Debug-action-cache <480p | FHD>

If the hash changes between two runs where you made no dependency changes, an automated script (like an internal linter or formatter) is altering the file mid-run. 4. Leverage Cache Eviction Clearances

If you are running a debug-action-cache routine because your cache is not updating, verify the output of the hashFiles function. If a script or a previous step alters your lockfile before the cache step executes, the generated hash will change every single run. This creates a perpetual cache miss, bloating your build times and consuming your storage quota. 4. Audit Path Encodings and OS Quirks

A classic actions/cache error is the path validation failure: Warning: Path Validation Error: Path(s) specified in the action for caching do(es) not exist, hence no cache is being saved .

Debugging an action cache requires a methodical approach: expose the logs, verify the file paths, audit the integrity of your lockfiles, and ensure your cache keys are truly deterministic. By mastering the debug-action-cache lifecycle, you can transform unstable, sluggish pipelines into high-speed deployment engines. debug-action-cache

: Systems like Next.js and Ruby on Rails cache asset compilation and data fetching layer by layer.

to SSH into the runner while it's paused. This lets you manually check if the files exist in the expected directory after the restore step. Quick Fix Checklist

gh secret set ACTIONS_RUNNER_DEBUG --body true If the hash changes between two runs where

if [ -d "$CACHE_PATH" ]; then echo "✅ Cache directory exists." echo "File count: $(find "$CACHE_PATH" -type f | wc -l)" echo "Total size: $(du -sh "$CACHE_PATH" | cut -f1)" echo "Top 10 largest files:" find "$CACHE_PATH" -type f -exec du -h {} + | sort -rh | head -10 echo "Cache timestamp: $(stat -c %y "$CACHE_PATH")" else echo "❌ Cache directory missing. This is a cache MISS." exit 1 fi

No specific math was used. If I had to pick a formula that relates, it could be: $$time节省 = cache命中率 \times 调试动作时间$$

Standard logs just show Received 0 of 0 artifacts . That is useless. To see the truth, you need , specifically for the cache action. If a script or a previous step alters

To debug action cache hits/misses, you typically use the following flags in your command line:

: Identify "stale" caches that haven't been accessed recently. Branch Scope

: 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:

: Navigate to your repository’s management panel (e.g., Actions > Management > Caches on GitHub) to inspect the exact storage size, creation dates, and branch scopes of your entries.

The Debug Action Cache can be implemented using a variety of techniques, including: