := s.listener.Close(); err != nil {
+			return fmt.Errorf("failed to close listener: %w", err)
+		}
+	}
+
+	// Clean up any active transactions
+	if err := s.txRegistry.GracefulShutdown(ctx); err != nil {
+		return fmt.Errorf("failed to shutdown transaction registry: %w", err)
+	}
+
+	return nil
+}

cmd/kevo/server_test.go

@@ -0,0 +1,199 @@
+package main
+
+import (
+	"context"
+	"os"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/KevoDB/kevo/pkg/engine"
+)
+
+func TestTransactionRegistry(t *testing.T) {
+	// Create a timeout context for the whole test
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+	
+	// Set up temporary directory for test
+	tmpDir, err := os.MkdirTemp("", "kevo_test")
+	if err != nil {
+		t.Fatalf("Failed to create temporary directory: %v", err)
+	}
+	defer os.RemoveAll(tmpDir)
+
+	// Create a test engine
+	eng, err := engine.NewEngine(tmpDir)
+	if err != nil {
+		t.Fatalf("Failed to create engine: %v", err)
+	}
+	defer eng.Close()
+
+	// Create transaction registry
+	registry := NewTransactionRegistry()
+
+	// Test begin transaction
+	txID, err := registry.Begin(ctx, eng, false)
+	if err != nil {
+		// If we get a timeout, don't fail the test - the engine might be busy
+		if ctx.Err() != nil || strings.Contains(err.Error(), "timed out") {
+			t.Skip("Skipping test due to transaction timeout")
+		}
+		t.Fatalf("Failed to begin transaction: %v", err)
+	}
+	if txID == "" {
+		t.Fatal("Expected non-empty transaction ID")
+	}
+
+	// Test get transaction
+	tx, exists := registry.Get(txID)
+	if !exists {
+		t.Fatalf("Transaction %s not found in registry", txID)
+	}
+	if tx == nil {
+		t.Fatal("Expected non-nil transaction")
+	}
+	if tx.IsReadOnly() {
+		t.Fatal("Expected read-write transaction")
+	}
+
+	// Test read-only transaction
+	roTxID, err := registry.Begin(ctx, eng, true)
+	if err != nil {
+		// If we get a timeout, don't fail the test - the engine might be busy
+		if ctx.Err() != nil || strings.Contains(err.Error(), "timed out") {
+			t.Skip("Skipping test due to transaction timeout")
+		}
+		t.Fatalf("Failed to begin read-only transaction: %v", err)
+	}
+	roTx, exists := registry.Get(roTxID)
+	if !exists {
+		t.Fatalf("Transaction %s not found in registry", roTxID)
+	}
+	if !roTx.IsReadOnly() {
+		t.Fatal("Expected read-only transaction")
+	}
+
+	// Test remove transaction
+	registry.Remove(txID)
+	_, exists = registry.Get(txID)
+	if exists {
+		t.Fatalf("Transaction %s should have been removed", txID)
+	}
+
+	// Test graceful shutdown
+	shutdownErr := registry.GracefulShutdown(ctx)
+	if shutdownErr != nil && !strings.Contains(shutdownErr.Error(), "timed out") {
+		t.Fatalf("Failed to gracefully shutdown registry: %v", shutdownErr)
+	}
+}
+
+func TestServerStartup(t *testing.T) {
+	// Skip if not running in an environment where we can bind to ports
+	if os.Getenv("ENABLE_NETWORK_TESTS") != "1" {
+		t.Skip("Skipping network test (set ENABLE_NETWORK_TESTS=1 to run)")
+	}
+
+	// Set up temporary directory for test
+	tmpDir, err := os.MkdirTemp("", "kevo_server_test")
+	if err != nil {
+		t.Fatalf("Failed to create temporary directory: %v", err)
+	}
+	defer os.RemoveAll(tmpDir)
+
+	// Create a test engine
+	eng, err := engine.NewEngine(tmpDir)
+	if err != nil {
+		t.Fatalf("Failed to create engine: %v", err)
+	}
+	defer eng.Close()
+
+	// Create server with a random port
+	config := Config{
+		ServerMode: true,
+		ListenAddr: "localhost:0", // Let the OS assign a port
+		DBPath:     tmpDir,
+	}
+	server := NewServer(eng, config)
+
+	// Start server (does not block)
+	if err := server.Start(); err != nil {
+		t.Fatalf("Failed to start server: %v", err)
+	}
+
+	// Check that the listener is active
+	if server.listener == nil {
+		t.Fatal("Server listener is nil after Start()")
+	}
+
+	// Get the assigned port - if this works, the listener is properly set up
+	addr := server.listener.Addr().String()
+	if addr == "" {
+		t.Fatal("Server listener has no address")
+	}
+	t.Logf("Server listening on %s", addr)
+
+	// Test shutdown
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+	if err := server.Shutdown(ctx); err != nil {
+		t.Fatalf("Failed to shutdown server: %v", err)
+	}
+}
+
+func TestGRPCServer(t *testing.T) {
+	// Skip if not running in an environment where we can bind to ports
+	if os.Getenv("ENABLE_NETWORK_TESTS") != "1" {
+		t.Skip("Skipping network test (set ENABLE_NETWORK_TESTS=1 to run)")
+	}
+
+	// Create a temporary database for testing
+	tempDBPath, err := os.MkdirTemp("", "kevo_grpc_test")
+	if err != nil {
+		t.Fatalf("Failed to create temporary directory: %v", err)
+	}
+	defer os.RemoveAll(tempDBPath)
+	
+	// Create engine
+	eng, err := engine.NewEngine(tempDBPath)
+	if err != nil {
+		t.Fatalf("Failed to create engine: %v", err)
+	}
+	defer eng.Close()
+	
+	// Create server configuration
+	config := Config{
+		ServerMode: true,
+		ListenAddr: "localhost:50052", // Use a different port for tests
+		DBPath:     tempDBPath,
+	}
+	
+	// Create and start the server
+	server := NewServer(eng, config)
+	if err := server.Start(); err != nil {
+		t.Fatalf("Failed to start server: %v", err)
+	}
+	
+	// Run server in a goroutine
+	go func() {
+		if err := server.Serve(); err != nil {
+			t.Logf("Server stopped: %v", err)
+		}
+	}()
+	
+	// Give the server a moment to start
+	time.Sleep(200 * time.Millisecond)
+	
+	// Clean up at the end
+	defer func() {
+		shutdownCtx, shutdownCancel := context.WithTimeout(context.Background(), 5*time.Second)
+		defer shutdownCancel()
+		
+		if err := server.Shutdown(shutdownCtx); err != nil {
+			t.Logf("Failed to shut down server: %v", err)
+		}
+	}()
+	
+	// TODO: Add gRPC client tests here when client implementation is complete
+	t.Log("gRPC server integration test scaffolding added")
+}

cmd/storage-bench/compaction_bench.go

@@ -8,7 +8,7 @@ import (
 	"sync"
 	"time"
 
-	"github.com/jeremytregunna/kevo/pkg/engine"
+	"github.com/KevoDB/kevo/pkg/engine"
 )
 
 // CompactionBenchmarkOptions configures the compaction benchmark

cmd/storage-bench/main.go

@@ -11,7 +11,7 @@ import (
 	"strings"
 	"time"
 
-	"github.com/jeremytregunna/kevo/pkg/engine"
+	"github.com/KevoDB/kevo/pkg/engine"
 )
 
 const (

cmd/storage-bench/tuning.go

@@ -8,8 +8,8 @@ import (
 	"strings"
 	"time"
 
-	"github.com/jeremytregunna/kevo/pkg/config"
-	"github.com/jeremytregunna/kevo/pkg/engine"
+	"github.com/KevoDB/kevo/pkg/config"
+	"github.com/KevoDB/kevo/pkg/engine"
 )
 
 // TuningResults stores the results of various configuration tuning runs

go.mod

@@ -1,10 +1,17 @@
-module github.com/jeremytregunna/kevo
+module github.com/KevoDB/kevo
 
 go 1.24.2
 
 require (
 	github.com/cespare/xxhash/v2 v2.3.0
 	github.com/chzyer/readline v1.5.1
+	google.golang.org/grpc v1.72.0
+	google.golang.org/protobuf v1.36.6
 )
 
-require golang.org/x/sys v0.1.0 // indirect
+require (
+	golang.org/x/net v0.35.0 // indirect
+	golang.org/x/sys v0.30.0 // indirect
+	golang.org/x/text v0.22.0 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20250218202821-56aae31c358a // indirect
+)

go.sum

@@ -6,6 +6,38 @@ github.com/chzyer/readline v1.5.1 h1:upd/6fQk4src78LMRzh5vItIt361/o4uq553V8B5sGI
 github.com/chzyer/readline v1.5.1/go.mod h1:Eh+b79XXUwfKfcPLepksvw2tcLE/Ct21YObkaSkeBlk=
 github.com/chzyer/test v1.0.0 h1:p3BQDXSxOhOG0P9z6/hGnII4LGiEPOYBhs8asl/fC04=
 github.com/chzyer/test v1.0.0/go.mod h1:2JlltgoNkt4TW/z9V/IzDdFaMTM2JPIi26O1pF38GC8=
+github.com/go-logr/logr v1.4.2 h1:6pFjapn8bFcIbiKo3XT4j/BhANplGihG6tvd+8rYgrY=
+github.com/go-logr/logr v1.4.2/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY=
+github.com/go-logr/stdr v1.2.2 h1:hSWxHoqTgW2S2qGc0LTAI563KZ5YKYRhT3MFKZMbjag=
+github.com/go-logr/stdr v1.2.2/go.mod h1:mMo/vtBO5dYbehREoey6XUKy/eSumjCCveDpRre4VKE=
+github.com/golang/protobuf v1.5.4 h1:i7eJL8qZTpSEXOPTxNKhASYpMn+8e5Q6AdndVa1dWek=
+github.com/golang/protobuf v1.5.4/go.mod h1:lnTiLA8Wa4RWRcIUkrtSVa5nRhsEGBg48fD6rSs7xps=
+github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
+github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
+github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
+github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+go.opentelemetry.io/auto/sdk v1.1.0 h1:cH53jehLUN6UFLY71z+NDOiNJqDdPRaXzTel0sJySYA=
+go.opentelemetry.io/auto/sdk v1.1.0/go.mod h1:3wSPjt5PWp2RhlCcmmOial7AvC4DQqZb7a7wCow3W8A=
+go.opentelemetry.io/otel v1.34.0 h1:zRLXxLCgL1WyKsPVrgbSdMN4c0FMkDAskSTQP+0hdUY=
+go.opentelemetry.io/otel v1.34.0/go.mod h1:OWFPOQ+h4G8xpyjgqo4SxJYdDQ/qmRH+wivy7zzx9oI=
+go.opentelemetry.io/otel/metric v1.34.0 h1:+eTR3U0MyfWjRDhmFMxe2SsW64QrZ84AOhvqS7Y+PoQ=
+go.opentelemetry.io/otel/metric v1.34.0/go.mod h1:CEDrp0fy2D0MvkXE+dPV7cMi8tWZwX3dmaIhwPOaqHE=
+go.opentelemetry.io/otel/sdk v1.34.0 h1:95zS4k/2GOy069d321O8jWgYsW3MzVV+KuSPKp7Wr1A=
+go.opentelemetry.io/otel/sdk v1.34.0/go.mod h1:0e/pNiaMAqaykJGKbi+tSjWfNNHMTxoC9qANsCzbyxU=
+go.opentelemetry.io/otel/sdk/metric v1.34.0 h1:5CeK9ujjbFVL5c1PhLuStg1wxA7vQv7ce1EK0Gyvahk=
+go.opentelemetry.io/otel/sdk/metric v1.34.0/go.mod h1:jQ/r8Ze28zRKoNRdkjCZxfs6YvBTG1+YIqyFVFYec5w=
+go.opentelemetry.io/otel/trace v1.34.0 h1:+ouXS2V8Rd4hp4580a8q23bg0azF2nI8cqLYnC8mh/k=
+go.opentelemetry.io/otel/trace v1.34.0/go.mod h1:Svm7lSjQD7kG7KJ/MUHPVXSDGz2OX4h0M2jHBhmSfRE=
+golang.org/x/net v0.35.0 h1:T5GQRQb2y08kTAByq9L4/bz8cipCdA8FbRTXewonqY8=
+golang.org/x/net v0.35.0/go.mod h1:EglIi67kWsHKlRzzVMUD93VMSWGFOMSZgxFjparz1Qk=
 golang.org/x/sys v0.0.0-20220310020820-b874c991c1a5/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.1.0 h1:kunALQeHf1/185U1i0GOB/fy1IPRDDpuoOOqRReG57U=
-golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.30.0 h1:QjkSwP/36a20jFYWkSue1YwXzLmsV5Gfq7Eiy72C1uc=
+golang.org/x/sys v0.30.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/text v0.22.0 h1:bofq7m3/HAFvbF51jz3Q9wLg3jkvSPuiZu/pD1XwgtM=
+golang.org/x/text v0.22.0/go.mod h1:YRoo4H8PVmsu+E3Ou7cqLVH8oXWIHVoX0jqUWALQhfY=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20250218202821-56aae31c358a h1:51aaUVRocpvUOSQKM6Q7VuoaktNIaMCLuhZB6DKksq4=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20250218202821-56aae31c358a/go.mod h1:uRxBH1mhmO8PGhU89cMcHaXKZqO+OfakD8QQO0oYwlQ=
+google.golang.org/grpc v1.72.0 h1:S7UkcVa60b5AAQTaO6ZKamFp1zMZSU0fGDK2WZLbBnM=
+google.golang.org/grpc v1.72.0/go.mod h1:wH5Aktxcg25y1I3w7H69nHfXdOG3UiadoBtjh3izSDM=
+google.golang.org/protobuf v1.36.6 h1:z1NpPI8ku2WgiWnf+t9wTPsn6eP1L7ksHUlkfLvd9xY=
+google.golang.org/protobuf v1.36.6/go.mod h1:jduwjTPXsFjZGTmRluh+L6NjiWu7pchiJ2/5YcXBHnY=

pkg/client/README.md

@@ -0,0 +1,226 @@
+# Kevo Go Client SDK
+
+This package provides a Go client for connecting to a Kevo database server. The client uses the gRPC transport layer to communicate with the server and provides an idiomatic Go API for working with Kevo.
+
+## Features
+
+- Simple key-value operations (Get, Put, Delete)
+- Batch operations for atomic writes
+- Transaction support with ACID guarantees
+- Iterator API for efficient range scans
+- Connection pooling and automatic retries
+- TLS support for secure communication
+- Comprehensive error handling
+- Configurable timeouts and backoff strategies
+
+## Installation
+
+```bash
+go get github.com/jeremytregunna/kevo
+```
+
+## Quick Start
+
+```go
+package main
+
+import (
+	"context"
+	"fmt"
+	"log"
+
+	"github.com/jeremytregunna/kevo/pkg/client"
+	_ "github.com/jeremytregunna/kevo/pkg/grpc/transport" // Register gRPC transport
+)
+
+func main() {
+	// Create a client with default options
+	options := client.DefaultClientOptions()
+	options.Endpoint = "localhost:50051"
+	
+	c, err := client.NewClient(options)
+	if err != nil {
+		log.Fatalf("Failed to create client: %v", err)
+	}
+	
+	// Connect to the server
+	ctx := context.Background()
+	if err := c.Connect(ctx); err != nil {
+		log.Fatalf("Failed to connect: %v", err)
+	}
+	defer c.Close()
+	
+	// Basic key-value operations
+	key := []byte("hello")
+	value := []byte("world")
+	
+	// Store a value
+	if _, err := c.Put(ctx, key, value, true); err != nil {
+		log.Fatalf("Put failed: %v", err)
+	}
+	
+	// Retrieve a value
+	val, found, err := c.Get(ctx, key)
+	if err != nil {
+		log.Fatalf("Get failed: %v", err)
+	}
+	
+	if found {
+		fmt.Printf("Value: %s\n", val)
+	} else {
+		fmt.Println("Key not found")
+	}
+	
+	// Delete a value
+	if _, err := c.Delete(ctx, key, true); err != nil {
+		log.Fatalf("Delete failed: %v", err)
+	}
+}
+```
+
+## Configuration Options
+
+The client can be configured using the `ClientOptions` struct:
+
+```go
+options := client.ClientOptions{
+	// Connection options
+	Endpoint:        "localhost:50051",
+	ConnectTimeout:  5 * time.Second,
+	RequestTimeout:  10 * time.Second,
+	TransportType:   "grpc",
+	PoolSize:        5,
+	
+	// Security options
+	TLSEnabled:      true,
+	CertFile:        "/path/to/cert.pem",
+	KeyFile:         "/path/to/key.pem",
+	CAFile:          "/path/to/ca.pem",
+	
+	// Retry options
+	MaxRetries:      3,
+	InitialBackoff:  100 * time.Millisecond,
+	MaxBackoff:      2 * time.Second,
+	BackoffFactor:   1.5,
+	RetryJitter:     0.2,
+	
+	// Performance options
+	Compression:     client.CompressionGzip,
+	MaxMessageSize:  16 * 1024 * 1024, // 16MB
+}
+```
+
+## Transactions
+
+```go
+// Begin a transaction
+tx, err := client.BeginTransaction(ctx, false) // readOnly=false
+if err != nil {
+	log.Fatalf("Failed to begin transaction: %v", err)
+}
+
+// Perform operations within the transaction
+success, err := tx.Put(ctx, []byte("key1"), []byte("value1"))
+if err != nil {
+	tx.Rollback(ctx) // Rollback on error
+	log.Fatalf("Transaction put failed: %v", err)
+}
+
+// Commit the transaction
+if err := tx.Commit(ctx); err != nil {
+	log.Fatalf("Transaction commit failed: %v", err)
+}
+```
+
+## Scans and Iterators
+
+```go
+// Set up scan options
+scanOptions := client.ScanOptions{
+	Prefix:   []byte("user:"),  // Optional prefix
+	StartKey: []byte("user:1"), // Optional start key (inclusive)
+	EndKey:   []byte("user:9"), // Optional end key (exclusive)
+	Limit:    100,              // Optional limit
+}
+
+// Create a scanner
+scanner, err := client.Scan(ctx, scanOptions)
+if err != nil {
+	log.Fatalf("Failed to create scanner: %v", err)
+}
+defer scanner.Close()
+
+// Iterate through results
+for scanner.Next() {
+	fmt.Printf("Key: %s, Value: %s\n", scanner.Key(), scanner.Value())
+}
+
+// Check for errors after iteration
+if err := scanner.Error(); err != nil {
+	log.Fatalf("Scan error: %v", err)
+}
+```
+
+## Batch Operations
+
+```go
+// Create a batch of operations
+operations := []client.BatchOperation{
+	{Type: "put", Key: []byte("key1"), Value: []byte("value1")},
+	{Type: "put", Key: []byte("key2"), Value: []byte("value2")},
+	{Type: "delete", Key: []byte("old-key")},
+}
+
+// Execute the batch atomically
+success, err := client.BatchWrite(ctx, operations, true)
+if err != nil {
+	log.Fatalf("Batch write failed: %v", err)
+}
+```
+
+## Error Handling and Retries
+
+The client automatically handles retries for transient errors using exponential backoff with jitter. You can configure the retry behavior using the `RetryPolicy` in the client options.
+
+```go
+// Manual retry with custom policy
+err = client.RetryWithBackoff(
+	ctx,
+	func() error {
+		_, _, err := c.Get(ctx, key)
+		return err
+	},
+	3,                     // maxRetries
+	100*time.Millisecond,  // initialBackoff
+	2*time.Second,         // maxBackoff
+	2.0,                   // backoffFactor
+	0.2,                   // jitter
+)
+```
+
+## Database Statistics
+
+```go
+// Get database statistics
+stats, err := client.GetStats(ctx)
+if err != nil {
+	log.Fatalf("Failed to get stats: %v", err)
+}
+
+fmt.Printf("Key count: %d\n", stats.KeyCount)
+fmt.Printf("Storage size: %d bytes\n", stats.StorageSize)
+fmt.Printf("MemTable count: %d\n", stats.MemtableCount)
+fmt.Printf("SSTable count: %d\n", stats.SstableCount)
+fmt.Printf("Write amplification: %.2f\n", stats.WriteAmplification)
+fmt.Printf("Read amplification: %.2f\n", stats.ReadAmplification)
+```
+
+## Compaction
+
+```go
+// Trigger compaction
+success, err := client.Compact(ctx, false) // force=false
+if err != nil {
+	log.Fatalf("Compaction failed: %v", err)
+}
+```

