A lightweight Redis-compatible server implementation in Go, built from scratch using raw TCP sockets and the Redis Serialization Protocol (RESP).

GoRedis is an educational implementation of a Redis-like in-memory data store. It demonstrates low-level network programming in Go, including TCP socket handling, the RESP protocol parsing, and concurrent client management.

• GET - Retrieve the value of a key
• SET - Set a key to hold a string value
• LPUSH - Prepend elements to a list
• LRANGE - Get a range of elements from a list

• Go 1.22 or later

git clone https://github.com/aneeshpatne/goredis.git
cd goredis

go run server.go

The server listens on port 6380 by default.

Connect to the server using redis-cli or any Redis-compatible client.

redis-cli -p 6380
127.0.0.1:6380> PING
PONG

echo -e '*1\r\n$4\r\nPING\r\n' | nc localhost 6380

goredis/
├── server.go       # Main server, TCP listener and client handler
└── resp/
    └── resp.go     # RESP protocol encoder and parser

• Server: Manages TCP connections and routes commands to handlers
• RESP Package: Implements the Redis Serialization Protocol for encoding responses and parsing incoming commands

GoRedis implements the RESP (Redis Serialization Protocol) specification:

• Simple Strings: Prefixed with +
• Errors: Prefixed with -
• Bulk Strings: Prefixed with $ followed by the byte length
• Arrays: Prefixed with * followed by the element count

This project is open source and available under the MIT License.