← Theory library

Redis theory

In-memory data structures, Redlock distributed locking, and atomic Lua scripts.

Practise in the Code Lab →

Easy

1. In-Memory Data StructuresStrings, Hashes, Lists, Sets, and Sorted Sets (ZSET).
3. Expiration, Eviction, and Cache DesignKeeping Redis memory bounded and data useful.

Medium

4. Persistence, Replication, and FailoverBalancing Redis speed with recovery requirements.
5. Streams, Pub/Sub, and Reliable Work QueuesChoosing Redis messaging primitives for delivery guarantees.

Hard

2. Distributed Locking (Redlock) & Atomic Lua ScriptsEliminating race conditions across microservices.