The correct option is The action saves a new cache at the end of the job if the run finishes successfully.

This is how the cache action works when there is a miss in GitHub Actions. If no cache entry matches the key then the step proceeds without restored files. After the job completes successfully it saves a new cache at the end of the job if the run finishes successfully so future runs with the same key can restore it.

The action stops the workflow when the cache is missing is incorrect. A cache miss does not fail the step and the workflow continues normally.

The action searches other repositories to find a compatible cache is incorrect. Caches are scoped to the repository and runner environment and the action restores only from that scope or using restore keys within the same scope.

The action requires a maintainer to manually create or upload a cache before continuing is incorrect. The action manages cache creation automatically after a successful job and no manual upload is required.

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