Ma Wei Says

Apr 23, 2025 · Backend Development

Mastering Redis Counters: INCR/INCRBY vs DECR/DECRBY and Robust Design Patterns

This article explains Redis's atomic counter commands (INCR, INCRBY, DECR, DECRBY), highlights their pitfalls such as missing TTL and concurrency issues, and presents practical design solutions—including SET NX+EX initialization, double‑TTL compensation, retry queues, fallback strategies, and performance optimizations like Lua scripting and pipelining.)