Debug-action-cache

If you do not have administrative access to delete caches via the UI or CLI, you can force a global cache bust directly within your YAML file. Introduce an arbitrary versioning variable into your cache key string:

Look for the [debug] restoreKeys line:

Add a debug step to examine what was actually restored: debug-action-cache

If you're compiling binaries, ensure you strip timestamps from the output, as these will change the file hash even if the code is identical. The Cost of Ignoring Cache Issues If you do not have administrative access to

Avoid reading arbitrary environment variables inside build scripts. If you must use them, explicitly declare them in the build configuration files so the system knows to track them. If you must use them, explicitly declare them

A common cross-platform trap involves path differences between operating systems. If you develop on macOS or Windows but your CI/CD runner uses ubuntu-latest , hardcoded paths will break.