Debug-action-cache -
Are you seeing specific in a particular build system like Bazel or GitHub Actions , or
Use flags to prevent compilers from adding timestamps to output binaries.
: Once a cache is saved with a specific key, it cannot be updated. If your dependencies change but your key doesn't, you'll keep pulling old data. Branch Scoping
The Debug Action Cache offers several benefits, including: debug-action-cache
Use the Build Event Protocol to check the canonical command line and ensure configuration consistency 2.2.3. Summary Table: Action Cache Debugging Workflow bazel clean Start from a clean state. bazel build --execution_log_compact_file=1.log Create log of run 1. bazel build --execution_log_compact_file=2.log Create log of run 2 (no changes). Compare 1.log vs 2.log Find the "dirty" action 2.2.3. bazel aquery on dirty action Inspect inputs, toolchain, and environment. Fix non-hermetic inputs Make the action deterministic.
- name: List Repository Caches env: GH_TOKEN: $ secrets.GITHUB_TOKEN run: | gh cache list --limit 50
: Use developer command-line interfaces to query cache layers programmatically. For instance, you can leverage the GitHub CLI to view or purge entries directly from your terminal: Are you seeing specific in a particular build
: Caches are scoped by branch. A cache created on a feature branch is not accessible to other feature branches, but all branches can access the default branch Stack Overflow 3. Debugging Cache Misses
use backslashes ( C:\Users\runneradmin\.npm ) and case-insensitive paths.
Use flags like --experimental_explain_actions , --verbose_failures , and --execution_log_json_file . Branch Scoping The Debug Action Cache offers several
A broken or inefficient action cache turns a high-performance development pipeline into a frustrating bottleneck. By understanding how cache keys are calculated and utilizing verbose execution logs to isolate non-deterministic inputs, you can confidently debug any debug-action-cache workflow anomaly. Keep your inputs explicit, your environments isolated, and your builds predictably fast.
In modern Continuous Integration and Continuous Deployment (CI/CD) pipelines, speed is everything. Software engineering teams heavily rely on caching mechanisms to eliminate redundant steps like reinstalling vendor packages or recompiling static assets. However, when a cache breaks, developers face , corrupted dependencies , and ballooning build times .
Are you experiencing (slow builds) or poisoned cache hits (stale/broken artifacts)?
Enter the concept of . While not a single, pre-built command in every CI system, this phrase represents a critical workflow pattern—the systematic process of inspecting, verifying, and troubleshooting the cache layers generated by CICD actions (primarily in GitHub Actions, but applicable to GitLab CI, CircleCI, and Jenkins).
