{
  "id": "java-jvm-performance-and-gc",
  "name": "java-jvm-performance-and-gc",
  "version": "0.1.0",
  "type": "skill",
  "provider": "java",
  "harnesses": [
    "codex",
    "claude-code",
    "cursor",
    "gemini",
    "kiro",
    "other"
  ],
  "summary": "Static review of proposed JVM GC/performance changes for evidence — collector selection (G1/ZGC/Generational ZGC/Shenandoah/Parallel), allocation pressure, heap-sizing flags, and OOM/leak triage from user-supplied GC logs, JFR, and heap-dump analysis output. Refuses GC-switch recommendations without pause-time evidence. Reads source and sanitized configuration only.",
  "source_type": "original",
  "official_docs": [
    "https://docs.oracle.com/en/java/javase/",
    "https://openjdk.org/jeps/248",
    "https://openjdk.org/jeps/439",
    "https://openjdk.org/projects/shenandoah/"
  ],
  "security_notes": "Static review only — reads Java/Kotlin source, JVM startup-flag configuration (launch scripts, Dockerfiles, systemd units, K8s manifests), and user-supplied GC logs, JFR recordings, and heap-dump analysis output (dominator-tree/leak-suspects text, not a raw .hprof binary). Never opens a live process, attaches a profiler or debugger, invokes a JDK tool against a running JVM, or requests/opens a live heap dump. Never requests credentials, connection strings, tenant identifiers, or customer data — ask for sanitized excerpts with placeholders.",
  "last_verified": "2026-07-17",
  "path": "skills/java/java-jvm-performance-and-gc",
  "author": "github: VincentChuWaiChow"
}