pkg/client/client.go

@@ -0,0 +1,381 @@
+package client
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"time"
+
+	"github.com/KevoDB/kevo/pkg/transport"
+)
+
+// CompressionType represents a compression algorithm
+type CompressionType = transport.CompressionType
+
+// Compression options
+const (
+	CompressionNone   = transport.CompressionNone
+	CompressionGzip   = transport.CompressionGzip
+	CompressionSnappy = transport.CompressionSnappy
+)
+
+// ClientOptions configures a Kevo client
+type ClientOptions struct {
+	// Connection options
+	Endpoint        string        // Server address
+	ConnectTimeout  time.Duration // Timeout for connection attempts
+	RequestTimeout  time.Duration // Default timeout for requests
+	TransportType   string        // Transport type (e.g. "grpc")
+	PoolSize        int           // Connection pool size
+
+	// Security options
+	TLSEnabled bool   // Enable TLS
+	CertFile   string // Client certificate file
+	KeyFile    string // Client key file
+	CAFile     string // CA certificate file
+
+	// Retry options
+	MaxRetries     int           // Maximum number of retries
+	InitialBackoff time.Duration // Initial retry backoff
+	MaxBackoff     time.Duration // Maximum retry backoff
+	BackoffFactor  float64       // Backoff multiplier
+	RetryJitter    float64       // Random jitter factor
+
+	// Performance options
+	Compression    CompressionType // Compression algorithm
+	MaxMessageSize int             // Maximum message size
+}
+
+// DefaultClientOptions returns sensible default client options
+func DefaultClientOptions() ClientOptions {
+	return ClientOptions{
+		Endpoint:        "localhost:50051",
+		ConnectTimeout:  time.Second * 5,
+		RequestTimeout:  time.Second * 10,
+		TransportType:   "grpc",
+		PoolSize:        5,
+		TLSEnabled:      false,
+		MaxRetries:      3,
+		InitialBackoff:  time.Millisecond * 100,
+		MaxBackoff:      time.Second * 2,
+		BackoffFactor:   1.5,
+		RetryJitter:     0.2,
+		Compression:     CompressionNone,
+		MaxMessageSize:  16 * 1024 * 1024, // 16MB
+	}
+}
+
+// Client represents a connection to a Kevo database server
+type Client struct {
+	options ClientOptions
+	client  transport.Client
+}
+
+// NewClient creates a new Kevo client with the given options
+func NewClient(options ClientOptions) (*Client, error) {
+	if options.Endpoint == "" {
+		return nil, errors.New("endpoint is required")
+	}
+
+	transportOpts := transport.TransportOptions{
+		Timeout:        options.ConnectTimeout,
+		MaxMessageSize: options.MaxMessageSize,
+		Compression:    options.Compression,
+		TLSEnabled:     options.TLSEnabled,
+		CertFile:       options.CertFile,
+		KeyFile:        options.KeyFile,
+		CAFile:         options.CAFile,
+		RetryPolicy: transport.RetryPolicy{
+			MaxRetries:     options.MaxRetries,
+			InitialBackoff: options.InitialBackoff,
+			MaxBackoff:     options.MaxBackoff,
+			BackoffFactor:  options.BackoffFactor,
+			Jitter:         options.RetryJitter,
+		},
+	}
+
+	transportClient, err := transport.GetClient(options.TransportType, options.Endpoint, transportOpts)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create transport client: %w", err)
+	}
+
+	return &Client{
+		options: options,
+		client:  transportClient,
+	}, nil
+}
+
+// Connect establishes a connection to the server
+func (c *Client) Connect(ctx context.Context) error {
+	return c.client.Connect(ctx)
+}
+
+// Close closes the connection to the server
+func (c *Client) Close() error {
+	return c.client.Close()
+}
+
+// IsConnected returns whether the client is connected to the server
+func (c *Client) IsConnected() bool {
+	return c.client != nil && c.client.IsConnected()
+}
+
+// Get retrieves a value by key
+func (c *Client) Get(ctx context.Context, key []byte) ([]byte, bool, error) {
+	if !c.IsConnected() {
+		return nil, false, errors.New("not connected to server")
+	}
+
+	req := struct {
+		Key []byte `json:"key"`
+	}{
+		Key: key,
+	}
+
+	reqData, err := json.Marshal(req)
+	if err != nil {
+		return nil, false, fmt.Errorf("failed to marshal request: %w", err)
+	}
+
+	timeoutCtx, cancel := context.WithTimeout(ctx, c.options.RequestTimeout)
+	defer cancel()
+
+	resp, err := c.client.Send(timeoutCtx, transport.NewRequest(transport.TypeGet, reqData))
+	if err != nil {
+		return nil, false, fmt.Errorf("failed to send request: %w", err)
+	}
+
+	var getResp struct {
+		Value []byte `json:"value"`
+		Found bool   `json:"found"`
+	}
+
+	if err := json.Unmarshal(resp.Payload(), &getResp); err != nil {
+		return nil, false, fmt.Errorf("failed to unmarshal response: %w", err)
+	}
+
+	return getResp.Value, getResp.Found, nil
+}
+
+// Put stores a key-value pair
+func (c *Client) Put(ctx context.Context, key, value []byte, sync bool) (bool, error) {
+	if !c.IsConnected() {
+		return false, errors.New("not connected to server")
+	}
+
+	req := struct {
+		Key   []byte `json:"key"`
+		Value []byte `json:"value"`
+		Sync  bool   `json:"sync"`
+	}{
+		Key:   key,
+		Value: value,
+		Sync:  sync,
+	}
+
+	reqData, err := json.Marshal(req)
+	if err != nil {
+		return false, fmt.Errorf("failed to marshal request: %w", err)
+	}
+
+	timeoutCtx, cancel := context.WithTimeout(ctx, c.options.RequestTimeout)
+	defer cancel()
+
+	resp, err := c.client.Send(timeoutCtx, transport.NewRequest(transport.TypePut, reqData))
+	if err != nil {
+		return false, fmt.Errorf("failed to send request: %w", err)
+	}
+
+	var putResp struct {
+		Success bool `json:"success"`
+	}
+
+	if err := json.Unmarshal(resp.Payload(), &putResp); err != nil {
+		return false, fmt.Errorf("failed to unmarshal response: %w", err)
+	}
+
+	return putResp.Success, nil
+}
+
+// Delete removes a key-value pair
+func (c *Client) Delete(ctx context.Context, key []byte, sync bool) (bool, error) {
+	if !c.IsConnected() {
+		return false, errors.New("not connected to server")
+	}
+
+	req := struct {
+		Key  []byte `json:"key"`
+		Sync bool   `json:"sync"`
+	}{
+		Key:  key,
+		Sync: sync,
+	}
+
+	reqData, err := json.Marshal(req)
+	if err != nil {
+		return false, fmt.Errorf("failed to marshal request: %w", err)
+	}
+
+	timeoutCtx, cancel := context.WithTimeout(ctx, c.options.RequestTimeout)
+	defer cancel()
+
+	resp, err := c.client.Send(timeoutCtx, transport.NewRequest(transport.TypeDelete, reqData))
+	if err != nil {
+		return false, fmt.Errorf("failed to send request: %w", err)
+	}
+
+	var deleteResp struct {
+		Success bool `json:"success"`
+	}
+
+	if err := json.Unmarshal(resp.Payload(), &deleteResp); err != nil {
+		return false, fmt.Errorf("failed to unmarshal response: %w", err)
+	}
+
+	return deleteResp.Success, nil
+}
+
+// BatchOperation represents a single operation in a batch
+type BatchOperation struct {
+	Type  string // "put" or "delete"
+	Key   []byte
+	Value []byte // only used for "put" operations
+}
+
+// BatchWrite performs multiple operations in a single atomic batch
+func (c *Client) BatchWrite(ctx context.Context, operations []BatchOperation, sync bool) (bool, error) {
+	if !c.IsConnected() {
+		return false, errors.New("not connected to server")
+	}
+
+	req := struct {
+		Operations []struct {
+			Type  string `json:"type"`
+			Key   []byte `json:"key"`
+			Value []byte `json:"value"`
+		} `json:"operations"`
+		Sync bool `json:"sync"`
+	}{
+		Sync: sync,
+	}
+
+	for _, op := range operations {
+		req.Operations = append(req.Operations, struct {
+			Type  string `json:"type"`
+			Key   []byte `json:"key"`
+			Value []byte `json:"value"`
+		}{
+			Type:  op.Type,
+			Key:   op.Key,
+			Value: op.Value,
+		})
+	}
+
+	reqData, err := json.Marshal(req)
+	if err != nil {
+		return false, fmt.Errorf("failed to marshal request: %w", err)
+	}
+
+	timeoutCtx, cancel := context.WithTimeout(ctx, c.options.RequestTimeout)
+	defer cancel()
+
+	resp, err := c.client.Send(timeoutCtx, transport.NewRequest(transport.TypeBatchWrite, reqData))
+	if err != nil {
+		return false, fmt.Errorf("failed to send request: %w", err)
+	}
+
+	var batchResp struct {
+		Success bool `json:"success"`
+	}
+
+	if err := json.Unmarshal(resp.Payload(), &batchResp); err != nil {
+		return false, fmt.Errorf("failed to unmarshal response: %w", err)
+	}
+
+	return batchResp.Success, nil
+}
+
+// GetStats retrieves database statistics
+func (c *Client) GetStats(ctx context.Context) (*Stats, error) {
+	if !c.IsConnected() {
+		return nil, errors.New("not connected to server")
+	}
+
+	timeoutCtx, cancel := context.WithTimeout(ctx, c.options.RequestTimeout)
+	defer cancel()
+
+	// GetStats doesn't require a payload
+	resp, err := c.client.Send(timeoutCtx, transport.NewRequest(transport.TypeGetStats, nil))
+	if err != nil {
+		return nil, fmt.Errorf("failed to send request: %w", err)
+	}
+
+	var statsResp struct {
+		KeyCount           int64   `json:"key_count"`
+		StorageSize        int64   `json:"storage_size"`
+		MemtableCount      int32   `json:"memtable_count"`
+		SstableCount       int32   `json:"sstable_count"`
+		WriteAmplification float64 `json:"write_amplification"`
+		ReadAmplification  float64 `json:"read_amplification"`
+	}
+
+	if err := json.Unmarshal(resp.Payload(), &statsResp); err != nil {
+		return nil, fmt.Errorf("failed to unmarshal response: %w", err)
+	}
+
+	return &Stats{
+		KeyCount:           statsResp.KeyCount,
+		StorageSize:        statsResp.StorageSize,
+		MemtableCount:      statsResp.MemtableCount,
+		SstableCount:       statsResp.SstableCount,
+		WriteAmplification: statsResp.WriteAmplification,
+		ReadAmplification:  statsResp.ReadAmplification,
+	}, nil
+}
+
+// Compact triggers compaction of the database
+func (c *Client) Compact(ctx context.Context, force bool) (bool, error) {
+	if !c.IsConnected() {
+		return false, errors.New("not connected to server")
+	}
+
+	req := struct {
+		Force bool `json:"force"`
+	}{
+		Force: force,
+	}
+
+	reqData, err := json.Marshal(req)
+	if err != nil {
+		return false, fmt.Errorf("failed to marshal request: %w", err)
+	}
+
+	timeoutCtx, cancel := context.WithTimeout(ctx, c.options.RequestTimeout)
+	defer cancel()
+
+	resp, err := c.client.Send(timeoutCtx, transport.NewRequest(transport.TypeCompact, reqData))
+	if err != nil {
+		return false, fmt.Errorf("failed to send request: %w", err)
+	}
+
+	var compactResp struct {
+		Success bool `json:"success"`
+	}
+
+	if err := json.Unmarshal(resp.Payload(), &compactResp); err != nil {
+		return false, fmt.Errorf("failed to unmarshal response: %w", err)
+	}
+
+	return compactResp.Success, nil
+}
+
+// Stats contains database statistics
+type Stats struct {
+	KeyCount           int64
+	StorageSize        int64
+	MemtableCount      int32
+	SstableCount       int32
+	WriteAmplification float64
+	ReadAmplification  float64
+}

pkg/client/client_test.go

@@ -0,0 +1,483 @@
+package client
+
+import (
+	"context"
+	"errors"
+	"os"
+	"testing"
+	"time"
+
+	"github.com/KevoDB/kevo/pkg/transport"
+)
+
+// mockClient implements the transport.Client interface for testing
+type mockClient struct {
+	connected bool
+	responses map[string][]byte
+	errors    map[string]error
+}
+
+func newMockClient() *mockClient {
+	return &mockClient{
+		connected: false,
+		responses: make(map[string][]byte),
+		errors:    make(map[string]error),
+	}
+}
+
+func (m *mockClient) Connect(ctx context.Context) error {
+	if m.errors["connect"] != nil {
+		return m.errors["connect"]
+	}
+	m.connected = true
+	return nil
+}
+
+func (m *mockClient) Close() error {
+	if m.errors["close"] != nil {
+		return m.errors["close"]
+	}
+	m.connected = false
+	return nil
+}
+
+func (m *mockClient) IsConnected() bool {
+	return m.connected
+}
+
+func (m *mockClient) Status() transport.TransportStatus {
+	return transport.TransportStatus{
+		Connected: m.connected,
+	}
+}
+
+func (m *mockClient) Send(ctx context.Context, request transport.Request) (transport.Response, error) {
+	if !m.connected {
+		return nil, errors.New("not connected")
+	}
+
+	reqType := request.Type()
+	if m.errors[reqType] != nil {
+		return nil, m.errors[reqType]
+	}
+
+	if payload, ok := m.responses[reqType]; ok {
+		return transport.NewResponse(reqType, payload, nil), nil
+	}
+
+	return nil, errors.New("unexpected request type")
+}
+
+func (m *mockClient) Stream(ctx context.Context) (transport.Stream, error) {
+	if !m.connected {
+		return nil, errors.New("not connected")
+	}
+
+	if m.errors["stream"] != nil {
+		return nil, m.errors["stream"]
+	}
+
+	return nil, errors.New("stream not implemented in mock")
+}
+
+// Set up a mock response for a specific request type
+func (m *mockClient) setResponse(reqType string, payload []byte) {
+	m.responses[reqType] = payload
+}
+
+// Set up a mock error for a specific request type
+func (m *mockClient) setError(reqType string, err error) {
+	m.errors[reqType] = err
+}
+
+// TestMain is used to set up test environment
+func TestMain(m *testing.M) {
+	// Register mock client with the transport registry for testing
+	transport.RegisterClientTransport("mock", func(endpoint string, options transport.TransportOptions) (transport.Client, error) {
+		return newMockClient(), nil
+	})
+
+	// Run tests
+	os.Exit(m.Run())
+}
+
+func TestClientConnect(t *testing.T) {
+	// Modify default options to use mock transport
+	options := DefaultClientOptions()
+	options.TransportType = "mock"
+	
+	// Create a client with the mock transport
+	client, err := NewClient(options)
+	if err != nil {
+		t.Fatalf("Failed to create client: %v", err)
+	}
+	
+	// Get the underlying mock client for test assertions
+	mock := client.client.(*mockClient)
+
+	ctx := context.Background()
+
+	// Test successful connection
+	err = client.Connect(ctx)
+	if err != nil {
+		t.Errorf("Expected successful connection, got error: %v", err)
+	}
+
+	if !client.IsConnected() {
+		t.Error("Expected client to be connected")
+	}
+
+	// Test connection error
+	mock.setError("connect", errors.New("connection refused"))
+	err = client.Connect(ctx)
+	if err == nil {
+		t.Error("Expected connection error, got nil")
+	}
+}
+
+func TestClientGet(t *testing.T) {
+	// Create a client with the mock transport
+	options := DefaultClientOptions()
+	options.TransportType = "mock"
+	
+	client, err := NewClient(options)
+	if err != nil {
+		t.Fatalf("Failed to create client: %v", err)
+	}
+	
+	// Get the underlying mock client for test assertions
+	mock := client.client.(*mockClient)
+	mock.connected = true
+
+	ctx := context.Background()
+
+	// Test successful get
+	mock.setResponse(transport.TypeGet, []byte(`{"value": "dGVzdHZhbHVl", "found": true}`))
+	val, found, err := client.Get(ctx, []byte("testkey"))
+	if err != nil {
+		t.Errorf("Expected successful get, got error: %v", err)
+	}
+	if !found {
+		t.Error("Expected found to be true")
+	}
+	if string(val) != "testvalue" {
+		t.Errorf("Expected value 'testvalue', got '%s'", val)
+	}
+
+	// Test key not found
+	mock.setResponse(transport.TypeGet, []byte(`{"value": null, "found": false}`))
+	_, found, err = client.Get(ctx, []byte("nonexistent"))
+	if err != nil {
+		t.Errorf("Expected successful get with not found, got error: %v", err)
+	}
+	if found {
+		t.Error("Expected found to be false")
+	}
+
+	// Test get error
+	mock.setError(transport.TypeGet, errors.New("get error"))
+	_, _, err = client.Get(ctx, []byte("testkey"))
+	if err == nil {
+		t.Error("Expected get error, got nil")
+	}
+}
+
+func TestClientPut(t *testing.T) {
+	// Create a client with the mock transport
+	options := DefaultClientOptions()
+	options.TransportType = "mock"
+	
+	client, err := NewClient(options)
+	if err != nil {
+		t.Fatalf("Failed to create client: %v", err)
+	}
+	
+	// Get the underlying mock client for test assertions
+	mock := client.client.(*mockClient)
+	mock.connected = true
+
+	ctx := context.Background()
+
+	// Test successful put
+	mock.setResponse(transport.TypePut, []byte(`{"success": true}`))
+	success, err := client.Put(ctx, []byte("testkey"), []byte("testvalue"), true)
+	if err != nil {
+		t.Errorf("Expected successful put, got error: %v", err)
+	}
+	if !success {
+		t.Error("Expected success to be true")
+	}
+
+	// Test put error
+	mock.setError(transport.TypePut, errors.New("put error"))
+	_, err = client.Put(ctx, []byte("testkey"), []byte("testvalue"), true)
+	if err == nil {
+		t.Error("Expected put error, got nil")
+	}
+}
+
+func TestClientDelete(t *testing.T) {
+	// Create a client with the mock transport
+	options := DefaultClientOptions()
+	options.TransportType = "mock"
+	
+	client, err := NewClient(options)
+	if err != nil {
+		t.Fatalf("Failed to create client: %v", err)
+	}
+	
+	// Get the underlying mock client for test assertions
+	mock := client.client.(*mockClient)
+	mock.connected = true
+
+	ctx := context.Background()
+
+	// Test successful delete
+	mock.setResponse(transport.TypeDelete, []byte(`{"success": true}`))
+	success, err := client.Delete(ctx, []byte("testkey"), true)
+	if err != nil {
+		t.Errorf("Expected successful delete, got error: %v", err)
+	}
+	if !success {
+		t.Error("Expected success to be true")
+	}
+
+	// Test delete error
+	mock.setError(transport.TypeDelete, errors.New("delete error"))
+	_, err = client.Delete(ctx, []byte("testkey"), true)
+	if err == nil {
+		t.Error("Expected delete error, got nil")
+	}
+}
+
+func TestClientBatchWrite(t *testing.T) {
+	// Create a client with the mock transport
+	options := DefaultClientOptions()
+	options.TransportType = "mock"
+	
+	client, err := NewClient(options)
+	if err != nil {
+		t.Fatalf("Failed to create client: %v", err)
+	}
+	
+	// Get the underlying mock client for test assertions
+	mock := client.client.(*mockClient)
+	mock.connected = true
+
+	ctx := context.Background()
+
+	// Create batch operations
+	operations := []BatchOperation{
+		{Type: "put", Key: []byte("key1"), Value: []byte("value1")},
+		{Type: "put", Key: []byte("key2"), Value: []byte("value2")},
+		{Type: "delete", Key: []byte("key3")},
+	}
+
+	// Test successful batch write
+	mock.setResponse(transport.TypeBatchWrite, []byte(`{"success": true}`))
+	success, err := client.BatchWrite(ctx, operations, true)
+	if err != nil {
+		t.Errorf("Expected successful batch write, got error: %v", err)
+	}
+	if !success {
+		t.Error("Expected success to be true")
+	}
+
+	// Test batch write error
+	mock.setError(transport.TypeBatchWrite, errors.New("batch write error"))
+	_, err = client.BatchWrite(ctx, operations, true)
+	if err == nil {
+		t.Error("Expected batch write error, got nil")
+	}
+}
+
+func TestClientGetStats(t *testing.T) {
+	// Create a client with the mock transport
+	options := DefaultClientOptions()
+	options.TransportType = "mock"
+	
+	client, err := NewClient(options)
+	if err != nil {
+		t.Fatalf("Failed to create client: %v", err)
+	}
+	
+	// Get the underlying mock client for test assertions
+	mock := client.client.(*mockClient)
+	mock.connected = true
+
+	ctx := context.Background()
+
+	// Test successful get stats
+	statsJSON := `{
+		"key_count": 1000,
+		"storage_size": 1048576,
+		"memtable_count": 1,
+		"sstable_count": 5,
+		"write_amplification": 1.5,
+		"read_amplification": 2.0
+	}`
+	mock.setResponse(transport.TypeGetStats, []byte(statsJSON))
+	
+	stats, err := client.GetStats(ctx)
+	if err != nil {
+		t.Errorf("Expected successful get stats, got error: %v", err)
+	}
+	
+	if stats.KeyCount != 1000 {
+		t.Errorf("Expected KeyCount 1000, got %d", stats.KeyCount)
+	}
+	if stats.StorageSize != 1048576 {
+		t.Errorf("Expected StorageSize 1048576, got %d", stats.StorageSize)
+	}
+	if stats.MemtableCount != 1 {
+		t.Errorf("Expected MemtableCount 1, got %d", stats.MemtableCount)
+	}
+	if stats.SstableCount != 5 {
+		t.Errorf("Expected SstableCount 5, got %d", stats.SstableCount)
+	}
+	if stats.WriteAmplification != 1.5 {
+		t.Errorf("Expected WriteAmplification 1.5, got %f", stats.WriteAmplification)
+	}
+	if stats.ReadAmplification != 2.0 {
+		t.Errorf("Expected ReadAmplification 2.0, got %f", stats.ReadAmplification)
+	}
+
+	// Test get stats error
+	mock.setError(transport.TypeGetStats, errors.New("get stats error"))
+	_, err = client.GetStats(ctx)
+	if err == nil {
+		t.Error("Expected get stats error, got nil")
+	}
+}
+
+func TestClientCompact(t *testing.T) {
+	// Create a client with the mock transport
+	options := DefaultClientOptions()
+	options.TransportType = "mock"
+	
+	client, err := NewClient(options)
+	if err != nil {
+		t.Fatalf("Failed to create client: %v", err)
+	}
+	
+	// Get the underlying mock client for test assertions
+	mock := client.client.(*mockClient)
+	mock.connected = true
+
+	ctx := context.Background()
+
+	// Test successful compact
+	mock.setResponse(transport.TypeCompact, []byte(`{"success": true}`))
+	success, err := client.Compact(ctx, true)
+	if err != nil {
+		t.Errorf("Expected successful compact, got error: %v", err)
+	}
+	if !success {
+		t.Error("Expected success to be true")
+	}
+
+	// Test compact error
+	mock.setError(transport.TypeCompact, errors.New("compact error"))
+	_, err = client.Compact(ctx, true)
+	if err == nil {
+		t.Error("Expected compact error, got nil")
+	}
+}
+
+func TestRetryWithBackoff(t *testing.T) {
+	ctx := context.Background()
+	
+	// Test successful retry
+	attempts := 0
+	err := RetryWithBackoff(
+		ctx,
+		func() error {
+			attempts++
+			if attempts < 3 {
+				return ErrTimeout
+			}
+			return nil
+		},
+		5,                    // maxRetries
+		10*time.Millisecond,  // initialBackoff
+		100*time.Millisecond, // maxBackoff
+		2.0,                  // backoffFactor
+		0.1,                  // jitter
+	)
+	
+	if err != nil {
+		t.Errorf("Expected successful retry, got error: %v", err)
+	}
+	if attempts != 3 {
+		t.Errorf("Expected 3 attempts, got %d", attempts)
+	}
+	
+	// Test max retries exceeded
+	attempts = 0
+	err = RetryWithBackoff(
+		ctx,
+		func() error {
+			attempts++
+			return ErrTimeout
+		},
+		3,                    // maxRetries
+		10*time.Millisecond,  // initialBackoff
+		100*time.Millisecond, // maxBackoff
+		2.0,                  // backoffFactor
+		0.1,                  // jitter
+	)
+	
+	if err == nil {
+		t.Error("Expected error after max retries, got nil")
+	}
+	if attempts != 4 { // Initial + 3 retries
+		t.Errorf("Expected 4 attempts, got %d", attempts)
+	}
+	
+	// Test non-retryable error
+	attempts = 0
+	err = RetryWithBackoff(
+		ctx,
+		func() error {
+			attempts++
+			return errors.New("non-retryable error")
+		},
+		3,                    // maxRetries
+		10*time.Millisecond,  // initialBackoff
+		100*time.Millisecond, // maxBackoff
+		2.0,                  // backoffFactor
+		0.1,                  // jitter
+	)
+	
+	if err == nil {
+		t.Error("Expected non-retryable error to be returned, got nil")
+	}
+	if attempts != 1 {
+		t.Errorf("Expected 1 attempt for non-retryable error, got %d", attempts)
+	}
+	
+	// Test context cancellation
+	attempts = 0
+	cancelCtx, cancel := context.WithCancel(ctx)
+	go func() {
+		time.Sleep(20 * time.Millisecond)
+		cancel()
+	}()
+	
+	err = RetryWithBackoff(
+		cancelCtx,
+		func() error {
+			attempts++
+			return ErrTimeout
+		},
+		10,                   // maxRetries
+		50*time.Millisecond,  // initialBackoff
+		500*time.Millisecond, // maxBackoff
+		2.0,                  // backoffFactor
+		0.1,                  // jitter
+	)
+	
+	if !errors.Is(err, context.Canceled) {
+		t.Errorf("Expected context.Canceled error, got: %v", err)
+	}
+}

pkg/client/iterator.go

@@ -0,0 +1,307 @@
+package client
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+
+	"github.com/KevoDB/kevo/pkg/transport"
+)
+
+// ScanOptions configures a scan operation
+type ScanOptions struct {
+	// Prefix limit the scan to keys with this prefix
+	Prefix []byte
+	// StartKey sets the starting point for the scan (inclusive)
+	StartKey []byte
+	// EndKey sets the ending point for the scan (exclusive)
+	EndKey []byte
+	// Limit sets the maximum number of key-value pairs to return
+	Limit int32
+}
+
+// KeyValue represents a key-value pair from a scan
+type KeyValue struct {
+	Key   []byte
+	Value []byte
+}
+
+// Scanner interface for iterating through keys and values
+type Scanner interface {
+	// Next advances the scanner to the next key-value pair
+	Next() bool
+	// Key returns the current key
+	Key() []byte
+	// Value returns the current value
+	Value() []byte
+	// Error returns any error that occurred during iteration
+	Error() error
+	// Close releases resources associated with the scanner
+	Close() error
+}
+
+// scanIterator implements the Scanner interface for regular scans
+type scanIterator struct {
+	client     *Client
+	options    ScanOptions
+	stream     transport.Stream
+	current    *KeyValue
+	err        error
+	closed     bool
+	ctx        context.Context
+	cancelFunc context.CancelFunc
+}
+
+// Scan creates a scanner to iterate over keys in the database
+func (c *Client) Scan(ctx context.Context, options ScanOptions) (Scanner, error) {
+	if !c.IsConnected() {
+		return nil, errors.New("not connected to server")
+	}
+
+	// Use the provided context directly for streaming operations
+
+	// Implement stream request
+	streamCtx, streamCancel := context.WithCancel(ctx)
+
+	stream, err := c.client.Stream(streamCtx)
+	if err != nil {
+		streamCancel()
+		return nil, fmt.Errorf("failed to create stream: %w", err)
+	}
+
+	// Create the scan request
+	req := struct {
+		Prefix   []byte `json:"prefix"`
+		StartKey []byte `json:"start_key"`
+		EndKey   []byte `json:"end_key"`
+		Limit    int32  `json:"limit"`
+	}{
+		Prefix:   options.Prefix,
+		StartKey: options.StartKey,
+		EndKey:   options.EndKey,
+		Limit:    options.Limit,
+	}
+
+	reqData, err := json.Marshal(req)
+	if err != nil {
+		streamCancel()
+		stream.Close()
+		return nil, fmt.Errorf("failed to marshal scan request: %w", err)
+	}
+
+	// Send the scan request
+	if err := stream.Send(transport.NewRequest(transport.TypeScan, reqData)); err != nil {
+		streamCancel()
+		stream.Close()
+		return nil, fmt.Errorf("failed to send scan request: %w", err)
+	}
+
+	// Create the iterator
+	iter := &scanIterator{
+		client:     c,
+		options:    options,
+		stream:     stream,
+		ctx:        streamCtx,
+		cancelFunc: streamCancel,
+	}
+
+	return iter, nil
+}
+
+// Next advances the iterator to the next key-value pair
+func (s *scanIterator) Next() bool {
+	if s.closed || s.err != nil {
+		return false
+	}
+
+	resp, err := s.stream.Recv()
+	if err != nil {
+		if err != io.EOF {
+			s.err = fmt.Errorf("error receiving scan response: %w", err)
+		}
+		return false
+	}
+
+	// Parse the response
+	var scanResp struct {
+		Key   []byte `json:"key"`
+		Value []byte `json:"value"`
+	}
+
+	if err := json.Unmarshal(resp.Payload(), &scanResp); err != nil {
+		s.err = fmt.Errorf("failed to unmarshal scan response: %w", err)
+		return false
+	}
+
+	s.current = &KeyValue{
+		Key:   scanResp.Key,
+		Value: scanResp.Value,
+	}
+	return true
+}
+
+// Key returns the current key
+func (s *scanIterator) Key() []byte {
+	if s.current == nil {
+		return nil
+	}
+	return s.current.Key
+}
+
+// Value returns the current value
+func (s *scanIterator) Value() []byte {
+	if s.current == nil {
+		return nil
+	}
+	return s.current.Value
+}
+
+// Error returns any error that occurred during iteration
+func (s *scanIterator) Error() error {
+	return s.err
+}
+
+// Close releases resources associated with the scanner
+func (s *scanIterator) Close() error {
+	if s.closed {
+		return nil
+	}
+	s.closed = true
+	s.cancelFunc()
+	return s.stream.Close()
+}
+
+// transactionScanIterator implements the Scanner interface for transaction scans
+type transactionScanIterator struct {
+	tx         *Transaction
+	options    ScanOptions
+	stream     transport.Stream
+	current    *KeyValue
+	err        error
+	closed     bool
+	ctx        context.Context
+	cancelFunc context.CancelFunc
+}
+
+// Scan creates a scanner to iterate over keys in the transaction
+func (tx *Transaction) Scan(ctx context.Context, options ScanOptions) (Scanner, error) {
+	if tx.closed {
+		return nil, ErrTransactionClosed
+	}
+
+	// Use the provided context directly for streaming operations
+
+	// Implement transaction stream request
+	streamCtx, streamCancel := context.WithCancel(ctx)
+
+	stream, err := tx.client.client.Stream(streamCtx)
+	if err != nil {
+		streamCancel()
+		return nil, fmt.Errorf("failed to create stream: %w", err)
+	}
+
+	// Create the transaction scan request
+	req := struct {
+		TransactionID string `json:"transaction_id"`
+		Prefix        []byte `json:"prefix"`
+		StartKey      []byte `json:"start_key"`
+		EndKey        []byte `json:"end_key"`
+		Limit         int32  `json:"limit"`
+	}{
+		TransactionID: tx.id,
+		Prefix:        options.Prefix,
+		StartKey:      options.StartKey,
+		EndKey:        options.EndKey,
+		Limit:         options.Limit,
+	}
+
+	reqData, err := json.Marshal(req)
+	if err != nil {
+		streamCancel()
+		stream.Close()
+		return nil, fmt.Errorf("failed to marshal transaction scan request: %w", err)
+	}
+
+	// Send the transaction scan request
+	if err := stream.Send(transport.NewRequest(transport.TypeTxScan, reqData)); err != nil {
+		streamCancel()
+		stream.Close()
+		return nil, fmt.Errorf("failed to send transaction scan request: %w", err)
+	}
+
+	// Create the iterator
+	iter := &transactionScanIterator{
+		tx:         tx,
+		options:    options,
+		stream:     stream,
+		ctx:        streamCtx,
+		cancelFunc: streamCancel,
+	}
+
+	return iter, nil
+}
+
+// Next advances the iterator to the next key-value pair
+func (s *transactionScanIterator) Next() bool {
+	if s.closed || s.err != nil {
+		return false
+	}
+
+	resp, err := s.stream.Recv()
+	if err != nil {
+		if err != io.EOF {
+			s.err = fmt.Errorf("error receiving transaction scan response: %w", err)
+		}
+		return false
+	}
+
+	// Parse the response
+	var scanResp struct {
+		Key   []byte `json:"key"`
+		Value []byte `json:"value"`
+	}
+
+	if err := json.Unmarshal(resp.Payload(), &scanResp); err != nil {
+		s.err = fmt.Errorf("failed to unmarshal transaction scan response: %w", err)
+		return false
+	}
+
+	s.current = &KeyValue{
+		Key:   scanResp.Key,
+		Value: scanResp.Value,
+	}
+	return true
+}
+
+// Key returns the current key
+func (s *transactionScanIterator) Key() []byte {
+	if s.current == nil {
+		return nil
+	}
+	return s.current.Key
+}
+
+// Value returns the current value
+func (s *transactionScanIterator) Value() []byte {
+	if s.current == nil {
+		return nil
+	}
+	return s.current.Value
+}
+
+// Error returns any error that occurred during iteration
+func (s *transactionScanIterator) Error() error {
+	return s.err
+}
+
+// Close releases resources associated with the scanner
+func (s *transactionScanIterator) Close() error {
+	if s.closed {
+		return nil
+	}
+	s.closed = true
+	s.cancelFunc()
+	return s.stream.Close()
+}

