Java Performance

A focused toolkit for JVM performance work that covers the essentials: GC tuning presets for different scenarios (G1, ZGC, Serial), profiling commands using jstack and jmap, and JMH benchmarking setup. The quick reference format is solid here because performance tuning is usually urgent and you need the right flags fast. It's bonded as a secondary skill to an advanced Java agent, which makes sense since you're typically optimizing existing code rather than writing from scratch. The GC comparison table is genuinely useful for deciding between collectors based on your heap size and latency requirements. Most valuable when you're facing memory leaks, GC pauses, or need to optimize container deployments where resource constraints matter.

Install to Claude Code

npx -y skills add pluginagentmarketplace/custom-plugin-java --skill java-performance --agent claude-code