See ["Caching dependencies to speed up workflows"](https://help.github.com/github/automating-your-workflow-with-github-actions/caching-dependencies-to-speed-up-workflows).
## What's New
* Added support for multiple paths, [glob patterns](https://github.com/actions/toolkit/tree/main/packages/glob), and single file caches.
* Increased performance and improved cache sizes using `zstd` compression for Linux and macOS runners
* 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`
* Released the [`@actions/cache`](https://github.com/actions/toolkit/tree/main/packages/cache) npm package to allow other actions to utilize caching
* Added a best-effort cleanup step to delete the archive after extraction to reduce storage space
Refer [here](https://github.com/actions/cache/blob/v1/README.md) for previous versions
## Usage
### Pre-requisites
@ -39,13 +8,15 @@ Create a workflow `.yml` file in your repositories `.github/workflows` directory
* `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.
* `key` - An explicit key for restoring and saving the cache
* `restore-keys` - An ordered list of keys to use for restoring the cache if no cache hit occurred for key
- [Swift - Swift Package Manager](./examples.md#swift---swift-package-manager)
Install the dependencies
```bash
$ npm install
```
## Creating a cache key
Build the typescript and package it for distribution
```bash
$ npm run build && npm run package
```
A cache key can include any of the contexts, functions, literals, and operators supported by GitHub Actions.
Run the tests :heavy_check_mark:
```bash
$ npm test
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.
Update the action.yml with your name, description, inputs and outputs for your action.
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)
See the [documentation](https://help.github.com/en/articles/metadata-syntax-for-github-actions)
## Cache Limits
## Change the Code
A repository can have up to 5GB of caches. Once the 5GB 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.
Most toolkit and CI/CD operations involve async operations so the action is run in an async function.
## Skipping steps based on cache-hit
```javascript
import * as core from '@actions/core';
...
Using the `cache-hit` output, subsequent steps (such as install or build) can be skipped when a cache hit occurs on the key.
See the [toolkit documentation](https://github.com/actions/toolkit/blob/master/README.md#packages) for the various packages.
- name: Install Dependencies
if: steps.cache.outputs.cache-hit != 'true'
run: /install.sh
```
## Publish to a Distribution Branch
> Note: The `id` defined in `actions/cache` must match the `id` in the `if` statement (i.e. `steps.[ID].outputs.cache-hit`)
Actions are run from GitHub repos so we will checkin the packed dist folder.
```bash
$ npm run all
$ git add -A
$ git commit -m "your commit message"
$ git tag v[version from package.json]
$ git push origin v[version from package.json]
```
## Contributing
We would love for you to contribute to `actions/cache`, pull requests are welcome! Please see the [CONTRIBUTING.md](CONTRIBUTING.md) for more information.
Your action is now published! :rocket:
## License
The scripts and documentation in this project are released under the [MIT License](LICENSE)
See the [versioning documentation](https://github.com/actions/toolkit/blob/master/docs/action-versioning.md)