redis-expert

Redis distributed locks use atomic key setting with TTL for safe concurrent access. This Skill guides you through implementing distributed locks correctly, ensuring reliable resource synchronization while avoiding common race conditions and deadlocks.

Redis sorted sets provide the best way to build real-time leaderboards using `ZADD` and `ZRANGEBYSCORE`. This Skill guides you on leveraging sorted sets for efficient score management and fast retrieval in gaming applications.

Redis Lua scripting improves performance by executing multiple commands atomically on the server to reduce network round-trips. This Skill helps optimize Redis usage by writing efficient Lua scripts that work safely within the single-threaded event loop model.

The KEYS command blocks the Redis single-threaded event loop, causing severe latency spikes in production. This Skill warns against such pitfalls and recommends safe alternatives like SCAN for iterating over keys without degrading performance.

Redis Pub/Sub is needed for message brokering when building real-time data processing and event distribution systems. This Skill explains common messaging patterns, helping you design efficient Pub/Sub workflows while understanding limitations regarding persistent message delivery.

Storing large binary blobs in Redis is discouraged because it wastes memory and degrades overall performance. This Skill guides users toward efficient caching strategies, recommending smaller data chunks and proper cache-aside patterns with TTL for optimal memory management.