This article provides a comprehensive, real-world case study of JVM garbage collection (GC) tuning applied to a provincial earthquake emergency response system. The system, which processes seismic data to generate assessment reports and thematic maps, faced stability issues including unexpected restarts and missing map outputs. The author systematically diagnoses the root causes, explores JVM heap and GC parameter configurations, and presents the tuning decisions that resolved the problems. Key topics include GC algorithm selection (G1, CMS, Parallel), heap sizing strategies, and monitoring approaches. The case study is particularly valuable for backend engineers and SREs working on latency-sensitive or data-intensive Java applications, offering reusable patterns and a methodological approach to GC optimization.
A detailed case study on JVM GC tuning for a mission-critical earthquake response system, covering diagnosis, parameter selection, and stability improvements.