1. 3.1 Redis Thread Modelhistorical

    Redis's Reactor model, its single-threaded command execution, why it is fast, and Redis 6.x multi-threaded I/O.

  2. 3.2 Redis Concurrency Competitionhistorical

    The Redis concurrency-competition problem and solutions using atomic commands, mutexes, optimistic locking, and Lua scripts.

  3. 3.3 Redis Slow Querieshistorical

    Redis command execution flow, slow-query configuration and commands, and the in-memory FIFO implementation.

  4. 3.4 Redis Blockinghistorical

    What Redis blocking is, how to discover it, and internal and external causes including complex commands, CPU saturation, persistence, swap, and network problems.

  5. 3.5 Redis bigkeyhistorical

    What a Redis big key is, its risks, how to find and delete it, and the basic mitigation of splitting it into smaller keys.

  6. 3.6 Redis hotkeyhistorical

    What a Redis hot key is, how to discover it, and how to mitigate it through key replication or local caching.