cache/examples.md

Examples

• Bun
• C# - NuGet
• Clojure - Lein Deps
• D - DUB
  • POSIX
  • Windows
• Deno
  • Linux
  • macOS
  • Windows
• Elixir - Mix
• Erlang - Rebar3
• Go - Modules
  • Linux
  • macOS
  • Windows
• Haskell - Cabal
• Haskell - Stack
• Java - Gradle
• Java - Maven
• Node - npm
• Node - Lerna
• Node - Yarn
• Node - Yarn 2
• OCaml/Reason - esy
• PHP - Composer
• Python - pip
  • Simple example
  • Multiple OS's in a workflow
  • Multiple OS's in a workflow with a matrix
  • Using pip to get cache location
• Python - pipenv
• R - renv
• Ruby - Bundler
• Rust - Cargo
• Scala - SBT
• Swift, Objective-C - Carthage
• Swift, Objective-C - CocoaPods
• Swift - Swift Package Manager
• Swift - Mint
• * - Bazel

Bun

- uses: actions/cache@v4
  with:
    path: |
            ~/.bun/install/cache
    key: ${{ runner.os }}-bun-${{ hashFiles('**/bun.lockb') }}

Windows

- uses: actions/cache@v4
  with:
    path: |
            ~\.bun
    key: ${{ runner.os }}-bun-${{ hashFiles('**/bun.lockb') }}

C# - NuGet

Using NuGet lock files:

- uses: actions/cache@v4
  with:
    path: ~/.nuget/packages
    key: ${{ runner.os }}-nuget-${{ hashFiles('**/packages.lock.json') }}
    restore-keys: |
            ${{ runner.os }}-nuget-

Depending on the environment, huge packages might be pre-installed in the global cache folder. With actions/cache@v4 you can now exclude unwanted packages with exclude pattern

- uses: actions/cache@v4
  with:
    path: |
      ~/.nuget/packages
      !~/.nuget/packages/unwanted      
    key: ${{ runner.os }}-nuget-${{ hashFiles('**/packages.lock.json') }}
    restore-keys: |
            ${{ runner.os }}-nuget-

Or you could move the cache folder like below.

Note This workflow does not work for projects that require files to be placed in user profile package folder

env:
  NUGET_PACKAGES: ${{ github.workspace }}/.nuget/packages
steps:
  - uses: actions/cache@v4
    with:
      path: ${{ github.workspace }}/.nuget/packages
      key: ${{ runner.os }}-nuget-${{ hashFiles('**/packages.lock.json') }}
      restore-keys: |
                ${{ runner.os }}-nuget-

Clojure - Lein Deps

- name: Cache lein project dependencies
  uses: actions/cache@v4
  with:
    path: ~/.m2/repository
    key: ${{ runner.os }}-clojure-${{ hashFiles('**/project.clj') }}
    restore-keys: |
            ${{ runner.os }}-clojure

D - DUB

POSIX

- uses: actions/cache@v4
  with:
    path: ~/.dub
    key: ${{ runner.os }}-dub-${{ hashFiles('**/dub.selections.json') }}
    restore-keys: |
            ${{ runner.os }}-dub-

Windows

- uses: actions/cache@v4
  with:
    path: ~\AppData\Local\dub
    key: ${{ runner.os }}-dub-${{ hashFiles('**/dub.selections.json') }}
    restore-keys: |
            ${{ runner.os }}-dub-

Deno

Linux

- uses: actions/cache@v4
  with:
    path: |
      ~/.deno
      ~/.cache/deno      
    key: ${{ runner.os }}-deno-${{ hashFiles('**/deps.ts') }}

macOS

- uses: actions/cache@v4
  with:
    path: |
      ~/.deno
      ~/Library/Caches/deno      
    key: ${{ runner.os }}-deno-${{ hashFiles('**/deps.ts') }}

Windows

- uses: actions/cache@v4
  with:
    path: |
      ~\.deno
      ~\AppData\Local\deno      
    key: ${{ runner.os }}-deno-${{ hashFiles('**/deps.ts') }}

Elixir - Mix

- uses: actions/cache@v4
  with:
    path: |
      deps
      _build      
    key: ${{ runner.os }}-mix-${{ hashFiles('**/mix.lock') }}
    restore-keys: |
            ${{ runner.os }}-mix-

Erlang - Rebar3

- uses: actions/cache@v2
  with:
    path: |
      ~/.cache/rebar3
      _build      
    key: ${{ runner.os }}-erlang-${{ env.OTP_VERSION }}-${{ hashFiles('**/*rebar.lock') }}
    restore-keys: |
            ${{ runner.os }}-erlang-${{ env.OTP_VERSION }}-

