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Redis

Redis is an in-memory data store commonly used for caching, queues, sessions, rate limits, and fast counters.

What Is Redis​

Redis stores data in memory for very fast reads and writes.

It supports data structures such as strings, hashes, lists, sets, sorted sets, streams, and pub/sub channels.

How To Use Redis​

Run a Redis server locally or use a hosted provider. Connect from your application with a Redis client library.

Basic Example​

SET user:1:name "Tiew"
GET user:1:name
INCR page:views

Common Concepts​

  • Keys identify stored values.
  • Expiration times make cached values temporary.
  • Data structures support different access patterns.
  • Pub/sub and streams support messaging workflows.

What To Learn Next​

Learn caching patterns, expiration policies, eviction, persistence, streams, queues, and distributed locking.