{"data":{"slug":"redis","name":"Redis","tagline":"The in-memory data store everyone uses","category":"databases","categoryName":"Databases","url":"https://redis.io","github":"https://github.com/redis/redis","pricing":"open-source","hook":"Redis is the cache, queue, and session store you already need.","whatsGood":"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.","theCatch":"License: not MIT. Since Redis 8 the server is tri-licensed RSALv2 / SSPLv1 / AGPLv3 at your choice — AGPLv3 is the only OSI option and carries network copyleft; 7.4–7.x was RSALv2/SSPLv1 only. If you need BSD-3 Redis-protocol, look at Valkey. Memory-bound storage is expensive at scale. Persistence options have tradeoffs. Clustering adds complexity.","verdict":"The default choice for caching and session storage.","addedAt":"2026-08-19","featured":false,"domain":"Databases","subSpecialty":"Data","subcategory":"Key-Value & Cache","tags":["self-host","source-available","workflows","active"],"capabilities":[],"surfaces":["Self-host"],"ecosystem":["Multi-platform"],"licenseModel":"RSALv2/SSPLv1/AGPLv3","githubStars":77026,"starsPerWeek":84,"access":"free","archived":false,"repo":{"createdAt":"2009-03-21","pushedAt":"2026-10-21","license":"NOASSERTION","archived":false,"checkedAt":"2026-10-21"}},"related":[{"slug":"supabase","name":"Supabase","tagline":"Open-source Firebase alternative built on Postgres"},{"slug":"turso","name":"Turso","tagline":"SQLite at the edge with libSQL"},{"slug":"upstash","name":"Upstash","tagline":"Serverless Redis and Kafka"},{"slug":"pinecone","name":"Pinecone","tagline":"Vector database for AI applications"},{"slug":"qdrant","name":"Qdrant","tagline":"Open-source vector database with filtering"}],"links":{"self":"/api/gems/redis","html":"/gems/redis","markdown":"/gems/redis.md","category":"/api/gems?category=databases","categoryPage":"/stacks/databases"}}