Debug-action-cache

Once enabled, rerun your failed job. The logs for your caching steps will now display internal API calls, cache size metrics, exact download speeds, and storage path resolutions. 2. Verify Cache Hits and Misses

: If the job finishes successfully after a cache miss, the system compresses the targeted directories and uploads them as a new cache entry associated with the primary key. Core Strategies to Debug Action Caches

Understanding how to misses is crucial for maintaining efficient CI/CD systems and fast local development. This article explores why cache misses occur, how to identify them, and how to debug the action cache in Bazel. 1. What is the Bazel Action Cache?

Prune unused caches via the GitHub API or the web UI, and optimize cache paths to exclude unnecessary log directories or temporary text files. 3. Advanced Diagnostic Steps Using the GitHub CLI ( gh )

- name: Cache Packages id: package-cache uses: actions/cache@v4 with: path: vendor/bundle key: $ runner.os -gems-$ hashFiles('**/Gemfile.lock') - name: Install Bundler Gems if: steps:package-cache.outputs.cache-hit != 'true' run: bundle install Use code with caution. debug-action-cache

An is the backbone of any high-performance Continuous Integration (CI) and build system. Whether managing a mono-repo using Bazel or running high-throughput pipelines via GitHub Actions , caching prevents repetitive work by storing intermediate compilation files, dependencies, and test results.

Ensure that your path configuration uses universal glob patterns or platform-specific variables (like $ env.HOME ) to prevent the runner from caching empty directories.

This transparency is the foundation of debug-action-cache .

Would you like a different length or to tailor this for a specific CI system? Once enabled, rerun your failed job

Is this for a (like GitHub Actions, GitLab, or Jenkins)?

The action depends on environment variables (like PATH or USER ) that differ between machines or runs.

: The runner did not find an exact match but found an older version using a fallback prefix.

use forward slashes ( /home/runner/.npm ) and are strictly case-sensitive. Verify Cache Hits and Misses : If the

Advanced Troubleshooting: Evicting and Purging Corrupted Caches

Sometimes the best debug-action-cache tool isn’t a command but a webpage. Go to your repository . You’ll see:

Run your build with --info or --scan (Gradle Build Scans are incredibly powerful for visualizing cache performance).