This guide walks you through a practical 10‑minute workflow to optimize Nginx reverse‑proxy timeouts, configure upstream connection pools, tune Linux kernel parameters, verify improvements with load testing, set up monitoring and alerts, and ensure secure, reliable roll‑back procedures.
A detailed post‑mortem of a three‑time service outage reveals how hidden bugs, frequent FullGC, a saturated connection pool, and an unindexed slow SQL query crippled a Spring Boot backend, and shows the step‑by‑step troubleshooting, temporary fixes, and lasting improvements applied.
This article recounts a real‑world investigation of a MySQL high‑availability outage where HikariCP connections appeared to dead‑lock, detailing the architecture, observed symptoms, code analysis, thread‑dump findings, and the final fix of adding socket timeout parameters to the JDBC URL.
When a high‑traffic Dubbo interface began throwing thread‑pool exhaustion errors, the team traced the issue to Redis request spikes, identified mis‑configured connection‑pool parameters and version‑specific bugs, and applied a series of quick fixes, pool‑size adjustments, and client‑side optimizations that dramatically reduced latency and error rates.
