This series finale presents a universal 6-step SOP for Java production troubleshooting, a bottom-up layered diagnosis model, a quick-reference guide for 10 common failure patterns with symptoms, root causes, and tools, plus five golden principles for incident handling.
This article provides a step-by-step guide to troubleshooting CPU 100% incidents in production, covering Linux CPU metrics, Java GC and thread analysis with jstat/jstack/Arthas, system-level tools like perf and flame graphs, and a detailed case study where MySQL backup-induced replica lag triggered cascading Full GCs and CPU saturation.
This tutorial walks Java developers through using VisualVM to monitor JVM threads, memory, and CPU, demonstrates how to create a memory‑leak scenario, generate heap dumps, and interpret VisualVM and Visual GC data to pinpoint memory‑leak root causes.
This article explores practical methods for optimizing Flink real‑time task resources on Kubernetes, focusing on memory usage analysis via GC logs and message‑processing capacity assessment, proposing automated detection of over‑provisioned memory and CPU, and outlining a workflow for resource adjustment to reduce costs.
