Redis Clone (Java)

A lightweight Redis re-implementation in Java, built to understand the internals of Redis such as event loops, data structures, persistence, and replication.

Overview

This project implements core Redis functionality from scratch, focusing on performance, networking, and system design concepts behind an in-memory data store.

Features

• Non-blocking Event Loop with I/O multiplexing
• Core Data Structures
  • Strings
  • Lists
  • Hashes
  • Sorted Sets (ZSets)
  • GeoSpatial data
• Pub/Sub messaging
• Streams
• Transactions
• Asynchronous Master–Slave Replication
• Append-Only File (AOF) Persistence

Tech Stack

• Language: Java
• Build Tool: Maven
• Networking: Java NIO
• Containerization: Docker & Docker Compose

Getting Started

1. Clone the Repository

git clone https://github.com/NullPointer-01/redis-clone.git

cd redis-clone

mvn clean package

java -jar target/redis-clone.jar

docker build -t redis-clone .
docker run -p 6379:6379 redis-clone

docker-compose up

2. Example Usage

redis-cli -p 6379

SET user:1 Alice
GET user:1

LPUSH tasks "build redis clone"
HSET profile name Alice age 24

MULTI
SET a 10
SET b 20
EXEC