Go - Modules

Linux

- uses: actions/cache@v4
  with:
    path: |
      ~/.cache/go-build
      ~/go/pkg/mod      
    key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
    restore-keys: |
            ${{ runner.os }}-go-

macOS

- uses: actions/cache@v4
  with:
    path: |
      ~/Library/Caches/go-build
      ~/go/pkg/mod      
    key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
    restore-keys: |
            ${{ runner.os }}-go-

Windows

- uses: actions/cache@v4
  with:
    path: |
      ~\AppData\Local\go-build
      ~\go\pkg\mod      
    key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
    restore-keys: |
            ${{ runner.os }}-go-

Haskell - Cabal

We cache the elements of the Cabal store separately, as the entirety of ~/.cabal can grow very large for projects with many dependencies.

- name: Cache ~/.cabal/packages, ~/.cabal/store and dist-newstyle
  uses: actions/cache@v4
  with:
    path: |
      ~/.cabal/packages
      ~/.cabal/store
      dist-newstyle      
    key: ${{ runner.os }}-${{ matrix.ghc }}-${{ hashFiles('**/*.cabal', '**/cabal.project', '**/cabal.project.freeze') }}
    restore-keys: ${{ runner.os }}-${{ matrix.ghc }}-

Haskell - Stack

Linux or macOS

- uses: actions/cache@v4
  name: Cache ~/.stack
  with:
    path: ~/.stack
    key: ${{ runner.os }}-stack-global-${{ hashFiles('stack.yaml') }}-${{ hashFiles('package.yaml') }}
    restore-keys: |
            ${{ runner.os }}-stack-global-
- uses: actions/cache@v4
  name: Cache .stack-work
  with:
    path: .stack-work
    key: ${{ runner.os }}-stack-work-${{ hashFiles('stack.yaml') }}-${{ hashFiles('package.yaml') }}-${{ hashFiles('**/*.hs') }}
    restore-keys: |
            ${{ runner.os }}-stack-work-

Windows

- uses: actions/cache@v4
  name: Cache %APPDATA%\stack %LOCALAPPDATA%\Programs\stack
  with:
    path: |
      ~\AppData\Roaming\stack
      ~\AppData\Local\Programs\stack          
    key: ${{ runner.os }}-stack-global-${{ hashFiles('stack.yaml') }}-${{ hashFiles('package.yaml') }}
    restore-keys: |
            ${{ runner.os }}-stack-global-
- uses: actions/cache@v4
  name: Cache .stack-work
  with:
    path: .stack-work
    key: ${{ runner.os }}-stack-work-${{ hashFiles('stack.yaml') }}-${{ hashFiles('package.yaml') }}-${{ hashFiles('**/*.hs') }}
    restore-keys: |
            ${{ runner.os }}-stack-work-

Java - Gradle

Note Ensure no Gradle daemons are running anymore when your workflow completes. Creating the cache package might fail due to locks being held by Gradle. Refer to the Gradle Daemon documentation on how to disable or stop the Gradle Daemons.

- uses: actions/cache@v4
  with:
    path: |
      ~/.gradle/caches
      ~/.gradle/wrapper      
    key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
    restore-keys: |
            ${{ runner.os }}-gradle-

Java - Maven

- name: Cache local Maven repository
  uses: actions/cache@v4
  with:
    path: ~/.m2/repository
    key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
    restore-keys: |
            ${{ runner.os }}-maven-

Node - npm

For npm, cache files are stored in ~/.npm on Posix, or ~\AppData\npm-cache on Windows, but it's possible to use npm config get cache to find the path on any platform. See the npm docs for more details.

If using npm config to retrieve the cache directory, ensure you run actions/setup-node first to ensure your npm version is correct. After deprecation of save-state and set-output commands, the correct way to set output is using ${GITHUB_OUTPUT}. For linux, we can use ${GITHUB_OUTPUT} whereas for windows we need to use ${env:GITHUB_OUTPUT} due to two different default shells in these two different OS ie bash and pwsh respectively.

Note It is not recommended to cache node_modules, as it can break across Node versions and won't work with npm ci

Get npm cache directory using same shell

Bash shell

- name: Get npm cache directory
  id: npm-cache-dir
  shell: bash
  run: echo "dir=$(npm config get cache)" >> ${GITHUB_OUTPUT}

PWSH shell

- name: Get npm cache directory
  id: npm-cache-dir
  shell: pwsh
  run: echo "dir=$(npm config get cache)" >> ${env:GITHUB_OUTPUT}

Get npm cache directory step can then be used with actions/cache as shown below

- uses: actions/cache@v4
  id: npm-cache # use this to check for `cache-hit` ==> if: steps.npm-cache.outputs.cache-hit != 'true'
  with:
    path: ${{ steps.npm-cache-dir.outputs.dir }}
    key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
    restore-keys: |
            ${{ runner.os }}-node-

Node - Lerna

- name: restore lerna
  uses: actions/cache@v4
  with:
    path: '**/node_modules'
    key: ${{ runner.os }}-${{ hashFiles('**/yarn.lock') }}

Node - Yarn

The yarn cache directory will depend on your operating system and version of yarn. See https://yarnpkg.com/lang/en/docs/cli/cache/ for more info.

