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Add JVM container memory skill and prompt - #84

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rmkr-dev merged 2 commits into
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skillbook/jvm-container-memory-guardrails
Nov 2, 2026
Merged

rmkr-dev merged 2 commits into
mainfrom
skillbook/jvm-container-memory-guardrails

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@rmkr-dev rmkr-dev commented Nov 2, 2026

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Adds a Skillbook entry and a matching Promptbook entry for sizing JVM memory and GC inside Kubernetes containers.

  • Skill jvm-container-memory-guardrails: a memory budget (heap, metaspace, code cache, threads, direct buffers, native, headroom) under the container limit, MaxRAMPercentage instead of -Xmx at the limit, memory request equal to limit, the processor count the JVM sees and accidental SerialGC, collector choice, ExitOnOutOfMemoryError with access-controlled heap dumps, one place for JVM flags, startup CPU, NMT under load, and working-set and OOMKilled alerts.
  • Prompt right-size-jvm-container-memory: effective settings audit, measured budget table, OOMKilled vs Java OOM diagnosis, manifest and image patch, NMT and soak measurement plan, and alerts.

Both are labeled for Copilot, Claude Code, and Codex. Catalogs go to 48/48; node scripts/site-check.mjs passes locally.

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rmkr-dev merged commit 4b2d81a into main Nov 2, 2026
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rmkr-dev deleted the skillbook/jvm-container-memory-guardrails branch November 2, 2026 05:10
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