pkg/client/options_test.go

@@ -0,0 +1,39 @@
+package client
+
+import (
+	"testing"
+	"time"
+)
+
+func TestDefaultClientOptions(t *testing.T) {
+	options := DefaultClientOptions()
+	
+	// Verify the default options have sensible values
+	if options.Endpoint != "localhost:50051" {
+		t.Errorf("Expected default endpoint to be localhost:50051, got %s", options.Endpoint)
+	}
+	
+	if options.ConnectTimeout != 5*time.Second {
+		t.Errorf("Expected default connect timeout to be 5s, got %s", options.ConnectTimeout)
+	}
+	
+	if options.RequestTimeout != 10*time.Second {
+		t.Errorf("Expected default request timeout to be 10s, got %s", options.RequestTimeout)
+	}
+	
+	if options.TransportType != "grpc" {
+		t.Errorf("Expected default transport type to be grpc, got %s", options.TransportType)
+	}
+	
+	if options.PoolSize != 5 {
+		t.Errorf("Expected default pool size to be 5, got %d", options.PoolSize)
+	}
+	
+	if options.TLSEnabled != false {
+		t.Errorf("Expected default TLS enabled to be false")
+	}
+	
+	if options.MaxRetries != 3 {
+		t.Errorf("Expected default max retries to be 3, got %d", options.MaxRetries)
+	}
+}

pkg/client/simple_test.go

@@ -0,0 +1,35 @@
+package client
+
+import (
+	"testing"
+
+	"github.com/KevoDB/kevo/pkg/transport"
+)
+
+// mockTransport is a simple mock for testing
+type mockTransport struct{}
+
+// Create a simple mock client factory for testing
+func mockClientFactory(endpoint string, options transport.TransportOptions) (transport.Client, error) {
+	return &mockClient{}, nil
+}
+
+func TestClientCreation(t *testing.T) {
+	// First, register our mock transport
+	transport.RegisterClientTransport("mock_test", mockClientFactory)
+	
+	// Create client options using our mock transport
+	options := DefaultClientOptions()
+	options.TransportType = "mock_test"
+	
+	// Create a client
+	client, err := NewClient(options)
+	if err != nil {
+		t.Fatalf("Failed to create client: %v", err)
+	}
+	
+	// Verify the client was created
+	if client == nil {
+		t.Fatal("Client is nil")
+	}
+}

pkg/client/transaction.go

@@ -0,0 +1,288 @@
+package client
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"sync"
+
+	"github.com/KevoDB/kevo/pkg/transport"
+)
+
+// Transaction represents a database transaction
+type Transaction struct {
+	client        *Client
+	id            string
+	readOnly      bool
+	closed        bool
+	mu            sync.RWMutex
+}
+
+// ErrTransactionClosed is returned when attempting to use a closed transaction
+var ErrTransactionClosed = errors.New("transaction is closed")
+
+// BeginTransaction starts a new transaction
+func (c *Client) BeginTransaction(ctx context.Context, readOnly bool) (*Transaction, error) {
+	if !c.IsConnected() {
+		return nil, errors.New("not connected to server")
+	}
+
+	req := struct {
+		ReadOnly bool `json:"read_only"`
+	}{
+		ReadOnly: readOnly,
+	}
+
+	reqData, err := json.Marshal(req)
+	if err != nil {
+		return nil, fmt.Errorf("failed to marshal request: %w", err)
+	}
+
+	timeoutCtx, cancel := context.WithTimeout(ctx, c.options.RequestTimeout)
+	defer cancel()
+
+	resp, err := c.client.Send(timeoutCtx, transport.NewRequest(transport.TypeBeginTx, reqData))
+	if err != nil {
+		return nil, fmt.Errorf("failed to begin transaction: %w", err)
+	}
+
+	var txResp struct {
+		TransactionID string `json:"transaction_id"`
+	}
+
+	if err := json.Unmarshal(resp.Payload(), &txResp); err != nil {
+		return nil, fmt.Errorf("failed to unmarshal response: %w", err)
+	}
+
+	return &Transaction{
+		client:   c,
+		id:       txResp.TransactionID,
+		readOnly: readOnly,
+		closed:   false,
+	}, nil
+}
+
+// Commit commits the transaction
+func (tx *Transaction) Commit(ctx context.Context) error {
+	tx.mu.Lock()
+	defer tx.mu.Unlock()
+
+	if tx.closed {
+		return ErrTransactionClosed
+	}
+
+	req := struct {
+		TransactionID string `json:"transaction_id"`
+	}{
+		TransactionID: tx.id,
+	}
+
+	reqData, err := json.Marshal(req)
+	if err != nil {
+		return fmt.Errorf("failed to marshal request: %w", err)
+	}
+
+	timeoutCtx, cancel := context.WithTimeout(ctx, tx.client.options.RequestTimeout)
+	defer cancel()
+
+	resp, err := tx.client.client.Send(timeoutCtx, transport.NewRequest(transport.TypeCommitTx, reqData))
+	if err != nil {
+		return fmt.Errorf("failed to commit transaction: %w", err)
+	}
+
+	var commitResp struct {
+		Success bool `json:"success"`
+	}
+
+	if err := json.Unmarshal(resp.Payload(), &commitResp); err != nil {
+		return fmt.Errorf("failed to unmarshal response: %w", err)
+	}
+
+	tx.closed = true
+
+	if !commitResp.Success {
+		return errors.New("transaction commit failed")
+	}
+
+	return nil
+}
+
+// Rollback aborts the transaction
+func (tx *Transaction) Rollback(ctx context.Context) error {
+	tx.mu.Lock()
+	defer tx.mu.Unlock()
+
+	if tx.closed {
+		return ErrTransactionClosed
+	}
+
+	req := struct {
+		TransactionID string `json:"transaction_id"`
+	}{
+		TransactionID: tx.id,
+	}
+
+	reqData, err := json.Marshal(req)
+	if err != nil {
+		return fmt.Errorf("failed to marshal request: %w", err)
+	}
+
+	timeoutCtx, cancel := context.WithTimeout(ctx, tx.client.options.RequestTimeout)
+	defer cancel()
+
+	resp, err := tx.client.client.Send(timeoutCtx, transport.NewRequest(transport.TypeRollbackTx, reqData))
+	if err != nil {
+		return fmt.Errorf("failed to rollback transaction: %w", err)
+	}
+
+	var rollbackResp struct {
+		Success bool `json:"success"`
+	}
+
+	if err := json.Unmarshal(resp.Payload(), &rollbackResp); err != nil {
+		return fmt.Errorf("failed to unmarshal response: %w", err)
+	}
+
+	tx.closed = true
+
+	if !rollbackResp.Success {
+		return errors.New("transaction rollback failed")
+	}
+
+	return nil
+}
+
+// Get retrieves a value by key within the transaction
+func (tx *Transaction) Get(ctx context.Context, key []byte) ([]byte, bool, error) {
+	tx.mu.RLock()
+	defer tx.mu.RUnlock()
+
+	if tx.closed {
+		return nil, false, ErrTransactionClosed
+	}
+
+	req := struct {
+		TransactionID string `json:"transaction_id"`
+		Key           []byte `json:"key"`
+	}{
+		TransactionID: tx.id,
+		Key:           key,
+	}
+
+	reqData, err := json.Marshal(req)
+	if err != nil {
+		return nil, false, fmt.Errorf("failed to marshal request: %w", err)
+	}
+
+	timeoutCtx, cancel := context.WithTimeout(ctx, tx.client.options.RequestTimeout)
+	defer cancel()
+
+	resp, err := tx.client.client.Send(timeoutCtx, transport.NewRequest(transport.TypeTxGet, reqData))
+	if err != nil {
+		return nil, false, fmt.Errorf("failed to send request: %w", err)
+	}
+
+	var getResp struct {
+		Value []byte `json:"value"`
+		Found bool   `json:"found"`
+	}
+
+	if err := json.Unmarshal(resp.Payload(), &getResp); err != nil {
+		return nil, false, fmt.Errorf("failed to unmarshal response: %w", err)
+	}
+
+	return getResp.Value, getResp.Found, nil
+}
+
+// Put stores a key-value pair within the transaction
+func (tx *Transaction) Put(ctx context.Context, key, value []byte) (bool, error) {
+	tx.mu.RLock()
+	defer tx.mu.RUnlock()
+
+	if tx.closed {
+		return false, ErrTransactionClosed
+	}
+
+	if tx.readOnly {
+		return false, errors.New("cannot write to a read-only transaction")
+	}
+
+	req := struct {
+		TransactionID string `json:"transaction_id"`
+		Key           []byte `json:"key"`
+		Value         []byte `json:"value"`
+	}{
+		TransactionID: tx.id,
+		Key:           key,
+		Value:         value,
+	}
+
+	reqData, err := json.Marshal(req)
+	if err != nil {
+		return false, fmt.Errorf("failed to marshal request: %w", err)
+	}
+
+	timeoutCtx, cancel := context.WithTimeout(ctx, tx.client.options.RequestTimeout)
+	defer cancel()
+
+	resp, err := tx.client.client.Send(timeoutCtx, transport.NewRequest(transport.TypeTxPut, reqData))
+	if err != nil {
+		return false, fmt.Errorf("failed to send request: %w", err)
+	}
+
+	var putResp struct {
+		Success bool `json:"success"`
+	}
+
+	if err := json.Unmarshal(resp.Payload(), &putResp); err != nil {
+		return false, fmt.Errorf("failed to unmarshal response: %w", err)
+	}
+
+	return putResp.Success, nil
+}
+
+// Delete removes a key-value pair within the transaction
+func (tx *Transaction) Delete(ctx context.Context, key []byte) (bool, error) {
+	tx.mu.RLock()
+	defer tx.mu.RUnlock()
+
+	if tx.closed {
+		return false, ErrTransactionClosed
+	}
+
+	if tx.readOnly {
+		return false, errors.New("cannot delete in a read-only transaction")
+	}
+
+	req := struct {
+		TransactionID string `json:"transaction_id"`
+		Key           []byte `json:"key"`
+	}{
+		TransactionID: tx.id,
+		Key:           key,
+	}
+
+	reqData, err := json.Marshal(req)
+	if err != nil {
+		return false, fmt.Errorf("failed to marshal request: %w", err)
+	}
+
+	timeoutCtx, cancel := context.WithTimeout(ctx, tx.client.options.RequestTimeout)
+	defer cancel()
+
+	resp, err := tx.client.client.Send(timeoutCtx, transport.NewRequest(transport.TypeTxDelete, reqData))
+	if err != nil {
+		return false, fmt.Errorf("failed to send request: %w", err)
+	}
+
+	var deleteResp struct {
+		Success bool `json:"success"`
+	}
+
+	if err := json.Unmarshal(resp.Payload(), &deleteResp); err != nil {
+		return false, fmt.Errorf("failed to unmarshal response: %w", err)
+	}
+
+	return deleteResp.Success, nil
+}

pkg/client/utils.go

@@ -0,0 +1,120 @@
+package client
+
+import (
+	"context"
+	"errors"
+	"math"
+	"math/rand"
+	"time"
+)
+
+// RetryableFunc is a function that can be retried
+type RetryableFunc func() error
+
+// Errors that can occur during client operations
+var (
+	// ErrNotConnected indicates the client is not connected to the server
+	ErrNotConnected = errors.New("not connected to server")
+
+	// ErrInvalidOptions indicates invalid client options
+	ErrInvalidOptions = errors.New("invalid client options")
+
+	// ErrTimeout indicates a request timed out
+	ErrTimeout = errors.New("request timed out")
+
+	// ErrKeyNotFound indicates a key was not found
+	ErrKeyNotFound = errors.New("key not found")
+
+	// ErrTransactionConflict indicates a transaction conflict occurred
+	ErrTransactionConflict = errors.New("transaction conflict detected")
+)
+
+// IsRetryableError returns true if the error is considered retryable
+func IsRetryableError(err error) bool {
+	if err == nil {
+		return false
+	}
+
+	// These errors are considered transient and can be retried
+	if errors.Is(err, ErrTimeout) || errors.Is(err, context.DeadlineExceeded) {
+		return true
+	}
+
+	// Other errors are considered permanent
+	return false
+}
+
+// RetryWithBackoff executes a function with exponential backoff and jitter
+func RetryWithBackoff(
+	ctx context.Context,
+	fn RetryableFunc,
+	maxRetries int,
+	initialBackoff time.Duration,
+	maxBackoff time.Duration,
+	backoffFactor float64,
+	jitter float64,
+) error {
+	var err error
+	backoff := initialBackoff
+
+	for attempt := 0; attempt <= maxRetries; attempt++ {
+		// Execute the function
+		err = fn()
+		if err == nil {
+			return nil
+		}
+
+		// Check if the error is retryable
+		if !IsRetryableError(err) {
+			return err
+		}
+
+		// Check if we've reached the retry limit
+		if attempt >= maxRetries {
+			return err
+		}
+
+		// Calculate next backoff with jitter
+		jitterRange := float64(backoff) * jitter
+		jitterAmount := int64(rand.Float64() * jitterRange)
+		sleepTime := backoff + time.Duration(jitterAmount)
+
+		// Check context before sleeping
+		select {
+		case <-ctx.Done():
+			return ctx.Err()
+		case <-time.After(sleepTime):
+			// Continue with next attempt
+		}
+
+		// Increase backoff for next attempt
+		backoff = time.Duration(float64(backoff) * backoffFactor)
+		if backoff > maxBackoff {
+			backoff = maxBackoff
+		}
+	}
+
+	return err
+}
+
+// CalculateExponentialBackoff calculates the backoff time for a given attempt
+func CalculateExponentialBackoff(
+	attempt int,
+	initialBackoff time.Duration,
+	maxBackoff time.Duration,
+	backoffFactor float64,
+	jitter float64,
+) time.Duration {
+	backoff := initialBackoff * time.Duration(math.Pow(backoffFactor, float64(attempt)))
+	if backoff > maxBackoff {
+		backoff = maxBackoff
+	}
+
+	if jitter > 0 {
+		jitterRange := float64(backoff) * jitter
+		jitterAmount := int64(rand.Float64() * jitterRange)
+		backoff = backoff + time.Duration(jitterAmount)
+	}
+
+	return backoff
+}

pkg/common/iterator/bounded/bounded.go

@@ -3,7 +3,7 @@ package bounded
 import (
 	"bytes"
 
-	"github.com/jeremytregunna/kevo/pkg/common/iterator"
+	"github.com/KevoDB/kevo/pkg/common/iterator"
 )
 
 // BoundedIterator wraps an iterator and limits it to a specific key range

pkg/common/iterator/composite/composite.go

@@ -1,7 +1,7 @@
 package composite
 
 import (
-	"github.com/jeremytregunna/kevo/pkg/common/iterator"
+	"github.com/KevoDB/kevo/pkg/common/iterator"
 )
 
 // CompositeIterator is an interface for iterators that combine multiple source iterators

pkg/common/iterator/composite/hierarchical.go

@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"sync"
 
-	"github.com/jeremytregunna/kevo/pkg/common/iterator"
+	"github.com/KevoDB/kevo/pkg/common/iterator"
 )
 
 // HierarchicalIterator implements an iterator that follows the LSM-tree hierarchy

pkg/common/iterator/composite/hierarchical_test.go

@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"testing"
 
-	"github.com/jeremytregunna/kevo/pkg/common/iterator"
+	"github.com/KevoDB/kevo/pkg/common/iterator"
 )
 
 // mockIterator is a simple in-memory iterator for testing

pkg/compaction/base_strategy.go

@@ -7,8 +7,8 @@ import (
 	"sort"
 	"strings"
 
-	"github.com/jeremytregunna/kevo/pkg/config"
-	"github.com/jeremytregunna/kevo/pkg/sstable"
+	"github.com/KevoDB/kevo/pkg/config"
+	"github.com/KevoDB/kevo/pkg/sstable"
 )
 
 // BaseCompactionStrategy provides common functionality for compaction strategies

pkg/compaction/compaction.go

@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"fmt"
 
-	"github.com/jeremytregunna/kevo/pkg/sstable"
+	"github.com/KevoDB/kevo/pkg/sstable"
 )
 
 // SSTableInfo represents metadata about an SSTable file

pkg/compaction/compaction_test.go

@@ -9,8 +9,8 @@ import (
 	"testing"
 	"time"
 
-	"github.com/jeremytregunna/kevo/pkg/config"
-	"github.com/jeremytregunna/kevo/pkg/sstable"
+	"github.com/KevoDB/kevo/pkg/config"
+	"github.com/KevoDB/kevo/pkg/sstable"
 )
 
 func createTestSSTable(t *testing.T, dir string, level, seq int, timestamp int64, keyValues map[string]string) string {

pkg/compaction/compat.go

@@ -3,7 +3,7 @@ package compaction
 import (
 	"time"
 
-	"github.com/jeremytregunna/kevo/pkg/config"
+	"github.com/KevoDB/kevo/pkg/config"
 )
 
 // NewCompactionManager creates a new compaction manager with the old API

pkg/compaction/coordinator.go

@@ -5,7 +5,7 @@ import (
 	"sync"
 	"time"
 
-	"github.com/jeremytregunna/kevo/pkg/config"
+	"github.com/KevoDB/kevo/pkg/config"
 )
 
 // CompactionCoordinatorOptions holds configuration options for the coordinator

pkg/compaction/executor.go

@@ -6,10 +6,10 @@ import (
 	"os"
 	"time"
 
-	"github.com/jeremytregunna/kevo/pkg/common/iterator"
-	"github.com/jeremytregunna/kevo/pkg/common/iterator/composite"
-	"github.com/jeremytregunna/kevo/pkg/config"
-	"github.com/jeremytregunna/kevo/pkg/sstable"
+	"github.com/KevoDB/kevo/pkg/common/iterator"
+	"github.com/KevoDB/kevo/pkg/common/iterator/composite"
+	"github.com/KevoDB/kevo/pkg/config"
+	"github.com/KevoDB/kevo/pkg/sstable"
 )
 
 // DefaultCompactionExecutor handles the actual compaction process

pkg/compaction/tiered_strategy.go

@@ -6,7 +6,7 @@ import (
 	"path/filepath"
 	"sort"
 
-	"github.com/jeremytregunna/kevo/pkg/config"
+	"github.com/KevoDB/kevo/pkg/config"
 )
 
 // TieredCompactionStrategy implements a tiered compaction strategy

pkg/engine/compaction.go

@@ -5,8 +5,8 @@ import (
 	"os"
 	"path/filepath"
 
-	"github.com/jeremytregunna/kevo/pkg/compaction"
-	"github.com/jeremytregunna/kevo/pkg/sstable"
+	"github.com/KevoDB/kevo/pkg/compaction"
+	"github.com/KevoDB/kevo/pkg/sstable"
 )
 
 // setupCompaction initializes the compaction manager for the engine

pkg/engine/engine.go

@@ -10,12 +10,12 @@ import (
 	"sync/atomic"
 	"time"
 
-	"github.com/jeremytregunna/kevo/pkg/common/iterator"
-	"github.com/jeremytregunna/kevo/pkg/compaction"
-	"github.com/jeremytregunna/kevo/pkg/config"
-	"github.com/jeremytregunna/kevo/pkg/memtable"
-	"github.com/jeremytregunna/kevo/pkg/sstable"
-	"github.com/jeremytregunna/kevo/pkg/wal"
+	"github.com/KevoDB/kevo/pkg/common/iterator"
+	"github.com/KevoDB/kevo/pkg/compaction"
+	"github.com/KevoDB/kevo/pkg/config"
+	"github.com/KevoDB/kevo/pkg/memtable"
+	"github.com/KevoDB/kevo/pkg/sstable"
+	"github.com/KevoDB/kevo/pkg/wal"
 )
 
 const (

pkg/engine/engine_test.go

@@ -8,7 +8,7 @@ import (
 	"testing"
 	"time"
 
-	"github.com/jeremytregunna/kevo/pkg/sstable"
+	"github.com/KevoDB/kevo/pkg/sstable"
 )
 
 func setupTest(t *testing.T) (string, *Engine, func()) {

pkg/engine/iterator.go

@@ -5,9 +5,9 @@ import (
 	"container/heap"
 	"sync"
 
-	"github.com/jeremytregunna/kevo/pkg/common/iterator"
-	"github.com/jeremytregunna/kevo/pkg/memtable"
-	"github.com/jeremytregunna/kevo/pkg/sstable"
+	"github.com/KevoDB/kevo/pkg/common/iterator"
+	"github.com/KevoDB/kevo/pkg/memtable"
+	"github.com/KevoDB/kevo/pkg/sstable"
 )
 
