Debug-action-cache Fixed Jun 2026

To debug the cache effectively, one must understand how it works under the hood.

You can inspect the state of your caches directly in the GitHub web interface to see their size, creation date, and last access. Navigate to your repository on GitHub. In the left sidebar, click under the "Management" section.

You can use the API to confirm whether a cache with your expected key exists, and to check if an older cache is preventing a new one from being saved due to quota limits. Additionally, you can programmatically delete specific caches using their id with a DELETE request, which is very useful for cleaning up outdated or corrupted caches that aren't being evicted properly by the automatic policy.

: It allows you to see if a cache miss was caused by a change in the toolchain, a timestamp in a source file, or an absolute path leak. How to use it in Bazel debug-action-cache

Could you share the from your YAML file?

This ensures the key is unique every time, forcing a cache save operation. Be aware that this approach consumes your cache quota much faster.

Are your file paths absolute or relative? Always prefer relative paths for better portability. To debug the cache effectively, one must understand

When debug mode is on, you’ll see extra lines like:

to convert them to text for comparison (requires Bazel source code), as described in the official Bazel docs:

: This allows you to download a .zip of the exact folder contents to your local machine to verify the files are correct before they are saved to the cache. 4. Troubleshoot "False" Cache Hits In the left sidebar, click under the "Management" section

You can manage and inspect caches directly from your terminal using the GitHub CLI .

: Look for leaked PATH variables or system-specific absolute paths that vary between developer machines or CI runners.