mirror of
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8f1e2e0286
* Bump GitHub actions * Bump Node.js version used to `16.x` in workflows * Bump `actions/upload-artifact@v3`
184 lines
7 KiB
Markdown
184 lines
7 KiB
Markdown
# cache
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This action allows caching dependencies and build outputs to improve workflow execution time.
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[](https://github.com/actions/cache/actions/workflows/workflow.yml)
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## Documentation
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See ["Caching dependencies to speed up workflows"](https://help.github.com/github/automating-your-workflow-with-github-actions/caching-dependencies-to-speed-up-workflows).
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## What's New
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### v3
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* Added support for caching from GHES 3.5.
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* Fixed download issue for files > 2GB during restore.
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* Updated the minimum runner version support from node 12 -> node 16.
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### v2
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* Increased the cache size limit to 10 GB.
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* Added support for multiple paths, [glob patterns](https://github.com/actions/toolkit/tree/main/packages/glob), and single file caches.
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```yaml
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- name: Cache multiple paths
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uses: actions/cache@v3
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with:
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path: |
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~/cache
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!~/cache/exclude
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key: ${{ runner.os }}-${{ hashFiles('**/lockfiles') }}
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```
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* Increased performance and improved cache sizes using `zstd` compression for Linux and macOS runners
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* Allowed caching for all events with a ref. See [events that trigger workflow](https://help.github.com/en/actions/reference/events-that-trigger-workflows) for info on which events do not have a `GITHUB_REF`
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* Released the [`@actions/cache`](https://github.com/actions/toolkit/tree/main/packages/cache) npm package to allow other actions to utilize caching
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* Added a best-effort cleanup step to delete the archive after extraction to reduce storage space
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Refer [here](https://github.com/actions/cache/blob/v1/README.md) for previous versions
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## Usage
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### Pre-requisites
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Create a workflow `.yml` file in your repositories `.github/workflows` directory. An [example workflow](#example-workflow) is available below. For more information, reference the GitHub Help Documentation for [Creating a workflow file](https://help.github.com/en/articles/configuring-a-workflow#creating-a-workflow-file).
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If you are using this inside a container, a POSIX-compliant `tar` needs to be included and accessible in the execution path.
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### Inputs
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* `path` - A list of files, directories, and wildcard patterns to cache and restore. See [`@actions/glob`](https://github.com/actions/toolkit/tree/main/packages/glob) for supported patterns.
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* `key` - An explicit key for restoring and saving the cache
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* `restore-keys` - An ordered list of keys to use for restoring the cache if no cache hit occurred for key
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### Outputs
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* `cache-hit` - A boolean value to indicate an exact match was found for the key
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> See [Skipping steps based on cache-hit](#Skipping-steps-based-on-cache-hit) for info on using this output
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### Cache scopes
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The cache is scoped to the key and branch. The default branch cache is available to other branches.
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See [Matching a cache key](https://help.github.com/en/actions/configuring-and-managing-workflows/caching-dependencies-to-speed-up-workflows#matching-a-cache-key) for more info.
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### Example workflow
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```yaml
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name: Caching Primes
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on: push
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jobs:
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build:
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runs-on: ubuntu-latest
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steps:
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- uses: actions/checkout@v3
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- name: Cache Primes
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id: cache-primes
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uses: actions/cache@v3
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with:
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path: prime-numbers
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key: ${{ runner.os }}-primes
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- name: Generate Prime Numbers
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if: steps.cache-primes.outputs.cache-hit != 'true'
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run: /generate-primes.sh -d prime-numbers
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- name: Use Prime Numbers
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run: /primes.sh -d prime-numbers
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```
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## Implementation Examples
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Every programming language and framework has its own way of caching.
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See [Examples](examples.md) for a list of `actions/cache` implementations for use with:
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- [C# - NuGet](./examples.md#c---nuget)
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- [D - DUB](./examples.md#d---dub)
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- [Deno](./examples.md#deno)
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- [Elixir - Mix](./examples.md#elixir---mix)
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- [Go - Modules](./examples.md#go---modules)
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- [Haskell - Cabal](./examples.md#haskell---cabal)
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- [Haskell - Stack](./examples.md#haskell---stack)
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- [Java - Gradle](./examples.md#java---gradle)
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- [Java - Maven](./examples.md#java---maven)
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- [Node - npm](./examples.md#node---npm)
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- [Node - Lerna](./examples.md#node---lerna)
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- [Node - Yarn](./examples.md#node---yarn)
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- [OCaml/Reason - esy](./examples.md#ocamlreason---esy)
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- [PHP - Composer](./examples.md#php---composer)
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- [Python - pip](./examples.md#python---pip)
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- [Python - pipenv](./examples.md#python---pipenv)
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- [R - renv](./examples.md#r---renv)
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- [Ruby - Bundler](./examples.md#ruby---bundler)
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- [Rust - Cargo](./examples.md#rust---cargo)
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- [Scala - SBT](./examples.md#scala---sbt)
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- [Swift, Objective-C - Carthage](./examples.md#swift-objective-c---carthage)
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- [Swift, Objective-C - CocoaPods](./examples.md#swift-objective-c---cocoapods)
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- [Swift - Swift Package Manager](./examples.md#swift---swift-package-manager)
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## Creating a cache key
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A cache key can include any of the contexts, functions, literals, and operators supported by GitHub Actions.
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For example, using the [`hashFiles`](https://help.github.com/en/actions/reference/context-and-expression-syntax-for-github-actions#hashfiles) function allows you to create a new cache when dependencies change.
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```yaml
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- uses: actions/cache@v3
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with:
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path: |
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path/to/dependencies
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some/other/dependencies
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key: ${{ runner.os }}-${{ hashFiles('**/lockfiles') }}
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```
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Additionally, you can use arbitrary command output in a cache key, such as a date or software version:
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```yaml
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# http://man7.org/linux/man-pages/man1/date.1.html
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- name: Get Date
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id: get-date
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run: |
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echo "::set-output name=date::$(/bin/date -u "+%Y%m%d")"
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shell: bash
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- uses: actions/cache@v3
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with:
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path: path/to/dependencies
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key: ${{ runner.os }}-${{ steps.get-date.outputs.date }}-${{ hashFiles('**/lockfiles') }}
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```
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See [Using contexts to create cache keys](https://help.github.com/en/actions/configuring-and-managing-workflows/caching-dependencies-to-speed-up-workflows#using-contexts-to-create-cache-keys)
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## Cache Limits
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A repository can have up to 10GB of caches. Once the 10GB limit is reached, older caches will be evicted based on when the cache was last accessed. Caches that are not accessed within the last week will also be evicted.
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## Skipping steps based on cache-hit
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Using the `cache-hit` output, subsequent steps (such as install or build) can be skipped when a cache hit occurs on the key.
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Example:
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```yaml
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steps:
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- uses: actions/checkout@v3
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- uses: actions/cache@v3
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id: cache
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with:
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path: path/to/dependencies
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key: ${{ runner.os }}-${{ hashFiles('**/lockfiles') }}
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- name: Install Dependencies
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if: steps.cache.outputs.cache-hit != 'true'
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run: /install.sh
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```
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> Note: The `id` defined in `actions/cache` must match the `id` in the `if` statement (i.e. `steps.[ID].outputs.cache-hit`)
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## Contributing
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We would love for you to contribute to `actions/cache`, pull requests are welcome! Please see the [CONTRIBUTING.md](CONTRIBUTING.md) for more information.
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## License
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The scripts and documentation in this project are released under the [MIT License](LICENSE)
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