echo "=== DEBUG ACTION CACHE ===" echo "Current time: $(date)" echo "Cache path: $CACHE_PATH" echo "Expected lockfile hash: $EXPECTED_HASH"
Is USER or HOSTNAME being sucked into the action?
: Go to Settings > Actions > Caches in your repository to see total size and individual keys. debug-action-cache
If you see a Cache Hit but your build fails due to missing or outdated packages, your cache key logic is faulty. It is failing to detect changes in your dependency configuration files (such as package-lock.json , Gemfile.lock , or go.sum ). 3. Inspect the Cache Key Generation
An action cache works on a simple principle: if the inputs to a command (source files, environment variables, and toolchain versions) haven't changed, the output should be identical. The system generates a unique hash based on these inputs. If that hash exists in the cache, the system skips the execution and pulls the stored result. echo "=== DEBUG ACTION CACHE ===" echo "Current
key: v2-$ runner.os -node-$ hashFiles('**/package-lock.json') Use code with caution.
To prevent the need for intense debugging sessions in the future, build your workflows with these defensive caching strategies: It is failing to detect changes in your
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.
You haven’t changed any dependencies, yet the CI pipeline insists on downloading the entire internet on every single commit.