 // iterHeapItem represents an item in the priority queue of iterators

pkg/grpc/service/service.go

@@ -0,0 +1,511 @@
+package service
+
+import (
+	"context"
+	"fmt"
+	"sync"
+
+	"github.com/KevoDB/kevo/pkg/common/iterator"
+	"github.com/KevoDB/kevo/pkg/engine"
+	pb "github.com/KevoDB/kevo/proto/kevo"
+)
+
+// TxRegistry is the interface we need for the transaction registry
+type TxRegistry interface {
+	Begin(ctx context.Context, eng *engine.Engine, readOnly bool) (string, error)
+	Get(txID string) (engine.Transaction, bool)
+	Remove(txID string)
+}
+
+// KevoServiceServer implements the gRPC KevoService interface
+type KevoServiceServer struct {
+	pb.UnimplementedKevoServiceServer
+	engine           *engine.Engine
+	txRegistry       TxRegistry
+	activeTx         sync.Map // map[string]engine.Transaction
+	txMu             sync.Mutex
+	compactionSem    chan struct{} // Semaphore for limiting concurrent compactions
+	maxKeySize       int           // Maximum allowed key size
+	maxValueSize     int           // Maximum allowed value size
+	maxBatchSize     int           // Maximum number of operations in a batch
+	maxTransactions  int           // Maximum number of concurrent transactions
+	transactionTTL   int64         // Maximum time in seconds a transaction can be idle
+	activeTransCount int32         // Count of active transactions
+}
+
+// NewKevoServiceServer creates a new KevoServiceServer
+func NewKevoServiceServer(engine *engine.Engine, txRegistry TxRegistry) *KevoServiceServer {
+	return &KevoServiceServer{
+		engine:          engine,
+		txRegistry:      txRegistry,
+		compactionSem:   make(chan struct{}, 1), // Allow only one compaction at a time
+		maxKeySize:      4096,                   // 4KB
+		maxValueSize:    10 * 1024 * 1024,       // 10MB
+		maxBatchSize:    1000,
+		maxTransactions: 1000,
+		transactionTTL:  300, // 5 minutes
+	}
+}
+
+// Get retrieves a value for a given key
+func (s *KevoServiceServer) Get(ctx context.Context, req *pb.GetRequest) (*pb.GetResponse, error) {
+	if len(req.Key) == 0 || len(req.Key) > s.maxKeySize {
+		return nil, fmt.Errorf("invalid key size")
+	}
+
+	value, err := s.engine.Get(req.Key)
+	if err != nil {
+		return &pb.GetResponse{Found: false}, nil
+	}
+
+	return &pb.GetResponse{
+		Value: value,
+		Found: true,
+	}, nil
+}
+
+// Put stores a key-value pair
+func (s *KevoServiceServer) Put(ctx context.Context, req *pb.PutRequest) (*pb.PutResponse, error) {
+	if len(req.Key) == 0 || len(req.Key) > s.maxKeySize {
+		return nil, fmt.Errorf("invalid key size")
+	}
+
+	if len(req.Value) > s.maxValueSize {
+		return nil, fmt.Errorf("value too large")
+	}
+
+	if err := s.engine.Put(req.Key, req.Value); err != nil {
+		return &pb.PutResponse{Success: false}, err
+	}
+
+	return &pb.PutResponse{Success: true}, nil
+}
+
+// Delete removes a key-value pair
+func (s *KevoServiceServer) Delete(ctx context.Context, req *pb.DeleteRequest) (*pb.DeleteResponse, error) {
+	if len(req.Key) == 0 || len(req.Key) > s.maxKeySize {
+		return nil, fmt.Errorf("invalid key size")
+	}
+
+	if err := s.engine.Delete(req.Key); err != nil {
+		return &pb.DeleteResponse{Success: false}, err
+	}
+
+	return &pb.DeleteResponse{Success: true}, nil
+}
+
+// BatchWrite performs multiple operations in a batch
+func (s *KevoServiceServer) BatchWrite(ctx context.Context, req *pb.BatchWriteRequest) (*pb.BatchWriteResponse, error) {
+	if len(req.Operations) == 0 {
+		return &pb.BatchWriteResponse{Success: true}, nil
+	}
+
+	if len(req.Operations) > s.maxBatchSize {
+		return nil, fmt.Errorf("batch size exceeds maximum allowed (%d)", s.maxBatchSize)
+	}
+
+	// Start a transaction for atomic batch operations
+	tx, err := s.engine.BeginTransaction(false) // Read-write transaction
+	if err != nil {
+		return &pb.BatchWriteResponse{Success: false}, fmt.Errorf("failed to start transaction: %w", err)
+	}
+	
+	// Ensure we either commit or rollback
+	defer func() {
+		if err != nil {
+			tx.Rollback()
+		}
+	}()
+
+	// Process each operation
+	for _, op := range req.Operations {
+		if len(op.Key) == 0 || len(op.Key) > s.maxKeySize {
+			err = fmt.Errorf("invalid key size in batch operation")
+			return &pb.BatchWriteResponse{Success: false}, err
+		}
+
+		switch op.Type {
+		case pb.Operation_PUT:
+			if len(op.Value) > s.maxValueSize {
+				err = fmt.Errorf("value too large in batch operation")
+				return &pb.BatchWriteResponse{Success: false}, err
+			}
+			if err = tx.Put(op.Key, op.Value); err != nil {
+				return &pb.BatchWriteResponse{Success: false}, err
+			}
+		case pb.Operation_DELETE:
+			if err = tx.Delete(op.Key); err != nil {
+				return &pb.BatchWriteResponse{Success: false}, err
+			}
+		default:
+			err = fmt.Errorf("unknown operation type")
+			return &pb.BatchWriteResponse{Success: false}, err
+		}
+	}
+
+	// Commit the transaction
+	if err = tx.Commit(); err != nil {
+		return &pb.BatchWriteResponse{Success: false}, err
+	}
+
+	return &pb.BatchWriteResponse{Success: true}, nil
+}
+
+// Scan iterates over a range of keys
+func (s *KevoServiceServer) Scan(req *pb.ScanRequest, stream pb.KevoService_ScanServer) error {
+	var limit int32 = 0
+	if req.Limit > 0 {
+		limit = req.Limit
+	}
+
+	// Create a read-only transaction for consistent snapshot
+	tx, err := s.engine.BeginTransaction(true)
+	if err != nil {
+		return fmt.Errorf("failed to begin transaction: %w", err)
+	}
+	defer tx.Rollback() // Always rollback read-only TX when done
+
+	// Create appropriate iterator based on request parameters
+	var iter iterator.Iterator
+	if len(req.Prefix) > 0 {
+		// Create a prefix iterator
+		prefixIter := tx.NewIterator()
+		iter = newPrefixIterator(prefixIter, req.Prefix)
+	} else if len(req.StartKey) > 0 || len(req.EndKey) > 0 {
+		// Create a range iterator
+		iter = tx.NewRangeIterator(req.StartKey, req.EndKey)
+	} else {
+		// Create a full scan iterator
+		iter = tx.NewIterator()
+	}
+
+	count := int32(0)
+	// Position iterator at the first entry
+	iter.SeekToFirst()
+	
+	// Iterate through all valid entries
+	for iter.Valid() {
+		if limit > 0 && count >= limit {
+			break
+		}
+
+		// Skip tombstones (deletion markers)
+		if !iter.IsTombstone() {
+			if err := stream.Send(&pb.ScanResponse{
+				Key:   iter.Key(),
+				Value: iter.Value(),
+			}); err != nil {
+				return err
+			}
+			count++
+		}
+		
+		// Move to the next entry
+		iter.Next()
+	}
+
+	return nil
+}
+
+// prefixIterator wraps another iterator and filters for a prefix
+type prefixIterator struct {
+	iter   iterator.Iterator
+	prefix []byte
+	err    error
+}
+
+func newPrefixIterator(iter iterator.Iterator, prefix []byte) *prefixIterator {
+	return &prefixIterator{
+		iter:   iter,
+		prefix: prefix,
+	}
+}
+
+func (pi *prefixIterator) Next() bool {
+	for pi.iter.Next() {
+		// Check if current key has the prefix
+		key := pi.iter.Key()
+		if len(key) >= len(pi.prefix) && 
+		   equalByteSlice(key[:len(pi.prefix)], pi.prefix) {
+			return true
+		}
+	}
+	return false
+}
+
+func (pi *prefixIterator) Key() []byte {
+	return pi.iter.Key()
+}
+
+func (pi *prefixIterator) Value() []byte {
+	return pi.iter.Value()
+}
+
+func (pi *prefixIterator) Valid() bool {
+	return pi.iter.Valid()
+}
+
+func (pi *prefixIterator) IsTombstone() bool {
+	return pi.iter.IsTombstone()
+}
+
+func (pi *prefixIterator) SeekToFirst() {
+	pi.iter.SeekToFirst()
+}
+
+func (pi *prefixIterator) SeekToLast() {
+	pi.iter.SeekToLast()
+}
+
+func (pi *prefixIterator) Seek(target []byte) bool {
+	return pi.iter.Seek(target)
+}
+
+// equalByteSlice compares two byte slices for equality
+func equalByteSlice(a, b []byte) bool {
+	if len(a) != len(b) {
+		return false
+	}
+	for i := 0; i < len(a); i++ {
+		if a[i] != b[i] {
+			return false
+		}
+	}
+	return true
+}
+
+// BeginTransaction starts a new transaction
+func (s *KevoServiceServer) BeginTransaction(ctx context.Context, req *pb.BeginTransactionRequest) (*pb.BeginTransactionResponse, error) {
+	txID, err := s.txRegistry.Begin(ctx, s.engine, req.ReadOnly)
+	if err != nil {
+		return nil, fmt.Errorf("failed to begin transaction: %w", err)
+	}
+
+	return &pb.BeginTransactionResponse{
+		TransactionId: txID,
+	}, nil
+}
+
+// CommitTransaction commits an ongoing transaction
+func (s *KevoServiceServer) CommitTransaction(ctx context.Context, req *pb.CommitTransactionRequest) (*pb.CommitTransactionResponse, error) {
+	tx, exists := s.txRegistry.Get(req.TransactionId)
+	if !exists {
+		return nil, fmt.Errorf("transaction not found: %s", req.TransactionId)
+	}
+
+	if err := tx.Commit(); err != nil {
+		return &pb.CommitTransactionResponse{Success: false}, err
+	}
+
+	s.txRegistry.Remove(req.TransactionId)
+	return &pb.CommitTransactionResponse{Success: true}, nil
+}
+
+// RollbackTransaction aborts an ongoing transaction
+func (s *KevoServiceServer) RollbackTransaction(ctx context.Context, req *pb.RollbackTransactionRequest) (*pb.RollbackTransactionResponse, error) {
+	tx, exists := s.txRegistry.Get(req.TransactionId)
+	if !exists {
+		return nil, fmt.Errorf("transaction not found: %s", req.TransactionId)
+	}
+
+	if err := tx.Rollback(); err != nil {
+		return &pb.RollbackTransactionResponse{Success: false}, err
+	}
+
+	s.txRegistry.Remove(req.TransactionId)
+	return &pb.RollbackTransactionResponse{Success: true}, nil
+}
+
+// TxGet retrieves a value for a given key within a transaction
+func (s *KevoServiceServer) TxGet(ctx context.Context, req *pb.TxGetRequest) (*pb.TxGetResponse, error) {
+	tx, exists := s.txRegistry.Get(req.TransactionId)
+	if !exists {
+		return nil, fmt.Errorf("transaction not found: %s", req.TransactionId)
+	}
+
+	if len(req.Key) == 0 || len(req.Key) > s.maxKeySize {
+		return nil, fmt.Errorf("invalid key size")
+	}
+
+	value, err := tx.Get(req.Key)
+	if err != nil {
+		return &pb.TxGetResponse{Found: false}, nil
+	}
+
+	return &pb.TxGetResponse{
+		Value: value,
+		Found: true,
+	}, nil
+}
+
+// TxPut stores a key-value pair within a transaction
+func (s *KevoServiceServer) TxPut(ctx context.Context, req *pb.TxPutRequest) (*pb.TxPutResponse, error) {
+	tx, exists := s.txRegistry.Get(req.TransactionId)
+	if !exists {
+		return nil, fmt.Errorf("transaction not found: %s", req.TransactionId)
+	}
+
+	if tx.IsReadOnly() {
+		return nil, fmt.Errorf("cannot write to read-only transaction")
+	}
+
+	if len(req.Key) == 0 || len(req.Key) > s.maxKeySize {
+		return nil, fmt.Errorf("invalid key size")
+	}
+
+	if len(req.Value) > s.maxValueSize {
+		return nil, fmt.Errorf("value too large")
+	}
+
+	if err := tx.Put(req.Key, req.Value); err != nil {
+		return &pb.TxPutResponse{Success: false}, err
+	}
+
+	return &pb.TxPutResponse{Success: true}, nil
+}
+
+// TxDelete removes a key-value pair within a transaction
+func (s *KevoServiceServer) TxDelete(ctx context.Context, req *pb.TxDeleteRequest) (*pb.TxDeleteResponse, error) {
+	tx, exists := s.txRegistry.Get(req.TransactionId)
+	if !exists {
+		return nil, fmt.Errorf("transaction not found: %s", req.TransactionId)
+	}
+
+	if tx.IsReadOnly() {
+		return nil, fmt.Errorf("cannot delete in read-only transaction")
+	}
+
+	if len(req.Key) == 0 || len(req.Key) > s.maxKeySize {
+		return nil, fmt.Errorf("invalid key size")
+	}
+
+	if err := tx.Delete(req.Key); err != nil {
+		return &pb.TxDeleteResponse{Success: false}, err
+	}
+
+	return &pb.TxDeleteResponse{Success: true}, nil
+}
+
+// TxScan iterates over a range of keys within a transaction
+func (s *KevoServiceServer) TxScan(req *pb.TxScanRequest, stream pb.KevoService_TxScanServer) error {
+	tx, exists := s.txRegistry.Get(req.TransactionId)
+	if !exists {
+		return fmt.Errorf("transaction not found: %s", req.TransactionId)
+	}
+
+	var limit int32 = 0
+	if req.Limit > 0 {
+		limit = req.Limit
+	}
+
+	// Create appropriate iterator based on request parameters
+	var iter iterator.Iterator
+	if len(req.Prefix) > 0 {
+		// Create a prefix iterator
+		rawIter := tx.NewIterator()
+		iter = newPrefixIterator(rawIter, req.Prefix)
+	} else if len(req.StartKey) > 0 || len(req.EndKey) > 0 {
+		// Create a range iterator
+		iter = tx.NewRangeIterator(req.StartKey, req.EndKey)
+	} else {
+		// Create a full scan iterator
+		iter = tx.NewIterator()
+	}
+
+	count := int32(0)
+	// Position iterator at the first entry
+	iter.SeekToFirst()
+	
+	// Iterate through all valid entries
+	for iter.Valid() {
+		if limit > 0 && count >= limit {
+			break
+		}
+
+		// Skip tombstones (deletion markers)
+		if !iter.IsTombstone() {
+			if err := stream.Send(&pb.TxScanResponse{
+				Key:   iter.Key(),
+				Value: iter.Value(),
+			}); err != nil {
+				return err
+			}
+			count++
+		}
+		
+		// Move to the next entry
+		iter.Next()
+	}
+
+	return nil
+}
+
+// GetStats retrieves database statistics
+func (s *KevoServiceServer) GetStats(ctx context.Context, req *pb.GetStatsRequest) (*pb.GetStatsResponse, error) {
+	// Collect basic stats that we know are available
+	keyCount := int64(0)
+	sstableCount := int32(0)
+	memtableCount := int32(1) // At least 1 active memtable
+	
+	// Create a read-only transaction to count keys
+	tx, err := s.engine.BeginTransaction(true)
+	if err != nil {
+		return nil, fmt.Errorf("failed to begin transaction for stats: %w", err)
+	}
+	defer tx.Rollback()
+	
+	// Use an iterator to count keys
+	iter := tx.NewIterator()
+	
+	// Count keys and estimate size
+	var totalSize int64
+	for iter.Next() {
+		keyCount++
+		totalSize += int64(len(iter.Key()) + len(iter.Value()))
+	}
+
+	return &pb.GetStatsResponse{
+		KeyCount:           keyCount,
+		StorageSize:        totalSize,
+		MemtableCount:      memtableCount,
+		SstableCount:       sstableCount,
+		WriteAmplification: 1.0, // Placeholder
+		ReadAmplification:  1.0, // Placeholder
+	}, nil
+}
+
+// Compact triggers database compaction
+func (s *KevoServiceServer) Compact(ctx context.Context, req *pb.CompactRequest) (*pb.CompactResponse, error) {
+	// Use a semaphore to prevent multiple concurrent compactions
+	select {
+	case s.compactionSem <- struct{}{}:
+		// We got the semaphore, proceed with compaction
+		defer func() { <-s.compactionSem }()
+	default:
+		// Semaphore is full, compaction is already running
+		return &pb.CompactResponse{Success: false}, fmt.Errorf("compaction is already in progress")
+	}
+
+	// For now, Compact just performs a memtable flush as we don't have a public
+	// Compact method on the engine yet
+	tx, err := s.engine.BeginTransaction(false)
+	if err != nil {
+		return &pb.CompactResponse{Success: false}, err
+	}
+	
+	// Do a dummy write to force a flush
+	if req.Force {
+		err = tx.Put([]byte("__compact_marker__"), []byte("force"))
+		if err != nil {
+			tx.Rollback()
+			return &pb.CompactResponse{Success: false}, err
+		}
+	}
+	
+	err = tx.Commit()
+	if err != nil {
+		return &pb.CompactResponse{Success: false}, err
+	}
+
+	return &pb.CompactResponse{Success: true}, nil
+}

pkg/grpc/transport/benchmark.go

@@ -0,0 +1,59 @@
+package transport
+
+import (
+	"context"
+	"time"
+)
+
+// BenchmarkOptions defines the options for gRPC benchmarking
+type BenchmarkOptions struct {
+	Address     string
+	Connections int
+	Iterations  int
+	KeySize     int
+	ValueSize   int
+	Parallelism int
+	UseTLS      bool
+	TLSConfig   *TLSConfig
+}
+
+// BenchmarkResult holds the results of a benchmark run
+type BenchmarkResult struct {
+	Operation       string
+	TotalTime       time.Duration
+	RequestsPerSec  float64
+	AvgLatency      time.Duration
+	MinLatency      time.Duration
+	MaxLatency      time.Duration
+	P90Latency      time.Duration
+	P99Latency      time.Duration
+	TotalBytes      int64
+	BytesPerSecond  float64
+	ErrorRate       float64
+	TotalOperations int
+	FailedOps       int
+}
+
+// NOTE: This is a stub implementation
+// A proper benchmark requires the full client implementation
+// which will be completed in a later phase
+func Benchmark(ctx context.Context, opts *BenchmarkOptions) (map[string]*BenchmarkResult, error) {
+	results := make(map[string]*BenchmarkResult)
+	results["put"] = &BenchmarkResult{
+		Operation:      "Put",
+		TotalTime:      time.Second,
+		RequestsPerSec: 1000.0,
+	}
+	return results, nil
+}
+
+// sortDurations sorts a slice of durations in ascending order
+func sortDurations(durations []time.Duration) {
+	for i := 0; i < len(durations); i++ {
+		for j := i + 1; j < len(durations); j++ {
+			if durations[i] > durations[j] {
+				durations[i], durations[j] = durations[j], durations[i]
+			}
+		}
+	}
+}

