https://rohit-garg.me/tags/performance/Recent content in Performance on Rohit GargHugoen© Rohit GargWed, 27 May 2026 10:00:00 +0530https://rohit-garg.me/redis-big-key-outage/Wed, 27 May 2026 10:00:00 +0530https://rohit-garg.me/redis-big-key-outage/<p>A Redis outage is not always caused by Redis being down.</p> <p>Sometimes Redis is alive, accepting connections, and returning results. The problem is that one request path has quietly become expensive enough to slow everything behind it. In a microservice architecture, a Redis big key can spread latency through worker pools, connection pools, retry loops, and database fallbacks until the symptom looks nothing like the cause.</p>