- name: Get yarn cache directory path
  id: yarn-cache-dir-path
  run: echo "dir=$(yarn cache dir)" >> $GITHUB_OUTPUT

- uses: actions/cache@v4
  id: yarn-cache # use this to check for `cache-hit` (`steps.yarn-cache.outputs.cache-hit != 'true'`)
  with:
    path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
    key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
    restore-keys: |
            ${{ runner.os }}-yarn-

Node - Yarn 2

The yarn 2 cache directory will depend on your config. See https://yarnpkg.com/configuration/yarnrc#cacheFolder for more info.

- name: Get yarn cache directory path
  id: yarn-cache-dir-path
  run: echo "dir=$(yarn config get cacheFolder)" >> $GITHUB_OUTPUT

- uses: actions/cache@v4
  id: yarn-cache # use this to check for `cache-hit` (`steps.yarn-cache.outputs.cache-hit != 'true'`)
  with:
    path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
    key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
    restore-keys: |
            ${{ runner.os }}-yarn-

OCaml/Reason - esy

Esy allows you to export built dependencies and import pre-built dependencies.

    - name: Restore Cache
      id: restore-cache
      uses: actions/cache@v4
      with:
        path: _export
        key:  ${{ runner.os }}-esy-${{ hashFiles('esy.lock/index.json') }}
        restore-keys: |
                    ${{ runner.os }}-esy-
    - name: Esy install
      run: 'esy install'
    - name: Import Cache
      run: |
        esy import-dependencies _export
        rm -rf _export        

    ...(Build job)...

    # Re-export dependencies if anything has changed or if it is the first time
    - name: Setting dependency cache
      run: |
                esy export-dependencies
      if: steps.restore-cache.outputs.cache-hit != 'true'

PHP - Composer

- name: Get Composer Cache Directory
  id: composer-cache
  run: |
        echo "dir=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT
- uses: actions/cache@v4
  with:
    path: ${{ steps.composer-cache.outputs.dir }}
    key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
    restore-keys: |
            ${{ runner.os }}-composer-

Python - pip

For pip, the cache directory will vary by OS. See https://pip.pypa.io/en/stable/reference/pip_install/#caching

Locations:

• Ubuntu: ~/.cache/pip
• Windows: ~\AppData\Local\pip\Cache
• macOS: ~/Library/Caches/pip

Simple example

- uses: actions/cache@v4
  with:
    path: ~/.cache/pip
    key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
    restore-keys: |
            ${{ runner.os }}-pip-

Replace ~/.cache/pip with the correct path if not using Ubuntu.

Multiple OS's in a workflow

- uses: actions/cache@v4
  if: startsWith(runner.os, 'Linux')
  with:
    path: ~/.cache/pip
    key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
    restore-keys: |
            ${{ runner.os }}-pip-

- uses: actions/cache@v4
  if: startsWith(runner.os, 'macOS')
  with:
    path: ~/Library/Caches/pip
    key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
    restore-keys: |
            ${{ runner.os }}-pip-

- uses: actions/cache@v4
  if: startsWith(runner.os, 'Windows')
  with:
    path: ~\AppData\Local\pip\Cache
    key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
    restore-keys: |
            ${{ runner.os }}-pip-

Multiple OS's in a workflow with a matrix

jobs:
  build:
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-latest, macos-latest, windows-latest]
        include:
        - os: ubuntu-latest
          path: ~/.cache/pip
        - os: macos-latest
          path: ~/Library/Caches/pip
        - os: windows-latest
          path: ~\AppData\Local\pip\Cache
    steps:
    - uses: actions/cache@v4
      with:
        path: ${{ matrix.path }}
        key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
        restore-keys: |
                  ${{ runner.os }}-pip-

Using pip to get cache location

Note This requires pip 20.1+

- name: Get pip cache dir
  id: pip-cache
  shell: bash
  run: |
        echo "dir=$(pip cache dir)" >> $GITHUB_OUTPUT

- name: pip cache
  uses: actions/cache@v4
  with:
    path: ${{ steps.pip-cache.outputs.dir }}
    key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
    restore-keys: |
            ${{ runner.os }}-pip-

Python - pipenv

- name: Set up Python
  # The actions/cache step below uses this id to get the exact python version
  id: setup-python
  uses: actions/setup-python@v2

  ⋮

- uses: actions/cache@v4
  with:
    path: ~/.local/share/virtualenvs
    key: ${{ runner.os }}-python-${{ steps.setup-python.outputs.python-version }}-pipenv-${{ hashFiles('Pipfile.lock') }}

R - renv

For renv, the cache directory will vary by OS. The RENV_PATHS_ROOT environment variable is used to set the cache location. Have a look at https://rstudio.github.io/renv/reference/paths.html#details for more details.