pkg/grpc/transport/client.go

@@ -0,0 +1,675 @@
+package transport
+
+import (
+	"context"
+	"crypto/tls"
+	"encoding/json"
+	"fmt"
+	"io"
+	"sync"
+	"time"
+
+	pb "github.com/KevoDB/kevo/proto/kevo"
+	"github.com/KevoDB/kevo/pkg/transport"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials"
+	"google.golang.org/grpc/credentials/insecure"
+	"google.golang.org/grpc/keepalive"
+)
+
+// GRPCClient implements the transport.Client interface for gRPC
+type GRPCClient struct {
+	endpoint   string
+	options    transport.TransportOptions
+	conn       *grpc.ClientConn
+	client     pb.KevoServiceClient
+	status     transport.TransportStatus
+	statusMu   sync.RWMutex
+	metrics    transport.MetricsCollector
+}
+
+// NewGRPCClient creates a new gRPC client
+func NewGRPCClient(endpoint string, options transport.TransportOptions) (transport.Client, error) {
+	return &GRPCClient{
+		endpoint: endpoint,
+		options:  options,
+		metrics:  transport.NewMetricsCollector(),
+		status: transport.TransportStatus{
+			Connected: false,
+		},
+	}, nil
+}
+
+// Connect establishes a connection to the server
+func (c *GRPCClient) Connect(ctx context.Context) error {
+	dialOptions := []grpc.DialOption{
+		grpc.WithKeepaliveParams(keepalive.ClientParameters{
+			Time:                15 * time.Second,
+			Timeout:             5 * time.Second,
+			PermitWithoutStream: true,
+		}),
+	}
+
+	// Configure TLS if enabled
+	if c.options.TLSEnabled {
+		tlsConfig := &tls.Config{
+			MinVersion: tls.VersionTLS12,
+		}
+
+		// Load client certificate if provided
+		if c.options.CertFile != "" && c.options.KeyFile != "" {
+			cert, err := tls.LoadX509KeyPair(c.options.CertFile, c.options.KeyFile)
+			if err != nil {
+				c.metrics.RecordConnection(false)
+				return fmt.Errorf("failed to load client certificate: %w", err)
+			}
+			tlsConfig.Certificates = []tls.Certificate{cert}
+		}
+
+		// Add credentials to dial options
+		dialOptions = append(dialOptions, grpc.WithTransportCredentials(credentials.NewTLS(tlsConfig)))
+	} else {
+		// Use insecure credentials if TLS is not enabled
+		dialOptions = append(dialOptions, grpc.WithTransportCredentials(insecure.NewCredentials()))
+	}
+
+	// Set timeout for connection
+	dialCtx, cancel := context.WithTimeout(ctx, c.options.Timeout)
+	defer cancel()
+
+	// Connect to the server
+	conn, err := grpc.DialContext(dialCtx, c.endpoint, dialOptions...)
+	if err != nil {
+		c.metrics.RecordConnection(false)
+		c.setStatus(false, err)
+		return fmt.Errorf("failed to connect to %s: %w", c.endpoint, err)
+	}
+
+	c.conn = conn
+	c.client = pb.NewKevoServiceClient(conn)
+	c.metrics.RecordConnection(true)
+	c.setStatus(true, nil)
+
+	return nil
+}
+
+// Close closes the connection
+func (c *GRPCClient) Close() error {
+	if c.conn != nil {
+		err := c.conn.Close()
+		c.conn = nil
+		c.client = nil
+		c.setStatus(false, nil)
+		return err
+	}
+	return nil
+}
+
+// IsConnected returns whether the client is connected
+func (c *GRPCClient) IsConnected() bool {
+	c.statusMu.RLock()
+	defer c.statusMu.RUnlock()
+	return c.status.Connected
+}
+
+// Status returns the current status of the connection
+func (c *GRPCClient) Status() transport.TransportStatus {
+	c.statusMu.RLock()
+	defer c.statusMu.RUnlock()
+	return c.status
+}
+
+// setStatus updates the client status
+func (c *GRPCClient) setStatus(connected bool, err error) {
+	c.statusMu.Lock()
+	defer c.statusMu.Unlock()
+	
+	c.status.Connected = connected
+	c.status.LastError = err
+	
+	if connected {
+		c.status.LastConnected = time.Now()
+	}
+}
+
+// Send sends a request and waits for a response
+func (c *GRPCClient) Send(ctx context.Context, request transport.Request) (transport.Response, error) {
+	if !c.IsConnected() {
+		return nil, transport.ErrNotConnected
+	}
+
+	// Record request metrics
+	startTime := time.Now()
+	requestType := request.Type()
+	
+	// Record bytes sent
+	requestPayload := request.Payload()
+	c.metrics.RecordSend(len(requestPayload))
+	
+	var resp transport.Response
+	var err error
+
+	// Handle request based on type
+	switch requestType {
+	case transport.TypeGet:
+		resp, err = c.handleGet(ctx, requestPayload)
+	case transport.TypePut:
+		resp, err = c.handlePut(ctx, requestPayload)
+	case transport.TypeDelete:
+		resp, err = c.handleDelete(ctx, requestPayload)
+	case transport.TypeBatchWrite:
+		resp, err = c.handleBatchWrite(ctx, requestPayload)
+	case transport.TypeBeginTx:
+		resp, err = c.handleBeginTransaction(ctx, requestPayload)
+	case transport.TypeCommitTx:
+		resp, err = c.handleCommitTransaction(ctx, requestPayload)
+	case transport.TypeRollbackTx:
+		resp, err = c.handleRollbackTransaction(ctx, requestPayload)
+	case transport.TypeTxGet:
+		resp, err = c.handleTxGet(ctx, requestPayload)
+	case transport.TypeTxPut:
+		resp, err = c.handleTxPut(ctx, requestPayload)
+	case transport.TypeTxDelete:
+		resp, err = c.handleTxDelete(ctx, requestPayload)
+	case transport.TypeGetStats:
+		resp, err = c.handleGetStats(ctx, requestPayload)
+	case transport.TypeCompact:
+		resp, err = c.handleCompact(ctx, requestPayload)
+	default:
+		err = fmt.Errorf("unsupported request type: %s", requestType)
+		resp = transport.NewErrorResponse(err)
+	}
+
+	// Record metrics for the request
+	c.metrics.RecordRequest(requestType, startTime, err)
+	
+	// If we got a response, record received bytes
+	if resp != nil {
+		c.metrics.RecordReceive(len(resp.Payload()))
+	}
+	
+	return resp, err
+}
+
+// Stream opens a bidirectional stream
+func (c *GRPCClient) Stream(ctx context.Context) (transport.Stream, error) {
+	if !c.IsConnected() {
+		return nil, transport.ErrNotConnected
+	}
+
+	// For now, we'll implement streaming only for scan operations
+	return nil, fmt.Errorf("streaming not fully implemented yet")
+}
+
+// Request handler methods
+func (c *GRPCClient) handleGet(ctx context.Context, payload []byte) (transport.Response, error) {
+	var req struct {
+		Key []byte `json:"key"`
+	}
+	
+	if err := json.Unmarshal(payload, &req); err != nil {
+		return transport.NewErrorResponse(fmt.Errorf("invalid get request payload: %w", err)), err
+	}
+	
+	grpcReq := &pb.GetRequest{
+		Key: req.Key,
+	}
+	
+	grpcResp, err := c.client.Get(ctx, grpcReq)
+	if err != nil {
+		return transport.NewErrorResponse(err), err
+	}
+	
+	resp := struct {
+		Value []byte `json:"value"`
+		Found bool   `json:"found"`
+	}{
+		Value: grpcResp.Value,
+		Found: grpcResp.Found,
+	}
+	
+	respData, err := json.Marshal(resp)
+	if err != nil {
+		return transport.NewErrorResponse(err), err
+	}
+	
+	return transport.NewResponse(transport.TypeGet, respData, nil), nil
+}
+
+func (c *GRPCClient) handlePut(ctx context.Context, payload []byte) (transport.Response, error) {
+	var req struct {
+		Key   []byte `json:"key"`
+		Value []byte `json:"value"`
+		Sync  bool   `json:"sync"`
+	}
+	
+	if err := json.Unmarshal(payload, &req); err != nil {
+		return transport.NewErrorResponse(fmt.Errorf("invalid put request payload: %w", err)), err
+	}
+	
+	grpcReq := &pb.PutRequest{
+		Key:   req.Key,
+		Value: req.Value,
+		Sync:  req.Sync,
+	}
+	
+	grpcResp, err := c.client.Put(ctx, grpcReq)
+	if err != nil {
+		return transport.NewErrorResponse(err), err
+	}
+	
+	resp := struct {
+		Success bool `json:"success"`
+	}{
+		Success: grpcResp.Success,
+	}
+	
+	respData, err := json.Marshal(resp)
+	if err != nil {
+		return transport.NewErrorResponse(err), err
+	}
+	
+	return transport.NewResponse(transport.TypePut, respData, nil), nil
+}
+
+func (c *GRPCClient) handleDelete(ctx context.Context, payload []byte) (transport.Response, error) {
+	var req struct {
+		Key  []byte `json:"key"`
+		Sync bool   `json:"sync"`
+	}
+	
+	if err := json.Unmarshal(payload, &req); err != nil {
+		return transport.NewErrorResponse(fmt.Errorf("invalid delete request payload: %w", err)), err
+	}
+	
+	grpcReq := &pb.DeleteRequest{
+		Key:  req.Key,
+		Sync: req.Sync,
+	}
+	
+	grpcResp, err := c.client.Delete(ctx, grpcReq)
+	if err != nil {
+		return transport.NewErrorResponse(err), err
+	}
+	
+	resp := struct {
+		Success bool `json:"success"`
+	}{
+		Success: grpcResp.Success,
+	}
+	
+	respData, err := json.Marshal(resp)
+	if err != nil {
+		return transport.NewErrorResponse(err), err
+	}
+	
+	return transport.NewResponse(transport.TypeDelete, respData, nil), nil
+}
+
+func (c *GRPCClient) handleBatchWrite(ctx context.Context, payload []byte) (transport.Response, error) {
+	var req struct {
+		Operations []struct {
+			Type  string `json:"type"`
+			Key   []byte `json:"key"`
+			Value []byte `json:"value"`
+		} `json:"operations"`
+		Sync bool `json:"sync"`
+	}
+	
+	if err := json.Unmarshal(payload, &req); err != nil {
+		return transport.NewErrorResponse(fmt.Errorf("invalid batch write request payload: %w", err)), err
+	}
+	
+	operations := make([]*pb.Operation, len(req.Operations))
+	for i, op := range req.Operations {
+		pbOp := &pb.Operation{
+			Key:   op.Key,
+			Value: op.Value,
+		}
+		
+		switch op.Type {
+		case "put":
+			pbOp.Type = pb.Operation_PUT
+		case "delete":
+			pbOp.Type = pb.Operation_DELETE
+		default:
+			return transport.NewErrorResponse(fmt.Errorf("invalid operation type: %s", op.Type)), fmt.Errorf("invalid operation type: %s", op.Type)
+		}
+		
+		operations[i] = pbOp
+	}
+	
+	grpcReq := &pb.BatchWriteRequest{
+		Operations: operations,
+		Sync:       req.Sync,
+	}
+	
+	grpcResp, err := c.client.BatchWrite(ctx, grpcReq)
+	if err != nil {
+		return transport.NewErrorResponse(err), err
+	}
+	
+	resp := struct {
+		Success bool `json:"success"`
+	}{
+		Success: grpcResp.Success,
+	}
+	
+	respData, err := json.Marshal(resp)
+	if err != nil {
+		return transport.NewErrorResponse(err), err
+	}
+	
+	return transport.NewResponse(transport.TypeBatchWrite, respData, nil), nil
+}
+
+func (c *GRPCClient) handleBeginTransaction(ctx context.Context, payload []byte) (transport.Response, error) {
+	var req struct {
+		ReadOnly bool `json:"read_only"`
+	}
+	
+	if err := json.Unmarshal(payload, &req); err != nil {
+		return transport.NewErrorResponse(fmt.Errorf("invalid begin transaction request payload: %w", err)), err
+	}
+	
+	grpcReq := &pb.BeginTransactionRequest{
+		ReadOnly: req.ReadOnly,
+	}
+	
+	grpcResp, err := c.client.BeginTransaction(ctx, grpcReq)
+	if err != nil {
+		return transport.NewErrorResponse(err), err
+	}
+	
+	resp := struct {
+		TransactionID string `json:"transaction_id"`
+	}{
+		TransactionID: grpcResp.TransactionId,
+	}
+	
+	respData, err := json.Marshal(resp)
+	if err != nil {
+		return transport.NewErrorResponse(err), err
+	}
+	
+	return transport.NewResponse(transport.TypeBeginTx, respData, nil), nil
+}
+
+func (c *GRPCClient) handleCommitTransaction(ctx context.Context, payload []byte) (transport.Response, error) {
+	var req struct {
+		TransactionID string `json:"transaction_id"`
+	}
+	
+	if err := json.Unmarshal(payload, &req); err != nil {
+		return transport.NewErrorResponse(fmt.Errorf("invalid commit transaction request payload: %w", err)), err
+	}
+	
+	grpcReq := &pb.CommitTransactionRequest{
+		TransactionId: req.TransactionID,
+	}
+	
+	grpcResp, err := c.client.CommitTransaction(ctx, grpcReq)
+	if err != nil {
+		return transport.NewErrorResponse(err), err
+	}
+	
+	resp := struct {
+		Success bool `json:"success"`
+	}{
+		Success: grpcResp.Success,
+	}
+	
+	respData, err := json.Marshal(resp)
+	if err != nil {
+		return transport.NewErrorResponse(err), err
+	}
+	
+	return transport.NewResponse(transport.TypeCommitTx, respData, nil), nil
+}
+
+func (c *GRPCClient) handleRollbackTransaction(ctx context.Context, payload []byte) (transport.Response, error) {
+	var req struct {
+		TransactionID string `json:"transaction_id"`
+	}
+	
+	if err := json.Unmarshal(payload, &req); err != nil {
+		return transport.NewErrorResponse(fmt.Errorf("invalid rollback transaction request payload: %w", err)), err
+	}
+	
+	grpcReq := &pb.RollbackTransactionRequest{
+		TransactionId: req.TransactionID,
+	}
+	
+	grpcResp, err := c.client.RollbackTransaction(ctx, grpcReq)
+	if err != nil {
+		return transport.NewErrorResponse(err), err
+	}
+	
+	resp := struct {
+		Success bool `json:"success"`
+	}{
+		Success: grpcResp.Success,
+	}
+	
+	respData, err := json.Marshal(resp)
+	if err != nil {
+		return transport.NewErrorResponse(err), err
+	}
+	
+	return transport.NewResponse(transport.TypeRollbackTx, respData, nil), nil
+}
+
+func (c *GRPCClient) handleTxGet(ctx context.Context, payload []byte) (transport.Response, error) {
+	var req struct {
+		TransactionID string `json:"transaction_id"`
+		Key           []byte `json:"key"`
+	}
+	
+	if err := json.Unmarshal(payload, &req); err != nil {
+		return transport.NewErrorResponse(fmt.Errorf("invalid tx get request payload: %w", err)), err
+	}
+	
+	grpcReq := &pb.TxGetRequest{
+		TransactionId: req.TransactionID,
+		Key:           req.Key,
+	}
+	
+	grpcResp, err := c.client.TxGet(ctx, grpcReq)
+	if err != nil {
+		return transport.NewErrorResponse(err), err
+	}
+	
+	resp := struct {
+		Value []byte `json:"value"`
+		Found bool   `json:"found"`
+	}{
+		Value: grpcResp.Value,
+		Found: grpcResp.Found,
+	}
+	
+	respData, err := json.Marshal(resp)
+	if err != nil {
+		return transport.NewErrorResponse(err), err
+	}
+	
+	return transport.NewResponse(transport.TypeTxGet, respData, nil), nil
+}
+
+func (c *GRPCClient) handleTxPut(ctx context.Context, payload []byte) (transport.Response, error) {
+	var req struct {
+		TransactionID string `json:"transaction_id"`
+		Key           []byte `json:"key"`
+		Value         []byte `json:"value"`
+	}
+	
+	if err := json.Unmarshal(payload, &req); err != nil {
+		return transport.NewErrorResponse(fmt.Errorf("invalid tx put request payload: %w", err)), err
+	}
+	
+	grpcReq := &pb.TxPutRequest{
+		TransactionId: req.TransactionID,
+		Key:           req.Key,
+		Value:         req.Value,
+	}
+	
+	grpcResp, err := c.client.TxPut(ctx, grpcReq)
+	if err != nil {
+		return transport.NewErrorResponse(err), err
+	}
+	
+	resp := struct {
+		Success bool `json:"success"`
+	}{
+		Success: grpcResp.Success,
+	}
+	
+	respData, err := json.Marshal(resp)
+	if err != nil {
+		return transport.NewErrorResponse(err), err
+	}
+	
+	return transport.NewResponse(transport.TypeTxPut, respData, nil), nil
+}
+
+func (c *GRPCClient) handleTxDelete(ctx context.Context, payload []byte) (transport.Response, error) {
+	var req struct {
+		TransactionID string `json:"transaction_id"`
+		Key           []byte `json:"key"`
+	}
+	
+	if err := json.Unmarshal(payload, &req); err != nil {
+		return transport.NewErrorResponse(fmt.Errorf("invalid tx delete request payload: %w", err)), err
+	}
+	
+	grpcReq := &pb.TxDeleteRequest{
+		TransactionId: req.TransactionID,
+		Key:           req.Key,
+	}
+	
+	grpcResp, err := c.client.TxDelete(ctx, grpcReq)
+	if err != nil {
+		return transport.NewErrorResponse(err), err
+	}
+	
+	resp := struct {
+		Success bool `json:"success"`
+	}{
+		Success: grpcResp.Success,
+	}
+	
+	respData, err := json.Marshal(resp)
+	if err != nil {
+		return transport.NewErrorResponse(err), err
+	}
+	
+	return transport.NewResponse(transport.TypeTxDelete, respData, nil), nil
+}
+
+func (c *GRPCClient) handleGetStats(ctx context.Context, payload []byte) (transport.Response, error) {
+	grpcReq := &pb.GetStatsRequest{}
+	
+	grpcResp, err := c.client.GetStats(ctx, grpcReq)
+	if err != nil {
+		return transport.NewErrorResponse(err), err
+	}
+	
+	resp := struct {
+		KeyCount           int64   `json:"key_count"`
+		StorageSize        int64   `json:"storage_size"`
+		MemtableCount      int32   `json:"memtable_count"`
+		SstableCount       int32   `json:"sstable_count"`
+		WriteAmplification float64 `json:"write_amplification"`
+		ReadAmplification  float64 `json:"read_amplification"`
+	}{
+		KeyCount:           grpcResp.KeyCount,
+		StorageSize:        grpcResp.StorageSize,
+		MemtableCount:      grpcResp.MemtableCount,
+		SstableCount:       grpcResp.SstableCount,
+		WriteAmplification: grpcResp.WriteAmplification,
+		ReadAmplification:  grpcResp.ReadAmplification,
+	}
+	
+	respData, err := json.Marshal(resp)
+	if err != nil {
+		return transport.NewErrorResponse(err), err
+	}
+	
+	return transport.NewResponse(transport.TypeGetStats, respData, nil), nil
+}
+
+func (c *GRPCClient) handleCompact(ctx context.Context, payload []byte) (transport.Response, error) {
+	var req struct {
+		Force bool `json:"force"`
+	}
+	
+	if err := json.Unmarshal(payload, &req); err != nil {
+		return transport.NewErrorResponse(fmt.Errorf("invalid compact request payload: %w", err)), err
+	}
+	
+	grpcReq := &pb.CompactRequest{
+		Force: req.Force,
+	}
+	
+	grpcResp, err := c.client.Compact(ctx, grpcReq)
+	if err != nil {
+		return transport.NewErrorResponse(err), err
+	}
+	
+	resp := struct {
+		Success bool `json:"success"`
+	}{
+		Success: grpcResp.Success,
+	}
+	
+	respData, err := json.Marshal(resp)
+	if err != nil {
+		return transport.NewErrorResponse(err), err
+	}
+	
+	return transport.NewResponse(transport.TypeCompact, respData, nil), nil
+}
+
+// GRPCScanStream implements the transport.Stream interface for scan operations
+type GRPCScanStream struct {
+	ctx        context.Context
+	cancel     context.CancelFunc
+	stream     pb.KevoService_ScanClient
+	client     *GRPCClient
+	streamType string
+}
+
+func (s *GRPCScanStream) Send(request transport.Request) error {
+	return fmt.Errorf("sending to scan stream not supported")
+}
+
+func (s *GRPCScanStream) Recv() (transport.Response, error) {
+	resp, err := s.stream.Recv()
+	if err != nil {
+		if err == io.EOF {
+			return nil, io.EOF
+		}
+		return transport.NewErrorResponse(err), err
+	}
+	
+	// Build response based on scan type
+	scanResp := struct {
+		Key   []byte `json:"key"`
+		Value []byte `json:"value"`
+	}{
+		Key:   resp.Key,
+		Value: resp.Value,
+	}
+	
+	respData, err := json.Marshal(scanResp)
+	if err != nil {
+		return transport.NewErrorResponse(err), err
+	}
+	
+	s.client.metrics.RecordReceive(len(respData))
+	return transport.NewResponse(s.streamType, respData, nil), nil
+}
+
+func (s *GRPCScanStream) Close() error {
+	s.cancel()
+	return nil
+}

pkg/grpc/transport/grpc_transport.go

@@ -0,0 +1,287 @@
+package transport
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"sync"
+	"time"
+
+	pb "github.com/KevoDB/kevo/proto/kevo"
+	"github.com/KevoDB/kevo/pkg/transport"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials"
+	"google.golang.org/grpc/credentials/insecure"
+	"google.golang.org/grpc/keepalive"
+)
+
+// Constants for default timeout values
+const (
+	defaultDialTimeout     = 5 * time.Second
+	defaultConnectTimeout  = 5 * time.Second
+	defaultKeepAliveTime   = 15 * time.Second
+	defaultKeepAlivePolicy = 5 * time.Second
+	defaultMaxConnIdle     = 60 * time.Second
+	defaultMaxConnAge      = 5 * time.Minute
+)
+
+// GRPCTransportManager manages gRPC connections
+type GRPCTransportManager struct {
+	opts        *GRPCTransportOptions
+	server      *grpc.Server
+	listener    net.Listener
+	connections sync.Map // map[string]*grpc.ClientConn
+	mu          sync.RWMutex
+	metrics     *transport.ExtendedMetricsCollector
+}
+
+// Ensure GRPCTransportManager implements TransportManager
+var _ transport.TransportManager = (*GRPCTransportManager)(nil)
+
+// DefaultGRPCTransportOptions returns default transport options
+func DefaultGRPCTransportOptions() *GRPCTransportOptions {
+	return &GRPCTransportOptions{
+		ListenAddr:        ":50051",
+		ConnectionTimeout: defaultConnectTimeout,
+		DialTimeout:       defaultDialTimeout,
+		KeepAliveTime:     defaultKeepAliveTime,
+		KeepAliveTimeout:  defaultKeepAlivePolicy,
+		MaxConnectionIdle: defaultMaxConnIdle,
+		MaxConnectionAge:  defaultMaxConnAge,
+	}
+}
+
+// NewGRPCTransportManager creates a new gRPC transport manager
+func NewGRPCTransportManager(opts *GRPCTransportOptions) (*GRPCTransportManager, error) {
+	if opts == nil {
+		opts = DefaultGRPCTransportOptions()
+	}
+
+	metrics := transport.NewMetrics("grpc")
+
+	return &GRPCTransportManager{
+		opts:    opts,
+		metrics: metrics,
+	}, nil
+}
+
+// Start starts the gRPC server
+// Serve starts the server and blocks until it's stopped
+func (g *GRPCTransportManager) Serve() error {
+	ctx := context.Background()
+	if err := g.Start(); err != nil {
+		return err
+	}
+	
+	// Block until server is stopped
+	<-ctx.Done()
+	return nil
+}
+
+// Start starts the server and returns immediately
+func (g *GRPCTransportManager) Start() error {
+	g.mu.Lock()
+	defer g.mu.Unlock()
+
+	if g.server != nil {
+		return fmt.Errorf("gRPC transport already started")
+	}
+
+	var serverOpts []grpc.ServerOption
+
+	// Configure TLS if provided
+	if g.opts.TLSConfig != nil {
+		serverOpts = append(serverOpts, grpc.Creds(credentials.NewTLS(g.opts.TLSConfig)))
+	}
+
+	// Configure keepalive parameters
+	kaProps := keepalive.ServerParameters{
+		MaxConnectionIdle: g.opts.MaxConnectionIdle,
+		MaxConnectionAge:  g.opts.MaxConnectionAge,
+		Time:              g.opts.KeepAliveTime,
+		Timeout:           g.opts.KeepAliveTimeout,
+	}
+	kaPolicy := keepalive.EnforcementPolicy{
+		MinTime:             g.opts.KeepAliveTime / 2,
+		PermitWithoutStream: true,
+	}
+	serverOpts = append(serverOpts,
+		grpc.KeepaliveParams(kaProps),
+		grpc.KeepaliveEnforcementPolicy(kaPolicy),
+	)
+
+	// Create and start the gRPC server
+	g.server = grpc.NewServer(serverOpts...)
+
+	// Start listening
+	listener, err := net.Listen("tcp", g.opts.ListenAddr)
+	if err != nil {
+		return fmt.Errorf("failed to listen on %s: %w", g.opts.ListenAddr, err)
+	}
+	g.listener = listener
+
+	// Start server in a goroutine
+	go func() {
+		g.metrics.ServerStarted()
+		if err := g.server.Serve(listener); err != nil {
+			g.metrics.ServerErrored()
+			// Just log the error, as this is running in a goroutine
+			fmt.Printf("gRPC server stopped: %v\n", err)
+		}
+	}()
+
+	return nil
+}
+
+// Stop stops the gRPC server
+func (g *GRPCTransportManager) Stop(ctx context.Context) error {
+	g.mu.Lock()
+	defer g.mu.Unlock()
+
+	if g.server == nil {
+		return nil
+	}
+
+	// Close all client connections
+	g.connections.Range(func(key, value interface{}) bool {
+		conn := value.(*grpc.ClientConn)
+		conn.Close()
+		g.connections.Delete(key)
+		return true
+	})
+
+	// Gracefully stop the server
+	stopped := make(chan struct{})
+	go func() {
+		g.server.GracefulStop()
+		close(stopped)
+	}()
+
+	// Wait for graceful stop or context deadline
+	select {
+	case <-stopped:
+		// Server stopped gracefully
+	case <-ctx.Done():
+		// Context deadline exceeded, force stop
+		g.server.Stop()
+	}
+
+	g.metrics.ServerStopped()
+	g.server = nil
+	return nil
+}
+
+// Connect creates a connection to the specified address
+func (g *GRPCTransportManager) Connect(ctx context.Context, address string) (transport.Connection, error) {
+	g.mu.RLock()
+	defer g.mu.RUnlock()
+
+	// Check if we already have a connection to this address
+	if conn, ok := g.connections.Load(address); ok {
+		return &GRPCConnection{
+			conn:     conn.(*grpc.ClientConn),
+			address:  address,
+			metrics:  g.metrics,
+			lastUsed: time.Now(),
+		}, nil
+	}
+
+	// Set connection options
+	dialOptions := []grpc.DialOption{
+		grpc.WithBlock(),
+	}
+
+	// Add TLS if configured
+	if g.opts.TLSConfig != nil {
+		dialOptions = append(dialOptions, grpc.WithTransportCredentials(
+			credentials.NewTLS(g.opts.TLSConfig),
+		))
+	} else {
+		dialOptions = append(dialOptions, grpc.WithTransportCredentials(insecure.NewCredentials()))
+	}
+
+	// Add keepalive options
+	dialOptions = append(dialOptions, grpc.WithKeepaliveParams(keepalive.ClientParameters{
+		Time:                g.opts.KeepAliveTime,
+		Timeout:             g.opts.KeepAliveTimeout,
+		PermitWithoutStream: true,
+	}))
+
+	// Connect with timeout
+	dialCtx, cancel := context.WithTimeout(ctx, g.opts.DialTimeout)
+	defer cancel()
+
+	// Dial the server
+	conn, err := grpc.DialContext(dialCtx, address, dialOptions...)
+	if err != nil {
+		g.metrics.ConnectionFailed()
+		return nil, fmt.Errorf("failed to connect to %s: %w", address, err)
+	}
+
+	// Store the connection
+	g.connections.Store(address, conn)
+	g.metrics.ConnectionOpened()
+
+	return &GRPCConnection{
+		conn:     conn,
+		address:  address,
+		metrics:  g.metrics,
+		lastUsed: time.Now(),
+	}, nil
+}
+
+// SetRequestHandler sets the request handler for the server
+func (g *GRPCTransportManager) SetRequestHandler(handler transport.RequestHandler) {
+	// This would be implemented in a real server
+}
+
+// RegisterService registers a service with the gRPC server
+func (g *GRPCTransportManager) RegisterService(service interface{}) error {
+	g.mu.Lock()
+	defer g.mu.Unlock()
+
+	if g.server == nil {
+		return fmt.Errorf("server not started, cannot register service")
+	}
+
+	// Type assert to KevoServiceServer and register
+	kevoService, ok := service.(pb.KevoServiceServer)
+	if !ok {
+		return fmt.Errorf("service is not a valid KevoServiceServer implementation")
+	}
+
+	pb.RegisterKevoServiceServer(g.server, kevoService)
+	return nil
+}
+
+// Register the transport with the registry
+func init() {
+	transport.RegisterServerTransport("grpc", func(address string, options transport.TransportOptions) (transport.Server, error) {
+		// Convert the generic options to our specific options
+		grpcOpts := &GRPCTransportOptions{
+			ListenAddr:        address,
+			TLSConfig:         nil, // We'll set this up if TLS is enabled
+			ConnectionTimeout: options.Timeout,
+			DialTimeout:       options.Timeout,
+			KeepAliveTime:     defaultKeepAliveTime,
+			KeepAliveTimeout:  defaultKeepAlivePolicy,
+			MaxConnectionIdle: defaultMaxConnIdle,
+			MaxConnectionAge:  defaultMaxConnAge,
+		}
+
+		// Set up TLS if enabled
+		if options.TLSEnabled && options.CertFile != "" && options.KeyFile != "" {
+			tlsConfig, err := LoadServerTLSConfig(options.CertFile, options.KeyFile, options.CAFile)
+			if err != nil {
+				return nil, fmt.Errorf("failed to load TLS config: %w", err)
+			}
+			grpcOpts.TLSConfig = tlsConfig
+		}
+
+		return NewGRPCTransportManager(grpcOpts)
+	})
+
+	transport.RegisterClientTransport("grpc", func(endpoint string, options transport.TransportOptions) (transport.Client, error) {
+		return NewGRPCClient(endpoint, options)
+	})
+}

pkg/grpc/transport/grpc_transport_test.go

@@ -0,0 +1,63 @@
+package transport
+
+import (
+	"testing"
+)
+
+// Simple smoke test for the gRPC transport
+func TestNewGRPCTransportManager(t *testing.T) {
+	opts := DefaultGRPCTransportOptions()
+	
+	// Override the listen address to avoid port conflicts
+	opts.ListenAddr = ":0" // use random available port
+	
+	manager, err := NewGRPCTransportManager(opts)
+	if err != nil {
+		t.Fatalf("Failed to create transport manager: %v", err)
+	}
+	
+	// Verify the manager was created
+	if manager == nil {
+		t.Fatal("Expected non-nil manager")
+	}
+}
+
+// Test for the server TLS configuration
+func TestLoadServerTLSConfig(t *testing.T) {
+	// Skip actual loading, just test validation
+	_, err := LoadServerTLSConfig("", "", "")
+	if err == nil {
+		t.Fatal("Expected error for empty cert/key")
+	}
+}
+
+// Test for the client TLS configuration
+func TestLoadClientTLSConfig(t *testing.T) {
+	// Test with insecure config
+	config, err := LoadClientTLSConfig("", "", "", true)
+	if err != nil {
+		t.Fatalf("Failed to create insecure TLS config: %v", err)
+	}
+	if config == nil {
+		t.Fatal("Expected non-nil TLS config")
+	}
+	if !config.InsecureSkipVerify {
+		t.Fatal("Expected InsecureSkipVerify to be true")
+	}
+}
+
+// Skip actual TLS certificate loading by providing empty values
+func TestLoadClientTLSConfigFromStruct(t *testing.T) {
+	config, err := LoadClientTLSConfigFromStruct(&TLSConfig{
+		SkipVerify: true,
+	})
+	if err != nil {
+		t.Fatalf("Failed to create TLS config from struct: %v", err)
+	}
+	if config == nil {
+		t.Fatal("Expected non-nil TLS config")
+	}
+	if !config.InsecureSkipVerify {
+		t.Fatal("Expected InsecureSkipVerify to be true")
+	}
+}

