Rego

a lightweight Redis server implementation written in Go, designed to be compatible with standard Redis clients while providing core Redis functionality.

Features

• Standard Redis protocol (RESP) support
• Key-value operations (GET, SET with expiry options)
• Transaction support (MULTI, EXEC, DISCARD)
• Replication (master-slave architecture)
• RDB file parsing and persistence
• Redis Streams support (XADD, XRANGE, XREAD)
• Incremental operations (INCR)

Getting Started

Prerequisites

• Go 1.18 or higher

Running the Server

# Run the server with default settings
./run.sh

# Run the server with custom settings
./run.sh --port 6380 --dir /path/to/data --dbfilename custom.rdb

Setting up Replication

To create a replica instance:

# Start the master on default port (6379)
./run.sh

# Start a replica on port 6380
./run.sh --port 6380 --replicaof "localhost 6379"

Project Structure

• app/ - Source code directory
  • main.go - Server initialization and client handling
  • handler.go - Command implementations
  • resp.go - RESP protocol implementation
  • key-value-store.go - In-memory data store
  • replica.go - Replication logic
  • rdb_parser.go - RDB file format parser
  • stream.go & stream_manager.go - Redis Streams implementation

Supported Commands

• Basic: PING, ECHO
• Key-Value: GET, SET (with PX, EX, NX, XX options)
• Keys: KEYS, TYPE
• Configuration: CONFIG GET
• Replication: REPLCONF, PSYNC, WAIT, INFO REPLICATION
• Streams: XADD, XRANGE, XREAD
• Transactions: MULTI, EXEC, DISCARD
• Incremental: INCR