# Redis

> The in-memory data store everyone uses

**Category:** Databases  
**Pricing:** open-source  
**URL:** https://redis.io  
**GitHub:** https://github.com/redis/redis  
**Added:** 2026-08-19

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## The Hook

Redis is the cache, queue, and session store you already need.

## What's Good

Blazing fast for what it does. Data structures beyond simple key-value unlock powerful patterns. Pub/sub enables real-time features. The ecosystem is massive—every language has a client.

## The Catch

Memory-bound storage is expensive at scale. Persistence options have tradeoffs. The licensing changes caused uncertainty. Clustering adds complexity.

## Verdict

The default choice for caching and session storage.