jobs: debug-cache: runs-on: ubuntu-latest env: ACTIONS_STEP_DEBUG: ${} ACTIONS_RUNNER_DEBUG: $ 'false' steps: - uses: actions/checkout@v4

Run the build a second time after a minor change or on a different machine.

- name: Restore cache id: cache-restore uses: actions/cache/restore@v3 with: path: vendor/bundle key: $ runner.os -gems-$ hashFiles('Gemfile.lock') restore-keys: $ runner.os -gems-

The first line of defense is . GitHub Actions supports two environment variables that unlock detailed logs:

A particularly tricky failure is when the save phase fails silently or with an error about exceeding the storage quota. A repository has a 10GB limit for all its caches combined.

Demystifying debug-action-cache : How to Troubleshoot CI/CD Build Flakiness and Cache Misses

- name: Report cache metrics run: | if [ -d "node_modules" ]; then echo "cache_status=hit" >> $GITHUB_OUTPUT else echo "cache_status=miss" >> $GITHUB_OUTPUT fi

The Debug Action Cache is a mechanism designed to improve the efficiency of debugging processes by caching the results of expensive debug actions. This allows developers to quickly retrieve previously computed results, reducing the time and resources required for debugging.

This helps you verify if the cache key you expect to exist actually exists in the backend.

You can visually verify if the package-lock.json hash generated a 3-day-old cache or a 3-week-old cache.

To debug an action cache effectively, a developer must move from guessing to empirical comparison.

The debug logs will reveal the internal logic of this process. You will be able to see:

Debug-action-cache [cracked] | 1080p |

jobs: debug-cache: runs-on: ubuntu-latest env: ACTIONS_STEP_DEBUG: ${} ACTIONS_RUNNER_DEBUG: $ 'false' steps: - uses: actions/checkout@v4

Run the build a second time after a minor change or on a different machine.

- name: Restore cache id: cache-restore uses: actions/cache/restore@v3 with: path: vendor/bundle key: $ runner.os -gems-$ hashFiles('Gemfile.lock') restore-keys: $ runner.os -gems-

The first line of defense is . GitHub Actions supports two environment variables that unlock detailed logs: debug-action-cache

A particularly tricky failure is when the save phase fails silently or with an error about exceeding the storage quota. A repository has a 10GB limit for all its caches combined.

Demystifying debug-action-cache : How to Troubleshoot CI/CD Build Flakiness and Cache Misses

- name: Report cache metrics run: | if [ -d "node_modules" ]; then echo "cache_status=hit" >> $GITHUB_OUTPUT else echo "cache_status=miss" >> $GITHUB_OUTPUT fi A repository has a 10GB limit for all its caches combined

The Debug Action Cache is a mechanism designed to improve the efficiency of debugging processes by caching the results of expensive debug actions. This allows developers to quickly retrieve previously computed results, reducing the time and resources required for debugging.

This helps you verify if the cache key you expect to exist actually exists in the backend.

You can visually verify if the package-lock.json hash generated a 3-day-old cache or a 3-week-old cache. This helps you verify if the cache key

To debug an action cache effectively, a developer must move from guessing to empirical comparison.

The debug logs will reveal the internal logic of this process. You will be able to see: