Redis – In-Memory Data Store

Redis is an open-source, in-memory data structure store used as a database, cache, message broker, and streaming engine. Its speed and versatility make it essential for high-performance applications.

Key Features

• Data Structures: Strings, hashes, lists, sets, sorted sets
• Persistence: RDB snapshots and AOF logging
• Pub/Sub: Real-time messaging capabilities
• Clustering: Horizontal scaling support
• Lua Scripting: Server-side scripting

Installation

Install Redis on Ubuntu:

sudo apt update
sudo apt install redis-server
sudo systemctl enable redis-server
sudo systemctl start redis-server

Usage Examples

Basic Redis operations:

# Connect to Redis
redis-cli

# String operations
SET user:1:name "John"
GET user:1:name

# Hash operations
HSET user:1 name "John" email "john@example.com"
HGETALL user:1

# Set expiration
SETEX session:abc123 3600 "session_data"

Benefits

Redis provides sub-millisecond response times for caching and real-time applications. Its simple commands and rich data structures enable rapid development of high-performance systems.

Download Redis