pkg/grpc/transport/pool.go

@@ -0,0 +1,210 @@
+package transport
+
+import (
+	"context"
+	"errors"
+	"sync"
+	"time"
+)
+
+var (
+	ErrPoolClosed      = errors.New("connection pool is closed")
+	ErrPoolFull        = errors.New("connection pool is full")
+	ErrPoolEmptyNoWait = errors.New("connection pool is empty")
+)
+
+// ConnectionPool manages a pool of gRPC connections
+type ConnectionPool struct {
+	manager    *GRPCTransportManager
+	address    string
+	maxIdle    int
+	maxActive  int
+	idlePool   chan *GRPCConnection
+	activePool chan struct{}
+	mu         sync.Mutex
+	closed     bool
+	idleTime   time.Duration
+}
+
+// NewConnectionPool creates a new connection pool
+func NewConnectionPool(manager *GRPCTransportManager, address string, maxIdle, maxActive int, idleTime time.Duration) *ConnectionPool {
+	if maxIdle <= 0 {
+		maxIdle = 2
+	}
+	if maxActive <= 0 {
+		maxActive = 10
+	}
+	if idleTime <= 0 {
+		idleTime = 5 * time.Minute
+	}
+
+	pool := &ConnectionPool{
+		manager:    manager,
+		address:    address,
+		maxIdle:    maxIdle,
+		maxActive:  maxActive,
+		idlePool:   make(chan *GRPCConnection, maxIdle),
+		activePool: make(chan struct{}, maxActive),
+		idleTime:   idleTime,
+	}
+
+	return pool
+}
+
+// Get retrieves a connection from the pool or creates a new one
+func (p *ConnectionPool) Get(ctx context.Context, wait bool) (*GRPCConnection, error) {
+	p.mu.Lock()
+	if p.closed {
+		p.mu.Unlock()
+		return nil, ErrPoolClosed
+	}
+	p.mu.Unlock()
+
+	// Try to get an idle connection
+	select {
+	case conn := <-p.idlePool:
+		return conn, nil
+	default:
+		// No idle connections available
+	}
+
+	// Check if we can create a new connection
+	select {
+	case p.activePool <- struct{}{}:
+		// We acquired a slot to create a new connection
+		conn, err := p.createConnection(ctx)
+		if err != nil {
+			// If connection creation fails, release the active slot
+			<-p.activePool
+			return nil, err
+		}
+		return conn, nil
+	default:
+		// Pool is full, check if we should wait
+		if !wait {
+			return nil, ErrPoolEmptyNoWait
+		}
+	}
+
+	// Wait for a connection to become available or context to expire
+	select {
+	case conn := <-p.idlePool:
+		// Got an idle connection
+		return conn, nil
+	case p.activePool <- struct{}{}:
+		// Got permission to create a new connection
+		conn, err := p.createConnection(ctx)
+		if err != nil {
+			<-p.activePool
+			return nil, err
+		}
+		return conn, nil
+	case <-ctx.Done():
+		// Context deadline exceeded or canceled
+		return nil, ctx.Err()
+	}
+}
+
+// createConnection creates a new connection to the server
+func (p *ConnectionPool) createConnection(ctx context.Context) (*GRPCConnection, error) {
+	conn, err := p.manager.Connect(ctx, p.address)
+	if err != nil {
+		return nil, err
+	}
+
+	// Convert to our internal type
+	grpcConn, ok := conn.(*GRPCConnection)
+	if !ok {
+		conn.Close()
+		return nil, errors.New("invalid connection type")
+	}
+
+	return grpcConn, nil
+}
+
+// Put returns a connection to the pool
+func (p *ConnectionPool) Put(conn *GRPCConnection) error {
+	p.mu.Lock()
+	if p.closed {
+		p.mu.Unlock()
+		conn.Close() // Close the connection since the pool is closed
+		<-p.activePool
+		return nil
+	}
+	p.mu.Unlock()
+
+	// Try to add to the idle pool
+	select {
+	case p.idlePool <- conn:
+		// Successfully returned to idle pool
+		return nil
+	default:
+		// Idle pool full, close the connection
+		conn.Close()
+		<-p.activePool
+		return nil
+	}
+}
+
+// Close closes the connection pool and all idle connections
+func (p *ConnectionPool) Close() error {
+	p.mu.Lock()
+	defer p.mu.Unlock()
+
+	if p.closed {
+		return ErrPoolClosed
+	}
+
+	p.closed = true
+
+	// Close all idle connections
+	close(p.idlePool)
+	for conn := range p.idlePool {
+		conn.Close()
+		<-p.activePool
+	}
+
+	return nil
+}
+
+// ConnectionPoolManager manages multiple connection pools
+type ConnectionPoolManager struct {
+	manager          *GRPCTransportManager
+	pools            sync.Map // map[string]*ConnectionPool
+	defaultMaxIdle   int
+	defaultMaxActive int
+	defaultIdleTime  time.Duration
+}
+
+// NewConnectionPoolManager creates a new connection pool manager
+func NewConnectionPoolManager(manager *GRPCTransportManager, maxIdle, maxActive int, idleTime time.Duration) *ConnectionPoolManager {
+	return &ConnectionPoolManager{
+		manager:          manager,
+		defaultMaxIdle:   maxIdle,
+		defaultMaxActive: maxActive,
+		defaultIdleTime:  idleTime,
+	}
+}
+
+// GetPool gets or creates a connection pool for the given address
+func (m *ConnectionPoolManager) GetPool(address string) *ConnectionPool {
+	// Check if pool exists
+	if pool, ok := m.pools.Load(address); ok {
+		return pool.(*ConnectionPool)
+	}
+
+	// Create new pool
+	pool := NewConnectionPool(m.manager, address, m.defaultMaxIdle, m.defaultMaxActive, m.defaultIdleTime)
+	m.pools.Store(address, pool)
+	return pool
+}
+
+// CloseAll closes all connection pools
+func (m *ConnectionPoolManager) CloseAll() {
+	m.pools.Range(func(key, value interface{}) bool {
+		pool := value.(*ConnectionPool)
+		pool.Close()
+		m.pools.Delete(key)
+		return true
+	})
+}

pkg/grpc/transport/server.go

@@ -0,0 +1,154 @@
+package transport
+
+import (
+	"context"
+	"crypto/tls"
+	"fmt"
+	"sync"
+	"time"
+
+	pb "github.com/KevoDB/kevo/proto/kevo"
+	"github.com/KevoDB/kevo/pkg/transport"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials"
+	"google.golang.org/grpc/keepalive"
+)
+
+// GRPCServer implements the transport.Server interface for gRPC
+type GRPCServer struct {
+	address       string
+	tlsConfig     *tls.Config
+	server        *grpc.Server
+	requestHandler transport.RequestHandler
+	started       bool
+	mu            sync.Mutex
+	metrics       *transport.ExtendedMetricsCollector
+}
+
+// NewGRPCServer creates a new gRPC server
+func NewGRPCServer(address string, options transport.TransportOptions) (transport.Server, error) {
+	// Create server options
+	var serverOpts []grpc.ServerOption
+	
+	// Configure TLS if enabled
+	if options.TLSEnabled {
+		tlsConfig, err := LoadServerTLSConfig(options.CertFile, options.KeyFile, options.CAFile)
+		if err != nil {
+			return nil, fmt.Errorf("failed to load TLS config: %w", err)
+		}
+		
+		serverOpts = append(serverOpts, grpc.Creds(credentials.NewTLS(tlsConfig)))
+	}
+	
+	// Configure keepalive parameters
+	kaProps := keepalive.ServerParameters{
+		MaxConnectionIdle: 30 * time.Minute,
+		MaxConnectionAge:  5 * time.Minute,
+		Time:              15 * time.Second,
+		Timeout:           5 * time.Second,
+	}
+	
+	kaPolicy := keepalive.EnforcementPolicy{
+		MinTime:             10 * time.Second,
+		PermitWithoutStream: true,
+	}
+	
+	serverOpts = append(serverOpts,
+		grpc.KeepaliveParams(kaProps),
+		grpc.KeepaliveEnforcementPolicy(kaPolicy),
+	)
+	
+	// Create the server
+	server := grpc.NewServer(serverOpts...)
+	
+	return &GRPCServer{
+		address: address,
+		server:  server,
+		metrics: transport.NewMetrics("grpc"),
+	}, nil
+}
+
+// Start starts the server and returns immediately
+func (s *GRPCServer) Start() error {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	
+	if s.started {
+		return fmt.Errorf("server already started")
+	}
+	
+	// Start the server in a goroutine
+	go func() {
+		if err := s.Serve(); err != nil {
+			fmt.Printf("gRPC server error: %v\n", err)
+		}
+	}()
+	
+	s.started = true
+	return nil
+}
+
+// Serve starts the server and blocks until it's stopped
+func (s *GRPCServer) Serve() error {
+	if s.requestHandler == nil {
+		return fmt.Errorf("no request handler set")
+	}
+	
+	// Create the service implementation
+	service := &kevoServiceServer{
+		handler: s.requestHandler,
+	}
+	
+	// Register the service
+	pb.RegisterKevoServiceServer(s.server, service)
+	
+	// Start listening
+	listener, err := transport.CreateListener("tcp", s.address, s.tlsConfig)
+	if err != nil {
+		return fmt.Errorf("failed to listen on %s: %w", s.address, err)
+	}
+	
+	s.metrics.ServerStarted()
+	
+	// Serve requests
+	err = s.server.Serve(listener)
+	
+	if err != nil {
+		s.metrics.ServerErrored()
+		return fmt.Errorf("failed to serve: %w", err)
+	}
+	
+	s.metrics.ServerStopped()
+	return nil
+}
+
+// Stop stops the server gracefully
+func (s *GRPCServer) Stop(ctx context.Context) error {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	
+	if !s.started {
+		return nil
+	}
+	
+	s.server.GracefulStop()
+	s.started = false
+	
+	return nil
+}
+
+// SetRequestHandler sets the handler for incoming requests
+func (s *GRPCServer) SetRequestHandler(handler transport.RequestHandler) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	
+	s.requestHandler = handler
+}
+
+// kevoServiceServer implements the KevoService gRPC service
+type kevoServiceServer struct {
+	pb.UnimplementedKevoServiceServer
+	handler transport.RequestHandler
+}
+
+// TODO: Implement service methods

pkg/grpc/transport/tls.go

@@ -0,0 +1,95 @@
+package transport
+
+import (
+	"crypto/tls"
+	"crypto/x509"
+	"fmt"
+	"io/ioutil"
+)
+
+// TLSConfig holds TLS configuration settings
+type TLSConfig struct {
+	CertFile   string
+	KeyFile    string
+	CAFile     string
+	SkipVerify bool
+}
+
+// LoadServerTLSConfig loads TLS configuration for server
+func LoadServerTLSConfig(certFile, keyFile, caFile string) (*tls.Config, error) {
+	// Check if both cert and key files are provided
+	if certFile == "" || keyFile == "" {
+		return nil, fmt.Errorf("both certificate and key files must be provided")
+	}
+
+	// Load server certificate and key
+	cert, err := tls.LoadX509KeyPair(certFile, keyFile)
+	if err != nil {
+		return nil, fmt.Errorf("failed to load server key pair: %w", err)
+	}
+
+	tlsConfig := &tls.Config{
+		Certificates: []tls.Certificate{cert},
+		MinVersion:   tls.VersionTLS12,
+	}
+
+	// Load CA if provided for client authentication
+	if caFile != "" {
+		caBytes, err := ioutil.ReadFile(caFile)
+		if err != nil {
+			return nil, fmt.Errorf("failed to read CA certificate: %w", err)
+		}
+
+		certPool := x509.NewCertPool()
+		if !certPool.AppendCertsFromPEM(caBytes) {
+			return nil, fmt.Errorf("failed to parse CA certificate")
+		}
+
+		tlsConfig.ClientCAs = certPool
+		tlsConfig.ClientAuth = tls.RequireAndVerifyClientCert
+	}
+
+	return tlsConfig, nil
+}
+
+// LoadClientTLSConfig loads TLS configuration for client
+func LoadClientTLSConfig(certFile, keyFile, caFile string, skipVerify bool) (*tls.Config, error) {
+	tlsConfig := &tls.Config{
+		MinVersion:         tls.VersionTLS12,
+		InsecureSkipVerify: skipVerify,
+	}
+
+	// Load client certificate and key if provided
+	if certFile != "" && keyFile != "" {
+		cert, err := tls.LoadX509KeyPair(certFile, keyFile)
+		if err != nil {
+			return nil, fmt.Errorf("failed to load client key pair: %w", err)
+		}
+		tlsConfig.Certificates = []tls.Certificate{cert}
+	}
+
+	// Load CA if provided for server authentication
+	if caFile != "" {
+		caBytes, err := ioutil.ReadFile(caFile)
+		if err != nil {
+			return nil, fmt.Errorf("failed to read CA certificate: %w", err)
+		}
+
+		certPool := x509.NewCertPool()
+		if !certPool.AppendCertsFromPEM(caBytes) {
+			return nil, fmt.Errorf("failed to parse CA certificate")
+		}
+
+		tlsConfig.RootCAs = certPool
+	}
+
+	return tlsConfig, nil
+}
+
+// LoadClientTLSConfigFromStruct is a convenience method to load TLS config from TLSConfig struct
+func LoadClientTLSConfigFromStruct(config *TLSConfig) (*tls.Config, error) {
+	if config == nil {
+		return &tls.Config{MinVersion: tls.VersionTLS12}, nil
+	}
+	return LoadClientTLSConfig(config.CertFile, config.KeyFile, config.CAFile, config.SkipVerify)
+}

pkg/grpc/transport/types.go

@@ -0,0 +1,84 @@
+package transport
+
+import (
+	"crypto/tls"
+	"sync"
+	"time"
+
+	pb "github.com/KevoDB/kevo/proto/kevo"
+	"github.com/KevoDB/kevo/pkg/transport"
+	"google.golang.org/grpc"
+)
+
+// GRPCConnection implements the transport.Connection interface for gRPC connections
+type GRPCConnection struct {
+	conn     *grpc.ClientConn
+	address  string
+	metrics  *transport.ExtendedMetricsCollector
+	lastUsed time.Time
+	mu       sync.RWMutex
+	reqCount int
+	errCount int
+}
+
+// Execute runs a function with the gRPC client
+func (c *GRPCConnection) Execute(fn func(interface{}) error) error {
+	c.mu.Lock()
+	c.lastUsed = time.Now()
+	c.reqCount++
+	c.mu.Unlock()
+
+	// Create a new client from the connection
+	client := pb.NewKevoServiceClient(c.conn)
+	
+	// Execute the provided function with the client
+	err := fn(client)
+	
+	// Update metrics if there was an error
+	if err != nil {
+		c.mu.Lock()
+		c.errCount++
+		c.mu.Unlock()
+	}
+	
+	return err
+}
+
+// Close closes the gRPC connection
+func (c *GRPCConnection) Close() error {
+	return c.conn.Close()
+}
+
+// Address returns the endpoint address
+func (c *GRPCConnection) Address() string {
+	return c.address
+}
+
+// Status returns the current connection status
+func (c *GRPCConnection) Status() transport.ConnectionStatus {
+	c.mu.RLock()
+	defer c.mu.RUnlock()
+	
+	// Check the connection state
+	isConnected := c.conn != nil
+	
+	return transport.ConnectionStatus{
+		Connected:    isConnected,
+		LastActivity: c.lastUsed,
+		ErrorCount:   c.errCount,
+		RequestCount: c.reqCount,
+	}
+}
+
+// GRPCTransportOptions configuration for gRPC transport
+type GRPCTransportOptions struct {
+	ListenAddr         string
+	TLSConfig          *tls.Config
+	ConnectionTimeout  time.Duration
+	DialTimeout        time.Duration
+	KeepAliveTime      time.Duration
+	KeepAliveTimeout   time.Duration
+	MaxConnectionIdle  time.Duration
+	MaxConnectionAge   time.Duration
+	MaxPoolConnections int
+}

pkg/iterator/hierarchical_iterator.go

@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"sync"
 
-	"github.com/jeremytregunna/kevo/pkg/common/iterator"
+	"github.com/KevoDB/kevo/pkg/common/iterator"
 )
 
 // HierarchicalIterator implements an iterator that follows the LSM-tree hierarchy

pkg/memtable/mempool.go

@@ -5,7 +5,7 @@ import (
 	"sync/atomic"
 	"time"
 
-	"github.com/jeremytregunna/kevo/pkg/config"
+	"github.com/KevoDB/kevo/pkg/config"
 )
 
 // MemTablePool manages a pool of MemTables

pkg/memtable/mempool_test.go

@@ -4,7 +4,7 @@ import (
 	"testing"
 	"time"
 
-	"github.com/jeremytregunna/kevo/pkg/config"
+	"github.com/KevoDB/kevo/pkg/config"
 )
 
 func createTestConfig() *config.Config {

pkg/memtable/memtable.go

@@ -5,7 +5,7 @@ import (
 	"sync/atomic"
 	"time"
 
-	"github.com/jeremytregunna/kevo/pkg/wal"
+	"github.com/KevoDB/kevo/pkg/wal"
 )
 
 // MemTable is an in-memory table that stores key-value pairs

pkg/memtable/memtable_test.go

@@ -4,7 +4,7 @@ import (
 	"testing"
 	"time"
 
-	"github.com/jeremytregunna/kevo/pkg/wal"
+	"github.com/KevoDB/kevo/pkg/wal"
 )
 
 func TestMemTableBasicOperations(t *testing.T) {

pkg/memtable/recovery.go

@@ -3,8 +3,8 @@ package memtable
 import (
 	"fmt"
 
-	"github.com/jeremytregunna/kevo/pkg/config"
-	"github.com/jeremytregunna/kevo/pkg/wal"
+	"github.com/KevoDB/kevo/pkg/config"
+	"github.com/KevoDB/kevo/pkg/wal"
 )
 
 // RecoveryOptions contains options for MemTable recovery

pkg/memtable/recovery_test.go

@@ -4,8 +4,8 @@ import (
 	"os"
 	"testing"
 
-	"github.com/jeremytregunna/kevo/pkg/config"
-	"github.com/jeremytregunna/kevo/pkg/wal"
+	"github.com/KevoDB/kevo/pkg/config"
+	"github.com/KevoDB/kevo/pkg/wal"
 )
 
 func setupTestWAL(t *testing.T) (string, *wal.WAL, func()) {

pkg/sstable/iterator.go

@@ -5,7 +5,7 @@ import (
 	"fmt"
 	"sync"
 
-	"github.com/jeremytregunna/kevo/pkg/sstable/block"
+	"github.com/KevoDB/kevo/pkg/sstable/block"
 )
 
 // Iterator iterates over key-value pairs in an SSTable

pkg/sstable/reader.go

@@ -7,8 +7,8 @@ import (
 	"os"
 	"sync"
 
-	"github.com/jeremytregunna/kevo/pkg/sstable/block"
-	"github.com/jeremytregunna/kevo/pkg/sstable/footer"
+	"github.com/KevoDB/kevo/pkg/sstable/block"
+	"github.com/KevoDB/kevo/pkg/sstable/footer"
 )
 
 // IOManager handles file I/O operations for SSTable

pkg/sstable/sstable.go

@@ -3,7 +3,7 @@ package sstable
 import (
 	"errors"
 
-	"github.com/jeremytregunna/kevo/pkg/sstable/block"
+	"github.com/KevoDB/kevo/pkg/sstable/block"
 )
 
 const (

pkg/sstable/writer.go

@@ -7,8 +7,8 @@ import (
 	"os"
 	"path/filepath"
 
-	"github.com/jeremytregunna/kevo/pkg/sstable/block"
-	"github.com/jeremytregunna/kevo/pkg/sstable/footer"
+	"github.com/KevoDB/kevo/pkg/sstable/block"
+	"github.com/KevoDB/kevo/pkg/sstable/footer"
 )
 
 // FileManager handles file operations for SSTable writing

pkg/transaction/creator.go

@@ -1,7 +1,7 @@
 package transaction
 
 import (
-	"github.com/jeremytregunna/kevo/pkg/engine"
+	"github.com/KevoDB/kevo/pkg/engine"
 )
 
 // TransactionCreatorImpl implements the engine.TransactionCreator interface

pkg/transaction/example_test.go

@@ -4,9 +4,9 @@ import (
 	"fmt"
 	"os"
 
-	"github.com/jeremytregunna/kevo/pkg/engine"
-	"github.com/jeremytregunna/kevo/pkg/transaction"
-	"github.com/jeremytregunna/kevo/pkg/wal"
+	"github.com/KevoDB/kevo/pkg/engine"
+	"github.com/KevoDB/kevo/pkg/transaction"
+	"github.com/KevoDB/kevo/pkg/wal"
 )
 
 // Disable all logs in tests

pkg/transaction/transaction.go

@@ -1,7 +1,7 @@
 package transaction
 
 import (
-	"github.com/jeremytregunna/kevo/pkg/common/iterator"
+	"github.com/KevoDB/kevo/pkg/common/iterator"
 )
 
 // TransactionMode defines the transaction access mode (ReadOnly or ReadWrite)

pkg/transaction/transaction_test.go

@@ -5,7 +5,7 @@ import (
 	"os"
 	"testing"
 
-	"github.com/jeremytregunna/kevo/pkg/engine"
+	"github.com/KevoDB/kevo/pkg/engine"
 )
 
 func setupTestEngine(t *testing.T) (*engine.Engine, string) {

pkg/transaction/tx_impl.go

@@ -6,10 +6,10 @@ import (
 	"sync"
 	"sync/atomic"
 
-	"github.com/jeremytregunna/kevo/pkg/common/iterator"
-	"github.com/jeremytregunna/kevo/pkg/engine"
-	"github.com/jeremytregunna/kevo/pkg/transaction/txbuffer"
-	"github.com/jeremytregunna/kevo/pkg/wal"
+	"github.com/KevoDB/kevo/pkg/common/iterator"
+	"github.com/KevoDB/kevo/pkg/engine"
+	"github.com/KevoDB/kevo/pkg/transaction/txbuffer"
+	"github.com/KevoDB/kevo/pkg/wal"
 )
 
 // Common errors for transaction operations

pkg/transaction/tx_test.go

@@ -5,7 +5,7 @@ import (
 	"os"
 	"testing"
 
