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* Add Swift - SPM to examples * Add link SPM example link to readme * remove extra newline * remove another extra newline
111 lines
3.9 KiB
Markdown
111 lines
3.9 KiB
Markdown
# cache
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This action allows caching dependencies and build outputs to improve workflow execution time.
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<a href="https://github.com/actions/cache/actions?query=workflow%3ATests"><img alt="GitHub Actions status" src="https://github.com/actions/cache/workflows/Tests/badge.svg?branch=master&event=push"></a>
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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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## 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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### Inputs
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* `path` - A directory to store and save the cache
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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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### 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@v1
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- name: Cache Primes
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id: cache-primes
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uses: actions/cache@v1
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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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- [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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- [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 - Yarn](./examples.md#node---yarn)
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- [PHP - Composer](./examples.md#php---composer)
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- [Python - pip](./examples.md#python---pip)
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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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## Cache Limits
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A repository can have up to 2GB of caches. Once the 2GB 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@v1
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- uses: actions/cache@v1
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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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