PostgreSQL performance problems are not solved by creating more indexes blindly. This post explains how to read EXPLAIN ANALYZE, when Seq Scan is acceptable, how composite index ordering works, when partial indexes help, and how to tune sorting and pagination queries in practice.
A practical incident guide for diagnosing database connection exhaustion. Covers application pool configuration, slow queries, connection leaks, traffic spikes, and a step-by-step recovery approach.
Step-by-step JVM tuning for Spring Boot production servers. GC algorithm selection, heap sizing, GC logging, OOM response, and container environment pitfalls — all from real-world practice.
Five common memory leak patterns in Spring Boot applications and how to quickly diagnose them with Heap Dump analysis.
Practical tuning methods to reduce Spring Boot application response time. Step-by-step guide covering DB connection pools, JPA optimization, caching, and JVM settings.
From Cloudflare CDN setup to cache rules, Workers, and Page Rules. Real configuration values to maximize your website performance.
How to configure Kubernetes HPA, VPA, KEDA, and Cluster Autoscaler, and when to use each. From CPU/memory-based to custom metrics — with real-world configuration examples.