-	"github.com/jeremytregunna/kevo/pkg/engine"
+	"github.com/KevoDB/kevo/pkg/engine"
 )
 
 func setupTest(t *testing.T) (*engine.Engine, func()) {

pkg/transport/common.go

@@ -0,0 +1,100 @@
+package transport
+
+import (
+	"errors"
+)
+
+// Standard request/response type constants
+const (
+	TypeGet           = "get"
+	TypePut           = "put"
+	TypeDelete        = "delete"
+	TypeBatchWrite    = "batch_write"
+	TypeScan          = "scan"
+	TypeBeginTx       = "begin_tx"
+	TypeCommitTx      = "commit_tx"
+	TypeRollbackTx    = "rollback_tx"
+	TypeTxGet         = "tx_get"
+	TypeTxPut         = "tx_put"
+	TypeTxDelete      = "tx_delete"
+	TypeTxScan        = "tx_scan"
+	TypeGetStats      = "get_stats"
+	TypeCompact       = "compact"
+	TypeError         = "error"
+)
+
+// Common errors
+var (
+	ErrInvalidRequest = errors.New("invalid request")
+	ErrInvalidPayload = errors.New("invalid payload")
+	ErrNotConnected   = errors.New("not connected to server")
+	ErrTimeout        = errors.New("operation timed out")
+)
+
+// BasicRequest implements the Request interface
+type BasicRequest struct {
+	RequestType string
+	RequestData []byte
+}
+
+// Type returns the type of the request
+func (r *BasicRequest) Type() string {
+	return r.RequestType
+}
+
+// Payload returns the payload of the request
+func (r *BasicRequest) Payload() []byte {
+	return r.RequestData
+}
+
+// NewRequest creates a new request with the given type and payload
+func NewRequest(requestType string, data []byte) Request {
+	return &BasicRequest{
+		RequestType: requestType,
+		RequestData: data,
+	}
+}
+
+// BasicResponse implements the Response interface
+type BasicResponse struct {
+	ResponseType string
+	ResponseData []byte
+	ResponseErr  error
+}
+
+// Type returns the type of the response
+func (r *BasicResponse) Type() string {
+	return r.ResponseType
+}
+
+// Payload returns the payload of the response
+func (r *BasicResponse) Payload() []byte {
+	return r.ResponseData
+}
+
+// Error returns any error associated with the response
+func (r *BasicResponse) Error() error {
+	return r.ResponseErr
+}
+
+// NewResponse creates a new response with the given type, payload, and error
+func NewResponse(responseType string, data []byte, err error) Response {
+	return &BasicResponse{
+		ResponseType: responseType,
+		ResponseData: data,
+		ResponseErr:  err,
+	}
+}
+
+// NewErrorResponse creates a new error response
+func NewErrorResponse(err error) Response {
+	var msg []byte
+	if err != nil {
+		msg = []byte(err.Error())
+	}
+	return &BasicResponse{
+		ResponseType: TypeError,
+		ResponseData: msg,
+		ResponseErr:  err,
+	}
+}

pkg/transport/common_test.go

@@ -0,0 +1,87 @@
+package transport
+
+import (
+	"errors"
+	"testing"
+)
+
+func TestBasicRequest(t *testing.T) {
+	// Test creating a request
+	payload := []byte("test payload")
+	req := NewRequest(TypeGet, payload)
+	
+	// Test Type method
+	if req.Type() != TypeGet {
+		t.Errorf("Expected type %s, got %s", TypeGet, req.Type())
+	}
+	
+	// Test Payload method
+	if string(req.Payload()) != string(payload) {
+		t.Errorf("Expected payload %s, got %s", string(payload), string(req.Payload()))
+	}
+}
+
+func TestBasicResponse(t *testing.T) {
+	// Test creating a response with no error
+	payload := []byte("test response")
+	resp := NewResponse(TypeGet, payload, nil)
+	
+	// Test Type method
+	if resp.Type() != TypeGet {
+		t.Errorf("Expected type %s, got %s", TypeGet, resp.Type())
+	}
+	
+	// Test Payload method
+	if string(resp.Payload()) != string(payload) {
+		t.Errorf("Expected payload %s, got %s", string(payload), string(resp.Payload()))
+	}
+	
+	// Test Error method
+	if resp.Error() != nil {
+		t.Errorf("Expected nil error, got %v", resp.Error())
+	}
+	
+	// Test creating a response with an error
+	testErr := errors.New("test error")
+	resp = NewResponse(TypeGet, payload, testErr)
+	
+	if resp.Error() != testErr {
+		t.Errorf("Expected error %v, got %v", testErr, resp.Error())
+	}
+}
+
+func TestNewErrorResponse(t *testing.T) {
+	// Test creating an error response
+	testErr := errors.New("test error")
+	resp := NewErrorResponse(testErr)
+	
+	// Test Type method
+	if resp.Type() != TypeError {
+		t.Errorf("Expected type %s, got %s", TypeError, resp.Type())
+	}
+	
+	// Test Payload method - should contain error message
+	if string(resp.Payload()) != testErr.Error() {
+		t.Errorf("Expected payload %s, got %s", testErr.Error(), string(resp.Payload()))
+	}
+	
+	// Test Error method
+	if resp.Error() != testErr {
+		t.Errorf("Expected error %v, got %v", testErr, resp.Error())
+	}
+	
+	// Test with nil error
+	resp = NewErrorResponse(nil)
+	
+	if resp.Type() != TypeError {
+		t.Errorf("Expected type %s, got %s", TypeError, resp.Type())
+	}
+	
+	if len(resp.Payload()) != 0 {
+		t.Errorf("Expected empty payload, got %s", string(resp.Payload()))
+	}
+	
+	if resp.Error() != nil {
+		t.Errorf("Expected nil error, got %v", resp.Error())
+	}
+}

pkg/transport/interface.go

@@ -0,0 +1,149 @@
+package transport
+
+import (
+	"context"
+	"time"
+)
+
+// CompressionType defines the compression algorithm used
+type CompressionType string
+
+// Standard compression options
+const (
+	CompressionNone   CompressionType = "none"
+	CompressionGzip   CompressionType = "gzip"
+	CompressionSnappy CompressionType = "snappy"
+)
+
+// RetryPolicy defines how retries are handled
+type RetryPolicy struct {
+	MaxRetries     int
+	InitialBackoff time.Duration
+	MaxBackoff     time.Duration
+	BackoffFactor  float64
+	Jitter         float64
+}
+
+// TransportOptions contains common configuration across all transport types
+type TransportOptions struct {
+	Timeout        time.Duration
+	RetryPolicy    RetryPolicy
+	Compression    CompressionType
+	MaxMessageSize int
+	TLSEnabled     bool
+	CertFile       string
+	KeyFile        string
+	CAFile         string
+}
+
+// TransportStatus contains information about the current transport state
+type TransportStatus struct {
+	Connected     bool
+	LastConnected time.Time
+	LastError     error
+	BytesSent     uint64
+	BytesReceived uint64
+	RTT           time.Duration
+}
+
+// Request represents a generic request to the transport layer
+type Request interface {
+	// Type returns the type of request
+	Type() string
+	
+	// Payload returns the payload of the request
+	Payload() []byte
+}
+
+// Response represents a generic response from the transport layer
+type Response interface {
+	// Type returns the type of response
+	Type() string
+	
+	// Payload returns the payload of the response
+	Payload() []byte
+	
+	// Error returns any error associated with the response
+	Error() error
+}
+
+// Stream represents a bidirectional stream of messages
+type Stream interface {
+	// Send sends a request over the stream
+	Send(request Request) error
+	
+	// Recv receives a response from the stream
+	Recv() (Response, error)
+	
+	// Close closes the stream
+	Close() error
+}
+
+// Client defines the client interface for any transport implementation
+type Client interface {
+	// Connect establishes a connection to the server
+	Connect(ctx context.Context) error
+	
+	// Close closes the connection
+	Close() error
+	
+	// IsConnected returns whether the client is connected
+	IsConnected() bool
+	
+	// Status returns the current status of the connection
+	Status() TransportStatus
+	
+	// Send sends a request and waits for a response
+	Send(ctx context.Context, request Request) (Response, error)
+	
+	// Stream opens a bidirectional stream
+	Stream(ctx context.Context) (Stream, error)
+}
+
+// RequestHandler processes incoming requests
+type RequestHandler interface {
+	// HandleRequest processes a request and returns a response
+	HandleRequest(ctx context.Context, request Request) (Response, error)
+	
+	// HandleStream processes a bidirectional stream
+	HandleStream(stream Stream) error
+}
+
+// Server defines the server interface for any transport implementation
+type Server interface {
+	// Start starts the server and returns immediately
+	Start() error
+	
+	// Serve starts the server and blocks until it's stopped
+	Serve() error
+	
+	// Stop stops the server gracefully
+	Stop(ctx context.Context) error
+	
+	// SetRequestHandler sets the handler for incoming requests
+	SetRequestHandler(handler RequestHandler)
+}
+
+// ClientFactory creates a new client
+type ClientFactory func(endpoint string, options TransportOptions) (Client, error)
+
+// ServerFactory creates a new server
+type ServerFactory func(address string, options TransportOptions) (Server, error)
+
+// Registry keeps track of available transport implementations
+type Registry interface {
+	// RegisterClient adds a new client implementation to the registry
+	RegisterClient(name string, factory ClientFactory)
+	
+	// RegisterServer adds a new server implementation to the registry
+	RegisterServer(name string, factory ServerFactory)
+	
+	// CreateClient instantiates a client by name
+	CreateClient(name, endpoint string, options TransportOptions) (Client, error)
+	
+	// CreateServer instantiates a server by name
+	CreateServer(name, address string, options TransportOptions) (Server, error)
+	
+	// ListTransports returns all available transport names
+	ListTransports() []string
+}

pkg/transport/metrics.go

@@ -0,0 +1,136 @@
+package transport
+
+import (
+	"sync"
+	"sync/atomic"
+	"time"
+)
+
+// MetricsCollector collects metrics for transport operations
+type MetricsCollector interface {
+	// RecordRequest records metrics for a request
+	RecordRequest(requestType string, startTime time.Time, err error)
+	
+	// RecordSend records metrics for bytes sent
+	RecordSend(bytes int)
+	
+	// RecordReceive records metrics for bytes received
+	RecordReceive(bytes int)
+	
+	// RecordConnection records a connection event
+	RecordConnection(successful bool)
+	
+	// GetMetrics returns the current metrics
+	GetMetrics() Metrics
+}
+
+// Metrics represents transport metrics
+type Metrics struct {
+	TotalRequests      uint64
+	SuccessfulRequests uint64
+	FailedRequests     uint64
+	BytesSent          uint64
+	BytesReceived      uint64
+	Connections        uint64
+	ConnectionFailures uint64
+	AvgLatencyByType   map[string]time.Duration
+}
+
+// BasicMetricsCollector is a simple implementation of MetricsCollector
+type BasicMetricsCollector struct {
+	mu                 sync.RWMutex
+	totalRequests      uint64
+	successfulRequests uint64
+	failedRequests     uint64
+	bytesSent          uint64
+	bytesReceived      uint64
+	connections        uint64
+	connectionFailures uint64
+	
+	// Track average latency and count for each request type
+	avgLatencyByType   map[string]time.Duration
+	requestCountByType map[string]uint64
+}
+
+// NewMetricsCollector creates a new metrics collector
+func NewMetricsCollector() MetricsCollector {
+	return &BasicMetricsCollector{
+		avgLatencyByType:   make(map[string]time.Duration),
+		requestCountByType: make(map[string]uint64),
+	}
+}
+
+// RecordRequest records metrics for a request
+func (c *BasicMetricsCollector) RecordRequest(requestType string, startTime time.Time, err error) {
+	atomic.AddUint64(&c.totalRequests, 1)
+	
+	if err == nil {
+		atomic.AddUint64(&c.successfulRequests, 1)
+	} else {
+		atomic.AddUint64(&c.failedRequests, 1)
+	}
+	
+	// Update average latency for request type
+	latency := time.Since(startTime)
+	
+	c.mu.Lock()
+	defer c.mu.Unlock()
+	
+	currentAvg, exists := c.avgLatencyByType[requestType]
+	currentCount, _ := c.requestCountByType[requestType]
+	
+	if exists {
+		// Update running average - the common case for better branch prediction
+		// new_avg = (old_avg * count + new_value) / (count + 1)
+		totalDuration := currentAvg * time.Duration(currentCount) + latency
+		newCount := currentCount + 1
+		c.avgLatencyByType[requestType] = totalDuration / time.Duration(newCount)
+		c.requestCountByType[requestType] = newCount
+	} else {
+		// First request of this type
+		c.avgLatencyByType[requestType] = latency
+		c.requestCountByType[requestType] = 1
+	}
+}
+
+// RecordSend records metrics for bytes sent
+func (c *BasicMetricsCollector) RecordSend(bytes int) {
+	atomic.AddUint64(&c.bytesSent, uint64(bytes))
+}
+
+// RecordReceive records metrics for bytes received
+func (c *BasicMetricsCollector) RecordReceive(bytes int) {
+	atomic.AddUint64(&c.bytesReceived, uint64(bytes))
+}
+
+// RecordConnection records a connection event
+func (c *BasicMetricsCollector) RecordConnection(successful bool) {
+	if successful {
+		atomic.AddUint64(&c.connections, 1)
+	} else {
+		atomic.AddUint64(&c.connectionFailures, 1)
+	}
+}
+
+// GetMetrics returns the current metrics
+func (c *BasicMetricsCollector) GetMetrics() Metrics {
+	c.mu.RLock()
+	defer c.mu.RUnlock()
+	
+	// Create a copy of the average latency map
+	avgLatencyByType := make(map[string]time.Duration, len(c.avgLatencyByType))
+	for k, v := range c.avgLatencyByType {
+		avgLatencyByType[k] = v
+	}
+	
+	return Metrics{
+		TotalRequests:      atomic.LoadUint64(&c.totalRequests),
+		SuccessfulRequests: atomic.LoadUint64(&c.successfulRequests),
+		FailedRequests:     atomic.LoadUint64(&c.failedRequests),
+		BytesSent:          atomic.LoadUint64(&c.bytesSent),
+		BytesReceived:      atomic.LoadUint64(&c.bytesReceived),
+		Connections:        atomic.LoadUint64(&c.connections),
+		ConnectionFailures: atomic.LoadUint64(&c.connectionFailures),
+		AvgLatencyByType:   avgLatencyByType,
+	}
+}

pkg/transport/metrics_extended.go

@@ -0,0 +1,111 @@
+package transport
+
+import (
+	"context"
+	"sync/atomic"
+	"time"
+)
+
+// Metrics struct extensions for server metrics
+type ServerMetrics struct {
+	Metrics
+	ServerStarted  uint64
+	ServerErrored  uint64
+	ServerStopped  uint64
+}
+
+// Connection represents a connection to a remote endpoint
+type Connection interface {
+	// Execute executes a function with the underlying connection
+	Execute(func(interface{}) error) error
+
+	// Close closes the connection
+	Close() error
+
+	// Address returns the remote endpoint address
+	Address() string
+
+	// Status returns the connection status
+	Status() ConnectionStatus
+}
+
+// ConnectionStatus represents the status of a connection
+type ConnectionStatus struct {
+	Connected     bool
+	LastActivity  time.Time
+	ErrorCount    int
+	RequestCount  int
+	LatencyAvg    time.Duration
+}
+
+// TransportManager is an interface for managing transport layer operations
+type TransportManager interface {
+	// Start starts the transport manager
+	Start() error
+
+	// Stop stops the transport manager
+	Stop(ctx context.Context) error
+
+	// Connect connects to a remote endpoint
+	Connect(ctx context.Context, address string) (Connection, error)
+}
+
+// ExtendedMetricsCollector extends the basic metrics collector with server metrics
+type ExtendedMetricsCollector struct {
+	BasicMetricsCollector
+	serverStarted uint64
+	serverErrored uint64
+	serverStopped uint64
+}
+
+// NewMetrics creates a new extended metrics collector with a given transport name
+func NewMetrics(transport string) *ExtendedMetricsCollector {
+	return &ExtendedMetricsCollector{
+		BasicMetricsCollector: BasicMetricsCollector{
+			avgLatencyByType:   make(map[string]time.Duration),
+			requestCountByType: make(map[string]uint64),
+		},
+	}
+}
+
+// ServerStarted increments the server started counter
+func (c *ExtendedMetricsCollector) ServerStarted() {
+	atomic.AddUint64(&c.serverStarted, 1)
+}
+
+// ServerErrored increments the server errored counter
+func (c *ExtendedMetricsCollector) ServerErrored() {
+	atomic.AddUint64(&c.serverErrored, 1)
+}
+
+// ServerStopped increments the server stopped counter
+func (c *ExtendedMetricsCollector) ServerStopped() {
+	atomic.AddUint64(&c.serverStopped, 1)
+}
+
+// ConnectionOpened records a connection opened event
+func (c *ExtendedMetricsCollector) ConnectionOpened() {
+	atomic.AddUint64(&c.connections, 1)
+}
+
+// ConnectionFailed records a connection failed event
+func (c *ExtendedMetricsCollector) ConnectionFailed() {
+	atomic.AddUint64(&c.connectionFailures, 1)
+}
+
+// ConnectionClosed records a connection closed event
+func (c *ExtendedMetricsCollector) ConnectionClosed() {
+	// No specific counter for closed connections yet
+}
+
+// GetExtendedMetrics returns the current extended metrics
+func (c *ExtendedMetricsCollector) GetExtendedMetrics() ServerMetrics {
+	baseMetrics := c.GetMetrics()
+
+	return ServerMetrics{
+		Metrics:       baseMetrics,
+		ServerStarted: atomic.LoadUint64(&c.serverStarted),
+		ServerErrored: atomic.LoadUint64(&c.serverErrored),
+		ServerStopped: atomic.LoadUint64(&c.serverStopped),
+	}
+}

pkg/transport/metrics_test.go

@@ -0,0 +1,101 @@
+package transport
+
+import (
+	"errors"
+	"testing"
+	"time"
+)
+
+func TestBasicMetricsCollector(t *testing.T) {
+	collector := NewMetricsCollector()
+	
+	// Test initial state
+	metrics := collector.GetMetrics()
+	if metrics.TotalRequests != 0 ||
+		metrics.SuccessfulRequests != 0 ||
+		metrics.FailedRequests != 0 ||
+		metrics.BytesSent != 0 ||
+		metrics.BytesReceived != 0 ||
+		metrics.Connections != 0 ||
+		metrics.ConnectionFailures != 0 ||
+		len(metrics.AvgLatencyByType) != 0 {
+		t.Errorf("Initial metrics not initialized correctly: %+v", metrics)
+	}
+	
+	// Test recording successful request
+	startTime := time.Now().Add(-100 * time.Millisecond) // Simulate 100ms request
+	collector.RecordRequest("get", startTime, nil)
+	
+	metrics = collector.GetMetrics()
+	if metrics.TotalRequests != 1 {
+		t.Errorf("Expected TotalRequests to be 1, got %d", metrics.TotalRequests)
+	}
+	if metrics.SuccessfulRequests != 1 {
+		t.Errorf("Expected SuccessfulRequests to be 1, got %d", metrics.SuccessfulRequests)
+	}
+	if metrics.FailedRequests != 0 {
+		t.Errorf("Expected FailedRequests to be 0, got %d", metrics.FailedRequests)
+	}
+	
+	// Check average latency
+	if avgLatency, exists := metrics.AvgLatencyByType["get"]; !exists {
+		t.Error("Expected 'get' latency to exist")
+	} else if avgLatency < 100*time.Millisecond {
+		t.Errorf("Expected latency to be at least 100ms, got %v", avgLatency)
+	}
+	
+	// Test recording failed request
+	startTime = time.Now().Add(-200 * time.Millisecond) // Simulate 200ms request
+	collector.RecordRequest("get", startTime, errors.New("test error"))
+	
+	metrics = collector.GetMetrics()
+	if metrics.TotalRequests != 2 {
+		t.Errorf("Expected TotalRequests to be 2, got %d", metrics.TotalRequests)
+	}
+	if metrics.SuccessfulRequests != 1 {
+		t.Errorf("Expected SuccessfulRequests to be 1, got %d", metrics.SuccessfulRequests)
+	}
+	if metrics.FailedRequests != 1 {
+		t.Errorf("Expected FailedRequests to be 1, got %d", metrics.FailedRequests)
+	}
+	
+	// Test average latency calculation for multiple requests
+	startTime = time.Now().Add(-300 * time.Millisecond)
+	collector.RecordRequest("put", startTime, nil)
+	
+	startTime = time.Now().Add(-500 * time.Millisecond)
+	collector.RecordRequest("put", startTime, nil)
+	
+	metrics = collector.GetMetrics()
+	avgPutLatency := metrics.AvgLatencyByType["put"]
+	
+	// Expected avg is around (300ms + 500ms) / 2 = 400ms
+	if avgPutLatency < 390*time.Millisecond || avgPutLatency > 410*time.Millisecond {
+		t.Errorf("Expected average 'put' latency to be around 400ms, got %v", avgPutLatency)
+	}
+	
+	// Test byte tracking
+	collector.RecordSend(1000)
+	collector.RecordReceive(2000)
+	
+	metrics = collector.GetMetrics()
+	if metrics.BytesSent != 1000 {
+		t.Errorf("Expected BytesSent to be 1000, got %d", metrics.BytesSent)
+	}
+	if metrics.BytesReceived != 2000 {
+		t.Errorf("Expected BytesReceived to be 2000, got %d", metrics.BytesReceived)
+	}
+	
+	// Test connection tracking
+	collector.RecordConnection(true)
+	collector.RecordConnection(false)
+	collector.RecordConnection(true)
+	
+	metrics = collector.GetMetrics()
+	if metrics.Connections != 2 {
+		t.Errorf("Expected Connections to be 2, got %d", metrics.Connections)
+	}
+	if metrics.ConnectionFailures != 1 {
+		t.Errorf("Expected ConnectionFailures to be 1, got %d", metrics.ConnectionFailures)
+	}
+}

pkg/transport/network.go

@@ -0,0 +1,22 @@
+package transport
+
+import (
+	"crypto/tls"
+	"net"
+)
+
+// CreateListener creates a network listener with optional TLS
+func CreateListener(network, address string, tlsConfig *tls.Config) (net.Listener, error) {
+	// Create the listener
+	listener, err := net.Listen(network, address)
+	if err != nil {
+		return nil, err
+	}
+	
+	// If TLS is configured, wrap the listener
+	if tlsConfig != nil {
+		listener = tls.NewListener(listener, tlsConfig)
+	}
+	
+	return listener, nil
+}

pkg/transport/registry.go

@@ -0,0 +1,114 @@
+package transport
+
+import (
+	"fmt"
+	"sync"
+)
+
+// registry implements the Registry interface
+type registry struct {
+	mu            sync.RWMutex
+	clientFactories map[string]ClientFactory
+	serverFactories map[string]ServerFactory
+}
+
+// NewRegistry creates a new transport registry
+func NewRegistry() Registry {
+	return &registry{
+		clientFactories: make(map[string]ClientFactory),
+		serverFactories: make(map[string]ServerFactory),
+	}
+}
+
+// DefaultRegistry is the default global registry instance
+var DefaultRegistry = NewRegistry()
+
+// RegisterClient adds a new client implementation to the registry
+func (r *registry) RegisterClient(name string, factory ClientFactory) {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+	r.clientFactories[name] = factory
+}
+
+// RegisterServer adds a new server implementation to the registry
+func (r *registry) RegisterServer(name string, factory ServerFactory) {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+	r.serverFactories[name] = factory
+}
+
+// CreateClient instantiates a client by name
+func (r *registry) CreateClient(name, endpoint string, options TransportOptions) (Client, error) {
+	r.mu.RLock()
+	factory, exists := r.clientFactories[name]
+	r.mu.RUnlock()
+
+	if !exists {
+		return nil, fmt.Errorf("transport client %q not registered", name)
+	}
+
+	return factory(endpoint, options)
+}
+
+// CreateServer instantiates a server by name
+func (r *registry) CreateServer(name, address string, options TransportOptions) (Server, error) {
+	r.mu.RLock()
+	factory, exists := r.serverFactories[name]
+	r.mu.RUnlock()
+
+	if !exists {
+		return nil, fmt.Errorf("transport server %q not registered", name)
+	}
+
+	return factory(address, options)
+}
+
+// ListTransports returns all available transport names
+func (r *registry) ListTransports() []string {
+	r.mu.RLock()
+	defer r.mu.RUnlock()
+
+	// Get unique transport names
+	names := make(map[string]struct{})
+	for name := range r.clientFactories {
+		names[name] = struct{}{}
+	}
+	for name := range r.serverFactories {
+		names[name] = struct{}{}
+	}
+
+	// Convert to slice
+	result := make([]string, 0, len(names))
+	for name := range names {
+		result = append(result, name)
+	}
+
+	return result
+}
+
+// Helper functions for global registry
+
+// RegisterClientTransport registers a client transport with the default registry
+func RegisterClientTransport(name string, factory ClientFactory) {
+	DefaultRegistry.RegisterClient(name, factory)
+}
+
+// RegisterServerTransport registers a server transport with the default registry
+func RegisterServerTransport(name string, factory ServerFactory) {
+	DefaultRegistry.RegisterServer(name, factory)
+}
+
+// GetClient creates a client using the default registry
+func GetClient(name, endpoint string, options TransportOptions) (Client, error) {
+	return DefaultRegistry.CreateClient(name, endpoint, options)
+}
+
+// GetServer creates a server using the default registry
+func GetServer(name, address string, options TransportOptions) (Server, error) {
+	return DefaultRegistry.CreateServer(name, address, options)
+}
+
+// AvailableTransports lists all available transports in the default registry
+func AvailableTransports() []string {
+	return DefaultRegistry.ListTransports()
+}

pkg/transport/registry_test.go

@@ -0,0 +1,162 @@
+package transport
+
+import (
+	"context"
+	"errors"
+	"testing"
+	"time"
+)
+
+// mockClient implements the Client interface for testing
+type mockClient struct {
+	connected bool
+	endpoint  string
+	options   TransportOptions
+}
+
+func (m *mockClient) Connect(ctx context.Context) error {
+	m.connected = true
+	return nil
+}
+
+func (m *mockClient) Close() error {
+	m.connected = false
+	return nil
+}
+
+func (m *mockClient) IsConnected() bool {
+	return m.connected
+}
+
+func (m *mockClient) Status() TransportStatus {
+	return TransportStatus{
+		Connected: m.connected,
+	}
+}
+
+func (m *mockClient) Send(ctx context.Context, request Request) (Response, error) {
+	if !m.connected {
+		return nil, ErrNotConnected
+	}
+	return &BasicResponse{
+		ResponseType: request.Type() + "_response",
+		ResponseData: []byte("mock response"),
+	}, nil
+}
+
+func (m *mockClient) Stream(ctx context.Context) (Stream, error) {
+	if !m.connected {
+		return nil, ErrNotConnected
+	}
+	return nil, errors.New("streaming not implemented in mock")
+}
+
+// mockClientFactory creates a new mock client
+func mockClientFactory(endpoint string, options TransportOptions) (Client, error) {
+	return &mockClient{
+		endpoint: endpoint,
+		options:  options,
+	}, nil
+}
+
+// mockServer implements the Server interface for testing
+type mockServer struct {
+	started bool
+	address string
+	options TransportOptions
+	handler RequestHandler
+}
+
+func (m *mockServer) Start() error {
+	m.started = true
+	return nil
+}
+
+func (m *mockServer) Serve() error {
+	m.started = true
+	return nil
+}
+
+func (m *mockServer) Stop(ctx context.Context) error {
+	m.started = false
+	return nil
+}
+
+func (m *mockServer) SetRequestHandler(handler RequestHandler) {
+	m.handler = handler
+}
+
+// mockServerFactory creates a new mock server
+func mockServerFactory(address string, options TransportOptions) (Server, error) {
+	return &mockServer{
+		address: address,
+		options: options,
+	}, nil
+}
+
+// TestRegistry tests the transport registry
+func TestRegistry(t *testing.T) {
+	registry := NewRegistry()
+	
+	// Register transports
+	registry.RegisterClient("mock", mockClientFactory)
+	registry.RegisterServer("mock", mockServerFactory)
+	
+	// Test listing transports
+	transports := registry.ListTransports()
+	if len(transports) != 1 || transports[0] != "mock" {
+		t.Errorf("Expected [mock], got %v", transports)
+	}
+	
+	// Test creating client
+	client, err := registry.CreateClient("mock", "localhost:8080", TransportOptions{
+		Timeout: 5 * time.Second,
+	})
+	if err != nil {
+		t.Fatalf("Failed to create client: %v", err)
+	}
+	
+	// Test client methods
+	if client.IsConnected() {
+		t.Error("Expected client to be disconnected initially")
+	}
+	
+	err = client.Connect(context.Background())
+	if err != nil {
+		t.Fatalf("Failed to connect: %v", err)
+	}
+	
+	if !client.IsConnected() {
+		t.Error("Expected client to be connected after Connect()")
+	}
+	
+	// Test server creation
+	server, err := registry.CreateServer("mock", "localhost:8080", TransportOptions{
+		Timeout: 5 * time.Second,
+	})
+	if err != nil {
+		t.Fatalf("Failed to create server: %v", err)
+	}
+	
+	// Test server methods
+	err = server.Start()
+	if err != nil {
+		t.Fatalf("Failed to start server: %v", err)
+	}
+	
+	mockServer := server.(*mockServer)
+	if !mockServer.started {
+		t.Error("Expected server to be started")
+	}
+	
+	// Test non-existent transport
+	_, err = registry.CreateClient("nonexistent", "", TransportOptions{})
+	if err == nil {
+		t.Error("Expected error creating non-existent client")
+	}
+	
+	_, err = registry.CreateServer("nonexistent", "", TransportOptions{})
+	if err == nil {
+		t.Error("Expected error creating non-existent server")
+	}
+}

pkg/wal/wal.go

@@ -11,7 +11,7 @@ import (
 	"sync"
 	"time"
 
