Use caching when you want to reuse files that don't change often between jobs or workflow runs, such as build dependencies from a package management system. A customer-owned storage solution is only available with GitHub Enterprise Server.Ĭomparing artifacts and dependency cachingĪrtifacts 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. When using self-hosted runners, caches from workflow runs are stored on GitHub-owned cloud storage. Forks of a repository can also create pull requests on the base branch and access caches on the base branch. Anyone with read access can create a pull request on a repository and access the contents of a cache. Also, command line interface (CLI) programs like docker login can save access credentials in a configuration file. For example, sensitive information can include access tokens or login credentials stored in a file in the cache path. We recommend that you don't store any sensitive information in the cache. Warning: Be mindful of the following when using caching with GitHub Actions: Alternatively, if you are caching the package managers listed below, using their respective setup-* actions requires minimal configuration and will create and restore dependency caches for you. The action creates and restores a cache identified by a unique key. To cache dependencies for a job, you can use GitHub's cache action. To help speed up the time it takes to recreate files like dependencies, GitHub can cache files you frequently use in workflows. #GITHUB ACTIONS CACHE DOWNLOAD#
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. For example, package and dependency management tools such as Maven, Gradle, npm, and Yarn keep a local cache of downloaded dependencies. Workflow runs often reuse the same outputs or downloaded dependencies from one run to another.
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