https://ikwukao.dev/tags/rate-limiting/Recent content in Rate Limiting on Ikwuka OkoyeHugoen-USMon, 10 Aug 2026 00:00:00 +0000https://ikwukao.dev/journal/redis-rate-limiting-with-lua/Mon, 10 Aug 2026 00:00:00 +0000https://ikwukao.dev/journal/redis-rate-limiting-with-lua/<h2 id="building-distributed-rate-limiting-with-redis-and-lua">Building Distributed Rate Limiting with Redis and Lua</h2> <p>Rate limiting sounds simple until an application runs on more than one machine.</p> <p>A single process can keep a counter in memory.</p> <p>A distributed gateway cannot rely on local state alone.</p> <p>While building Flux-Gateway, I used Redis and Lua scripts to explore how traffic control can remain atomic when multiple gateway instances are operating simultaneously.</p> <h2 id="why-local-rate-limiting-is-not-enough">Why Local Rate Limiting Is Not Enough</h2> <p>Imagine two gateway instances:</p>