Top Highlights

• Jobs on GitHub-hosted runners start in a clean runner image and must download dependencies each time, causing increased network utilization, longer runtime, and increased cost
• Artifacts and caching are similar because they provide the ability to store files on GitHub, but each feature offers different use cases and cannot be used interchangeably.
• The cache action will attempt to restore a cache based on the key you provide. When the action finds a cache, the action restores the cached files to the path you configure.
• A workflow can access and restore a cache created in the current branch, the base branch (including base branches of forked repositories), or the default branch (usually main).
• A list of restore-keys is useful when you are restoring a cache from another branch because restore-keys can partially match cache keys.

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