MyRedis

MyRedis is a Redis clone implementation built from scratch to understand the internals of in-memory data stores and network protocols.

Key Features

• Redis Protocol Implementation: Full RESP (Redis Serialization Protocol) parser for command handling
• In-Memory Key-Value Store: High-performance storage for strings and hashes
• Concurrent Connections: Handle multiple client connections simultaneously using goroutines
• Data Persistence: Append-Only File (AOF) for crash recovery and data durability
• Multiple Commands: Support for SET, GET, DEL, HSET, HGETALL, and more
• Easily Extendable: Simple design for adding new commands and features
• Redis CLI Compatible: Works with standard redis-cli tool

Supported Commands

• String Operations: SET, GET, DEL
• Hash Operations: HSET, HGETALL, HDEL
• Basic Commands: PING, ECHO

How It Works

1. Server Initialization: Starts on port 6379 by default
2. Connection Handling: Accepts multiple client connections using goroutines
3. Protocol Parsing: RESP parser decodes incoming commands
4. Command Execution: Handler processes commands and updates in-memory store
5. Data Persistence: AOF logs all write operations for recovery
6. Response Generation: Sends RESP-formatted responses back to clients

Technologies Used

• Language: Go (for performance and concurrency)
• Protocol: RESP (Redis Serialization Protocol)
• Concurrency: Goroutines for handling multiple clients
• Persistence: Append-Only File (AOF)
• Networking: Go net package
• Tools: redis-cli for testing

Project Structure

• main.go - Server initialization and lifecycle
• resp.go - RESP protocol parser
• handler.go - Command processing logic
• aof.go - Data persistence layer