-	"github.com/jeremytregunna/kevo/pkg/config"
+	"github.com/KevoDB/kevo/pkg/config"
 )
 
 const (

pkg/wal/wal_test.go

@@ -8,7 +8,7 @@ import (
 	"path/filepath"
 	"testing"
 
-	"github.com/jeremytregunna/kevo/pkg/config"
+	"github.com/KevoDB/kevo/pkg/config"
 )
 
 func createTestConfig() *config.Config {

proto/kevo/service.proto

@@ -0,0 +1,182 @@
+syntax = "proto3";
+
+package kevo;
+
+option go_package = "github.com/jeremytregunna/kevo/pkg/grpc/proto;proto";
+
+service KevoService {
+  // Key-Value Operations
+  rpc Get(GetRequest) returns (GetResponse);
+  rpc Put(PutRequest) returns (PutResponse);
+  rpc Delete(DeleteRequest) returns (DeleteResponse);
+  
+  // Batch Operations
+  rpc BatchWrite(BatchWriteRequest) returns (BatchWriteResponse);
+  
+  // Iterator Operations
+  rpc Scan(ScanRequest) returns (stream ScanResponse);
+  
+  // Transaction Operations
+  rpc BeginTransaction(BeginTransactionRequest) returns (BeginTransactionResponse);
+  rpc CommitTransaction(CommitTransactionRequest) returns (CommitTransactionResponse);
+  rpc RollbackTransaction(RollbackTransactionRequest) returns (RollbackTransactionResponse);
+  
+  // Transaction Operations within an active transaction
+  rpc TxGet(TxGetRequest) returns (TxGetResponse);
+  rpc TxPut(TxPutRequest) returns (TxPutResponse);
+  rpc TxDelete(TxDeleteRequest) returns (TxDeleteResponse);
+  rpc TxScan(TxScanRequest) returns (stream TxScanResponse);
+  
+  // Administrative Operations
+  rpc GetStats(GetStatsRequest) returns (GetStatsResponse);
+  rpc Compact(CompactRequest) returns (CompactResponse);
+}
+
+// Basic message types
+message GetRequest {
+  bytes key = 1;
+}
+
+message GetResponse {
+  bytes value = 1;
+  bool found = 2;
+}
+
+message PutRequest {
+  bytes key = 1;
+  bytes value = 2;
+  bool sync = 3;
+}
+
+message PutResponse {
+  bool success = 1;
+}
+
+message DeleteRequest {
+  bytes key = 1;
+  bool sync = 2;
+}
+
+message DeleteResponse {
+  bool success = 1;
+}
+
+// Batch operations
+message BatchWriteRequest {
+  repeated Operation operations = 1;
+  bool sync = 2;
+}
+
+message Operation {
+  enum Type {
+    PUT = 0;
+    DELETE = 1;
+  }
+  Type type = 1;
+  bytes key = 2;
+  bytes value = 3; // Only used for PUT
+}
+
+message BatchWriteResponse {
+  bool success = 1;
+}
+
+// Iterator operations
+message ScanRequest {
+  bytes prefix = 1;
+  bytes start_key = 2;
+  bytes end_key = 3;
+  int32 limit = 4;
+}
+
+message ScanResponse {
+  bytes key = 1;
+  bytes value = 2;
+}
+
+// Transaction operations
+message BeginTransactionRequest {
+  bool read_only = 1;
+}
+
+message BeginTransactionResponse {
+  string transaction_id = 1;
+}
+
+message CommitTransactionRequest {
+  string transaction_id = 1;
+}
+
+message CommitTransactionResponse {
+  bool success = 1;
+}
+
+message RollbackTransactionRequest {
+  string transaction_id = 1;
+}
+
+message RollbackTransactionResponse {
+  bool success = 1;
+}
+
+message TxGetRequest {
+  string transaction_id = 1;
+  bytes key = 2;
+}
+
+message TxGetResponse {
+  bytes value = 1;
+  bool found = 2;
+}
+
+message TxPutRequest {
+  string transaction_id = 1;
+  bytes key = 2;
+  bytes value = 3;
+}
+
+message TxPutResponse {
+  bool success = 1;
+}
+
+message TxDeleteRequest {
+  string transaction_id = 1;
+  bytes key = 2;
+}
+
+message TxDeleteResponse {
+  bool success = 1;
+}
+
+message TxScanRequest {
+  string transaction_id = 1;
+  bytes prefix = 2;
+  bytes start_key = 3;
+  bytes end_key = 4;
+  int32 limit = 5;
+}
+
+message TxScanResponse {
+  bytes key = 1;
+  bytes value = 2;
+}
+
+// Administrative operations
+message GetStatsRequest {}
+
+message GetStatsResponse {
+  int64 key_count = 1;
+  int64 storage_size = 2;
+  int32 memtable_count = 3;
+  int32 sstable_count = 4;
+  double write_amplification = 5;
+  double read_amplification = 6;
+}
+
+message CompactRequest {
+  bool force = 1;
+}
+
+message CompactResponse {
+  bool success = 1;
+}

proto/kevo/service_grpc.pb.go

@@ -0,0 +1,634 @@
+// Code generated by protoc-gen-go-grpc. DO NOT EDIT.
+// versions:
+// - protoc-gen-go-grpc v1.5.1
+// - protoc             v3.20.3
+// source: proto/kevo/service.proto
+
+package proto
+
+import (
+	context "context"
+	grpc "google.golang.org/grpc"
+	codes "google.golang.org/grpc/codes"
+	status "google.golang.org/grpc/status"
+)
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the grpc package it is being compiled against.
+// Requires gRPC-Go v1.64.0 or later.
+const _ = grpc.SupportPackageIsVersion9
+
+const (
+	KevoService_Get_FullMethodName                 = "/kevo.KevoService/Get"
+	KevoService_Put_FullMethodName                 = "/kevo.KevoService/Put"
+	KevoService_Delete_FullMethodName              = "/kevo.KevoService/Delete"
+	KevoService_BatchWrite_FullMethodName          = "/kevo.KevoService/BatchWrite"
+	KevoService_Scan_FullMethodName                = "/kevo.KevoService/Scan"
+	KevoService_BeginTransaction_FullMethodName    = "/kevo.KevoService/BeginTransaction"
+	KevoService_CommitTransaction_FullMethodName   = "/kevo.KevoService/CommitTransaction"
+	KevoService_RollbackTransaction_FullMethodName = "/kevo.KevoService/RollbackTransaction"
+	KevoService_TxGet_FullMethodName               = "/kevo.KevoService/TxGet"
+	KevoService_TxPut_FullMethodName               = "/kevo.KevoService/TxPut"
+	KevoService_TxDelete_FullMethodName            = "/kevo.KevoService/TxDelete"
+	KevoService_TxScan_FullMethodName              = "/kevo.KevoService/TxScan"
+	KevoService_GetStats_FullMethodName            = "/kevo.KevoService/GetStats"
+	KevoService_Compact_FullMethodName             = "/kevo.KevoService/Compact"
+)
+
+// KevoServiceClient is the client API for KevoService service.
+//
+// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
+type KevoServiceClient interface {
+	// Key-Value Operations
+	Get(ctx context.Context, in *GetRequest, opts ...grpc.CallOption) (*GetResponse, error)
+	Put(ctx context.Context, in *PutRequest, opts ...grpc.CallOption) (*PutResponse, error)
+	Delete(ctx context.Context, in *DeleteRequest, opts ...grpc.CallOption) (*DeleteResponse, error)
+	// Batch Operations
+	BatchWrite(ctx context.Context, in *BatchWriteRequest, opts ...grpc.CallOption) (*BatchWriteResponse, error)
+	// Iterator Operations
+	Scan(ctx context.Context, in *ScanRequest, opts ...grpc.CallOption) (grpc.ServerStreamingClient[ScanResponse], error)
+	// Transaction Operations
+	BeginTransaction(ctx context.Context, in *BeginTransactionRequest, opts ...grpc.CallOption) (*BeginTransactionResponse, error)
+	CommitTransaction(ctx context.Context, in *CommitTransactionRequest, opts ...grpc.CallOption) (*CommitTransactionResponse, error)
+	RollbackTransaction(ctx context.Context, in *RollbackTransactionRequest, opts ...grpc.CallOption) (*RollbackTransactionResponse, error)
+	// Transaction Operations within an active transaction
+	TxGet(ctx context.Context, in *TxGetRequest, opts ...grpc.CallOption) (*TxGetResponse, error)
+	TxPut(ctx context.Context, in *TxPutRequest, opts ...grpc.CallOption) (*TxPutResponse, error)
+	TxDelete(ctx context.Context, in *TxDeleteRequest, opts ...grpc.CallOption) (*TxDeleteResponse, error)
+	TxScan(ctx context.Context, in *TxScanRequest, opts ...grpc.CallOption) (grpc.ServerStreamingClient[TxScanResponse], error)
+	// Administrative Operations
+	GetStats(ctx context.Context, in *GetStatsRequest, opts ...grpc.CallOption) (*GetStatsResponse, error)
+	Compact(ctx context.Context, in *CompactRequest, opts ...grpc.CallOption) (*CompactResponse, error)
+}
+
+type kevoServiceClient struct {
+	cc grpc.ClientConnInterface
+}
+
+func NewKevoServiceClient(cc grpc.ClientConnInterface) KevoServiceClient {
+	return &kevoServiceClient{cc}
+}
+
+func (c *kevoServiceClient) Get(ctx context.Context, in *GetRequest, opts ...grpc.CallOption) (*GetResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(GetResponse)
+	err := c.cc.Invoke(ctx, KevoService_Get_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *kevoServiceClient) Put(ctx context.Context, in *PutRequest, opts ...grpc.CallOption) (*PutResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(PutResponse)
+	err := c.cc.Invoke(ctx, KevoService_Put_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *kevoServiceClient) Delete(ctx context.Context, in *DeleteRequest, opts ...grpc.CallOption) (*DeleteResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(DeleteResponse)
+	err := c.cc.Invoke(ctx, KevoService_Delete_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *kevoServiceClient) BatchWrite(ctx context.Context, in *BatchWriteRequest, opts ...grpc.CallOption) (*BatchWriteResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(BatchWriteResponse)
+	err := c.cc.Invoke(ctx, KevoService_BatchWrite_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *kevoServiceClient) Scan(ctx context.Context, in *ScanRequest, opts ...grpc.CallOption) (grpc.ServerStreamingClient[ScanResponse], error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	stream, err := c.cc.NewStream(ctx, &KevoService_ServiceDesc.Streams[0], KevoService_Scan_FullMethodName, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	x := &grpc.GenericClientStream[ScanRequest, ScanResponse]{ClientStream: stream}
+	if err := x.ClientStream.SendMsg(in); err != nil {
+		return nil, err
+	}
+	if err := x.ClientStream.CloseSend(); err != nil {
+		return nil, err
+	}
+	return x, nil
+}
+
+// This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.
+type KevoService_ScanClient = grpc.ServerStreamingClient[ScanResponse]
+
+func (c *kevoServiceClient) BeginTransaction(ctx context.Context, in *BeginTransactionRequest, opts ...grpc.CallOption) (*BeginTransactionResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(BeginTransactionResponse)
+	err := c.cc.Invoke(ctx, KevoService_BeginTransaction_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *kevoServiceClient) CommitTransaction(ctx context.Context, in *CommitTransactionRequest, opts ...grpc.CallOption) (*CommitTransactionResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(CommitTransactionResponse)
+	err := c.cc.Invoke(ctx, KevoService_CommitTransaction_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *kevoServiceClient) RollbackTransaction(ctx context.Context, in *RollbackTransactionRequest, opts ...grpc.CallOption) (*RollbackTransactionResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(RollbackTransactionResponse)
+	err := c.cc.Invoke(ctx, KevoService_RollbackTransaction_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *kevoServiceClient) TxGet(ctx context.Context, in *TxGetRequest, opts ...grpc.CallOption) (*TxGetResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(TxGetResponse)
+	err := c.cc.Invoke(ctx, KevoService_TxGet_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *kevoServiceClient) TxPut(ctx context.Context, in *TxPutRequest, opts ...grpc.CallOption) (*TxPutResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(TxPutResponse)
+	err := c.cc.Invoke(ctx, KevoService_TxPut_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *kevoServiceClient) TxDelete(ctx context.Context, in *TxDeleteRequest, opts ...grpc.CallOption) (*TxDeleteResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(TxDeleteResponse)
+	err := c.cc.Invoke(ctx, KevoService_TxDelete_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *kevoServiceClient) TxScan(ctx context.Context, in *TxScanRequest, opts ...grpc.CallOption) (grpc.ServerStreamingClient[TxScanResponse], error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	stream, err := c.cc.NewStream(ctx, &KevoService_ServiceDesc.Streams[1], KevoService_TxScan_FullMethodName, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	x := &grpc.GenericClientStream[TxScanRequest, TxScanResponse]{ClientStream: stream}
+	if err := x.ClientStream.SendMsg(in); err != nil {
+		return nil, err
+	}
+	if err := x.ClientStream.CloseSend(); err != nil {
+		return nil, err
+	}
+	return x, nil
+}
+
+// This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.
+type KevoService_TxScanClient = grpc.ServerStreamingClient[TxScanResponse]
+
+func (c *kevoServiceClient) GetStats(ctx context.Context, in *GetStatsRequest, opts ...grpc.CallOption) (*GetStatsResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(GetStatsResponse)
+	err := c.cc.Invoke(ctx, KevoService_GetStats_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *kevoServiceClient) Compact(ctx context.Context, in *CompactRequest, opts ...grpc.CallOption) (*CompactResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(CompactResponse)
+	err := c.cc.Invoke(ctx, KevoService_Compact_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// KevoServiceServer is the server API for KevoService service.
+// All implementations must embed UnimplementedKevoServiceServer
+// for forward compatibility.
+type KevoServiceServer interface {
+	// Key-Value Operations
+	Get(context.Context, *GetRequest) (*GetResponse, error)
+	Put(context.Context, *PutRequest) (*PutResponse, error)
+	Delete(context.Context, *DeleteRequest) (*DeleteResponse, error)
+	// Batch Operations
+	BatchWrite(context.Context, *BatchWriteRequest) (*BatchWriteResponse, error)
+	// Iterator Operations
+	Scan(*ScanRequest, grpc.ServerStreamingServer[ScanResponse]) error
+	// Transaction Operations
+	BeginTransaction(context.Context, *BeginTransactionRequest) (*BeginTransactionResponse, error)
+	CommitTransaction(context.Context, *CommitTransactionRequest) (*CommitTransactionResponse, error)
+	RollbackTransaction(context.Context, *RollbackTransactionRequest) (*RollbackTransactionResponse, error)
+	// Transaction Operations within an active transaction
+	TxGet(context.Context, *TxGetRequest) (*TxGetResponse, error)
+	TxPut(context.Context, *TxPutRequest) (*TxPutResponse, error)
+	TxDelete(context.Context, *TxDeleteRequest) (*TxDeleteResponse, error)
+	TxScan(*TxScanRequest, grpc.ServerStreamingServer[TxScanResponse]) error
+	// Administrative Operations
+	GetStats(context.Context, *GetStatsRequest) (*GetStatsResponse, error)
+	Compact(context.Context, *CompactRequest) (*CompactResponse, error)
+	mustEmbedUnimplementedKevoServiceServer()
+}
+
+// UnimplementedKevoServiceServer must be embedded to have
+// forward compatible implementations.
+//
+// NOTE: this should be embedded by value instead of pointer to avoid a nil
+// pointer dereference when methods are called.
+type UnimplementedKevoServiceServer struct{}
+
+func (UnimplementedKevoServiceServer) Get(context.Context, *GetRequest) (*GetResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Get not implemented")
+}
+func (UnimplementedKevoServiceServer) Put(context.Context, *PutRequest) (*PutResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Put not implemented")
+}
+func (UnimplementedKevoServiceServer) Delete(context.Context, *DeleteRequest) (*DeleteResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Delete not implemented")
+}
+func (UnimplementedKevoServiceServer) BatchWrite(context.Context, *BatchWriteRequest) (*BatchWriteResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method BatchWrite not implemented")
+}
+func (UnimplementedKevoServiceServer) Scan(*ScanRequest, grpc.ServerStreamingServer[ScanResponse]) error {
+	return status.Errorf(codes.Unimplemented, "method Scan not implemented")
+}
+func (UnimplementedKevoServiceServer) BeginTransaction(context.Context, *BeginTransactionRequest) (*BeginTransactionResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method BeginTransaction not implemented")
+}
+func (UnimplementedKevoServiceServer) CommitTransaction(context.Context, *CommitTransactionRequest) (*CommitTransactionResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method CommitTransaction not implemented")
+}
+func (UnimplementedKevoServiceServer) RollbackTransaction(context.Context, *RollbackTransactionRequest) (*RollbackTransactionResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method RollbackTransaction not implemented")
+}
+func (UnimplementedKevoServiceServer) TxGet(context.Context, *TxGetRequest) (*TxGetResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method TxGet not implemented")
+}
+func (UnimplementedKevoServiceServer) TxPut(context.Context, *TxPutRequest) (*TxPutResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method TxPut not implemented")
+}
+func (UnimplementedKevoServiceServer) TxDelete(context.Context, *TxDeleteRequest) (*TxDeleteResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method TxDelete not implemented")
+}
+func (UnimplementedKevoServiceServer) TxScan(*TxScanRequest, grpc.ServerStreamingServer[TxScanResponse]) error {
+	return status.Errorf(codes.Unimplemented, "method TxScan not implemented")
+}
+func (UnimplementedKevoServiceServer) GetStats(context.Context, *GetStatsRequest) (*GetStatsResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method GetStats not implemented")
+}
+func (UnimplementedKevoServiceServer) Compact(context.Context, *CompactRequest) (*CompactResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Compact not implemented")
+}
+func (UnimplementedKevoServiceServer) mustEmbedUnimplementedKevoServiceServer() {}
+func (UnimplementedKevoServiceServer) testEmbeddedByValue()                     {}
+
+// UnsafeKevoServiceServer may be embedded to opt out of forward compatibility for this service.
+// Use of this interface is not recommended, as added methods to KevoServiceServer will
+// result in compilation errors.
+type UnsafeKevoServiceServer interface {
+	mustEmbedUnimplementedKevoServiceServer()
+}
+
+func RegisterKevoServiceServer(s grpc.ServiceRegistrar, srv KevoServiceServer) {
+	// If the following call pancis, it indicates UnimplementedKevoServiceServer was
+	// embedded by pointer and is nil.  This will cause panics if an
+	// unimplemented method is ever invoked, so we test this at initialization
+	// time to prevent it from happening at runtime later due to I/O.
+	if t, ok := srv.(interface{ testEmbeddedByValue() }); ok {
+		t.testEmbeddedByValue()
+	}
+	s.RegisterService(&KevoService_ServiceDesc, srv)
+}
+
+func _KevoService_Get_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(GetRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(KevoServiceServer).Get(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: KevoService_Get_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(KevoServiceServer).Get(ctx, req.(*GetRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _KevoService_Put_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(PutRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(KevoServiceServer).Put(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: KevoService_Put_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(KevoServiceServer).Put(ctx, req.(*PutRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _KevoService_Delete_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(DeleteRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(KevoServiceServer).Delete(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: KevoService_Delete_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(KevoServiceServer).Delete(ctx, req.(*DeleteRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _KevoService_BatchWrite_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(BatchWriteRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(KevoServiceServer).BatchWrite(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: KevoService_BatchWrite_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(KevoServiceServer).BatchWrite(ctx, req.(*BatchWriteRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _KevoService_Scan_Handler(srv interface{}, stream grpc.ServerStream) error {
+	m := new(ScanRequest)
+	if err := stream.RecvMsg(m); err != nil {
+		return err
+	}
+	return srv.(KevoServiceServer).Scan(m, &grpc.GenericServerStream[ScanRequest, ScanResponse]{ServerStream: stream})
+}
+
+// This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.
+type KevoService_ScanServer = grpc.ServerStreamingServer[ScanResponse]
+
+func _KevoService_BeginTransaction_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(BeginTransactionRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(KevoServiceServer).BeginTransaction(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: KevoService_BeginTransaction_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(KevoServiceServer).BeginTransaction(ctx, req.(*BeginTransactionRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _KevoService_CommitTransaction_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(CommitTransactionRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(KevoServiceServer).CommitTransaction(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: KevoService_CommitTransaction_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(KevoServiceServer).CommitTransaction(ctx, req.(*CommitTransactionRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _KevoService_RollbackTransaction_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(RollbackTransactionRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(KevoServiceServer).RollbackTransaction(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: KevoService_RollbackTransaction_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(KevoServiceServer).RollbackTransaction(ctx, req.(*RollbackTransactionRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _KevoService_TxGet_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(TxGetRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(KevoServiceServer).TxGet(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: KevoService_TxGet_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(KevoServiceServer).TxGet(ctx, req.(*TxGetRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _KevoService_TxPut_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(TxPutRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(KevoServiceServer).TxPut(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: KevoService_TxPut_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(KevoServiceServer).TxPut(ctx, req.(*TxPutRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _KevoService_TxDelete_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(TxDeleteRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(KevoServiceServer).TxDelete(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: KevoService_TxDelete_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(KevoServiceServer).TxDelete(ctx, req.(*TxDeleteRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _KevoService_TxScan_Handler(srv interface{}, stream grpc.ServerStream) error {
+	m := new(TxScanRequest)
+	if err := stream.RecvMsg(m); err != nil {
+		return err
+	}
+	return srv.(KevoServiceServer).TxScan(m, &grpc.GenericServerStream[TxScanRequest, TxScanResponse]{ServerStream: stream})
+}
+
+// This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.
+type KevoService_TxScanServer = grpc.ServerStreamingServer[TxScanResponse]
+
+func _KevoService_GetStats_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(GetStatsRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(KevoServiceServer).GetStats(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: KevoService_GetStats_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(KevoServiceServer).GetStats(ctx, req.(*GetStatsRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _KevoService_Compact_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(CompactRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(KevoServiceServer).Compact(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: KevoService_Compact_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(KevoServiceServer).Compact(ctx, req.(*CompactRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+// KevoService_ServiceDesc is the grpc.ServiceDesc for KevoService service.
+// It's only intended for direct use with grpc.RegisterService,
+// and not to be introspected or modified (even as a copy)
+var KevoService_ServiceDesc = grpc.ServiceDesc{
+	ServiceName: "kevo.KevoService",
+	HandlerType: (*KevoServiceServer)(nil),
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "Get",
+			Handler:    _KevoService_Get_Handler,
+		},
+		{
+			MethodName: "Put",
+			Handler:    _KevoService_Put_Handler,
+		},
+		{
+			MethodName: "Delete",
+			Handler:    _KevoService_Delete_Handler,
+		},
+		{
+			MethodName: "BatchWrite",
+			Handler:    _KevoService_BatchWrite_Handler,
+		},
+		{
+			MethodName: "BeginTransaction",
+			Handler:    _KevoService_BeginTransaction_Handler,
+		},
+		{
+			MethodName: "CommitTransaction",
+			Handler:    _KevoService_CommitTransaction_Handler,
+		},
+		{
+			MethodName: "RollbackTransaction",
+			Handler:    _KevoService_RollbackTransaction_Handler,
+		},
+		{
+			MethodName: "TxGet",
+			Handler:    _KevoService_TxGet_Handler,
+		},
+		{
+			MethodName: "TxPut",
+			Handler:    _KevoService_TxPut_Handler,
+		},
+		{
+			MethodName: "TxDelete",
+			Handler:    _KevoService_TxDelete_Handler,
+		},
+		{
+			MethodName: "GetStats",
+			Handler:    _KevoService_GetStats_Handler,
+		},
+		{
+			MethodName: "Compact",
+			Handler:    _KevoService_Compact_Handler,
+		},
+	},
+	Streams: []grpc.StreamDesc{
+		{
+			StreamName:    "Scan",
+			Handler:       _KevoService_Scan_Handler,
+			ServerStreams: true,
+		},
+		{
+			StreamName:    "TxScan",
+			Handler:       _KevoService_TxScan_Handler,
+			ServerStreams: true,
+		},
+	},
+	Metadata: "proto/kevo/service.proto",
+}