- name: Set RENV_PATHS_ROOT
  shell: bash
  run: |
        echo "RENV_PATHS_ROOT=${{ runner.temp }}/renv" >> $GITHUB_ENV
- name: Install and activate renv
  run: |
    install.packages("renv")
    renv::activate()    
  shell: Rscript {0}
- name: Get R and OS version
  id: get-version
  run: |
    cat("##[set-output name=os-version;]", sessionInfo()$running, "\n", sep = "")
    cat("##[set-output name=r-version;]", R.Version()$version.string, sep = "")    
  shell: Rscript {0}
- name: Restore Renv package cache
  uses: actions/cache@v4
  with:
    path: ${{ env.RENV_PATHS_ROOT }}
    key: ${{ steps.get-version.outputs.os-version }}-${{ steps.get-version.outputs.r-version }}-${{ inputs.cache-version }}-${{ hashFiles('renv.lock') }}
    restore-keys: ${{ steps.get-version.outputs.os-version }}-${{ steps.get-version.outputs.r-version }}-${{inputs.cache-version }}-

Ruby - Bundler

Caching gems with Bundler correctly is not trivial and just using actions/cache is not enough.

Instead, it is recommended to use ruby/setup-ruby's bundler-cache: true option whenever possible:

- uses: ruby/setup-ruby@v1
  with:
    ruby-version: ...
    bundler-cache: true

Rust - Cargo

- uses: actions/cache@v4
  with:
    path: |
      ~/.cargo/bin/
      ~/.cargo/registry/index/
      ~/.cargo/registry/cache/
      ~/.cargo/git/db/
      target/      
    key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}

Scala - SBT

- name: Cache SBT
  uses: actions/cache@v4
  with:
    path: |
      ~/.ivy2/cache
      ~/.sbt      
    key: ${{ runner.os }}-sbt-${{ hashFiles('**/build.sbt') }}

Swift, Objective-C - Carthage

- uses: actions/cache@v4
  with:
    path: Carthage
    key: ${{ runner.os }}-carthage-${{ hashFiles('**/Cartfile.resolved') }}
    restore-keys: |
            ${{ runner.os }}-carthage-

Swift, Objective-C - CocoaPods

- uses: actions/cache@v4
  with:
    path: Pods
    key: ${{ runner.os }}-pods-${{ hashFiles('**/Podfile.lock') }}
    restore-keys: |
            ${{ runner.os }}-pods-

Swift - Swift Package Manager

- uses: actions/cache@v4
  with:
    path: .build
    key: ${{ runner.os }}-spm-${{ hashFiles('**/Package.resolved') }}
    restore-keys: |
            ${{ runner.os }}-spm-

Swift - Mint

env:
  MINT_PATH: .mint/lib
  MINT_LINK_PATH: .mint/bin
steps:
  - uses: actions/cache@v4
    with:
      path: .mint
      key: ${{ runner.os }}-mint-${{ hashFiles('**/Mintfile') }}
      restore-keys: |
                ${{ runner.os }}-mint-

* - Bazel

bazelisk does not have be to separately downloaded and installed because it's already included in GitHub's ubuntu-latest and macos-latest base images.

Linux

- name: Cache Bazel
  uses: actions/cache@v4
  with:
    path: |
            ~/.cache/bazel
    key: ${{ runner.os }}-bazel-${{ hashFiles('.bazelversion', '.bazelrc', 'WORKSPACE', 'WORKSPACE.bazel', 'MODULE.bazel') }}
    restore-keys: |
            ${{ runner.os }}-bazel-
- run: bazelisk test //...

macOS

- name: Cache Bazel
  uses: actions/cache@v4
  with:
    path: |
            /private/var/tmp/_bazel_runner/
    key: ${{ runner.os }}-bazel-${{ hashFiles('.bazelversion', '.bazelrc', 'WORKSPACE', 'WORKSPACE.bazel', 'MODULE.bazel') }}
    restore-keys: |
            ${{ runner.os }}-bazel-
- run: bazelisk test //...