Debug-action-cache [2021] Jun 2026

accuracy, checking paths, and managing cache keys to resolve cache misses or failed restorations. For detailed guidance, consult the GitHub Actions Caching Documentation Dependency caching reference - GitHub Docs

is a common necessity for optimizing CI/CD pipelines. If you are facing "cache misses" or slow workflows, you can use several built-in methods to troubleshoot the actions/cache mechanism. 1. Enable Verbose Logging debug-action-cache

If your workflow reports a "Cache not found," check these three common failure points: Key Mismatch must be a perfect match. If you use a hash like hashFiles('package-lock.json') accuracy, checking paths, and managing cache keys to

Helps you test key logic without pushing commits. debug-action-cache

| Tool | Purpose | |------|---------| | ACTIONS_RUNNER_DEBUG=true | Full runner logs | | ACTIONS_STEP_DEBUG=true | Step-level cache logs | | gh api /repos/.../actions/caches | List existing caches | | restore-keys with wildcard | Catch similar caches | | lookup-only: true | Test restore without saving |

The next time your CI pipeline slows to a crawl, don't just add npm install again. Become the engineer who says, "I'll run it with debug-action-cache enabled—I’ll see exactly what’s happening under the hood."