Debug-action-cache

[debug] Compressing 1,234 files (245MB) [debug] Archive segmented into 3 parts [debug] Uploading part 1/3... If you see a segmentation error (e.g., Part 2 failed to upload ), you have a network issue or a file that changed during compression (race condition). A common mistake is mis-specifying the path . The debug log will show exactly what is being archived:

- name: Generate cache key simulation id: sim run: | echo "hash=$(sha256sum package-lock.json | cut -d' ' -f1)" >> $GITHUB_OUTPUT - name: Attempt Cache Restore with Full Debug uses: actions/cache@v4 with: path: node_modules key: debug-$ runner.os -$ steps.sim.outputs.hash restore-keys: debug-$ runner.os - - name: Manual inspection run: | echo "=== CACHE DEBUG REPORT ===" echo "Node modules exist? $([ -d node_modules ] && echo 'YES' || echo 'NO')" echo "Count: $(find node_modules -type f 2>/dev/null | wc -l)" debug-action-cache

That is the difference between guessing and knowing. Happy debugging. The debug log will show exactly what is

In the world of modern DevOps, speed is currency. Every minute your Continuous Integration (CI) pipeline runs costs money and slows down developer feedback loops. GitHub Actions introduced caching to solve this—storing dependencies like node_modules , pip , or apt packages to avoid re-downloading them on every run. In the world of modern DevOps, speed is currency