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Author SHA1 Message Date
Kylie Stradley
7fdef497b9 Merge bdb100fa63 into 9fa7e61ec7 2025-02-12 17:12:48 +01:00
Alessandro Sebastiani
9fa7e61ec7 Update force deletion docs due a recent deprecation (#1500)
* fix: update force deletion docs due a recent deprecation

* fix: applied josh's suggestions

---------

Co-authored-by: Josh Gross <joshmgross@github.com>
2025-02-12 10:49:34 -05:00
Kylie Stradley
bdb100fa63 Add Recommended Permissions
To reduce risk of over-privileged tokens, we are adding recommended permissions to popular GitHub-owned Actions READMEs
2025-01-21 21:12:13 -05:00
Tobbe Lundberg
36f1e144e1 docs: Make the "always save prime numbers" example more clear (#1525) 2025-01-09 23:36:56 +00:00
janco-absa
53aa38c736 Correct GitHub Spelling in caching-strategies.md (#1526)
GitHub was spelled incorrectly 3 lines under the Understanding how to choose path section
2025-01-06 16:55:00 +00:00
4 changed files with 25 additions and 22 deletions

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@@ -335,6 +335,14 @@ There are a number of community practices/workarounds to fulfill specific requir
Please note that Windows environment variables (like `%LocalAppData%`) will NOT be expanded by this action. Instead, prefer using `~` in your paths which will expand to the HOME directory. For example, instead of `%LocalAppData%`, use `~\AppData\Local`. For a list of supported default environment variables, see the [Learn GitHub Actions: Variables](https://docs.github.com/en/actions/learn-github-actions/variables#default-environment-variables) page.
# Recommended Permissions
The `actions/cache` workflow relies on an internal authentication pattern and does not use the GITHUB_TOKEN, to reduce risk of over-privileged token, jobs that use `actions/cache` should set permissions to none:
```yaml
permissions: {}
```
## 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.

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@@ -102,7 +102,7 @@ The [GitHub Context](https://docs.github.com/en/actions/learn-github-actions/con
While setting paths for caching dependencies it is important to give correct path depending on the hosted runner you are using or whether the action is running in a container job. Assigning different `path` for save and restore will result in cache miss.
Below are GiHub hosted runner specific paths one should take care of when writing a workflow which saves/restores caches across OS.
Below are GitHub hosted runner specific paths one should take care of when writing a workflow which saves/restores caches across OS.
#### Ubuntu Paths

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@@ -79,8 +79,10 @@ To avoid saving a cache that already exists, the `cache-hit` output from a resto
The `cache-primary-key` output from the restore step should also be used to ensure
the cache key does not change during the build if it's calculated based on file contents.
Here's an example where we imagine we're calculating a lot of prime numbers and want to cache them:
```yaml
name: Always Caching Primes
name: Always Caching Prime Numbers
on: push
@@ -91,23 +93,23 @@ jobs:
steps:
- uses: actions/checkout@v4
- name: Restore cached Primes
id: cache-primes-restore
- name: Restore cached Prime Numbers
id: cache-prime-numbers-restore
uses: actions/cache/restore@v4
with:
key: ${{ runner.os }}-primes
key: ${{ runner.os }}-prime-numbers
path: |
path/to/dependencies
some/other/dependencies
# Intermediate workflow steps
- name: Always Save Primes
id: cache-primes-save
if: always() && steps.cache-primes-restore.outputs.cache-hit != 'true'
- name: Always Save Prime Numbers
id: cache-prime-numbers-save
if: always() && steps.cache-prime-numbers-restore.outputs.cache-hit != 'true'
uses: actions/cache/save@v4
with:
key: ${{ steps.cache-primes-restore.outputs.cache-primary-key }}
key: ${{ steps.cache-prime-numbers-restore.outputs.cache-primary-key }}
path: |
path/to/dependencies
some/other/dependencies

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@@ -37,9 +37,8 @@ From `v3.2.3` cache is cross-os compatible when `enableCrossOsArchive` input is
## Force deletion of caches overriding default cache eviction policy
Caches have [branch scope restriction](https://docs.github.com/en/actions/using-workflows/caching-dependencies-to-speed-up-workflows#restrictions-for-accessing-a-cache) in place. This means that if caches for a specific branch are using a lot of storage quota, it may result into more frequently used caches from `default` branch getting thrashed. For example, if there are many pull requests happening on a repo and are creating caches, these cannot be used in default branch scope but will still occupy a lot of space till they get cleaned up by [eviction policy](https://docs.github.com/en/actions/using-workflows/caching-dependencies-to-speed-up-workflows#usage-limits-and-eviction-policy). But sometime we want to clean them up on a faster cadence so as to ensure default branch is not thrashing. In order to achieve this, [gh-actions-cache cli](https://github.com/actions/gh-actions-cache/) can be used to delete caches for specific branches.
Caches have [branch scope restriction](https://docs.github.com/en/actions/using-workflows/caching-dependencies-to-speed-up-workflows#restrictions-for-accessing-a-cache) in place. This means that if caches for a specific branch are using a lot of storage quota, it may result into more frequently used caches from `default` branch getting thrashed. For example, if there are many pull requests happening on a repo and are creating caches, these cannot be used in default branch scope but will still occupy a lot of space till they get cleaned up by [eviction policy](https://docs.github.com/en/actions/using-workflows/caching-dependencies-to-speed-up-workflows#usage-limits-and-eviction-policy). But sometime we want to clean them up on a faster cadence so as to ensure default branch is not thrashing.
This workflow uses `gh-actions-cache` to delete all the caches created by a branch.
<details>
<summary>Example</summary>
@@ -60,29 +59,23 @@ jobs:
actions: write
contents: read
steps:
- name: Check out code
uses: actions/checkout@v4
- name: Cleanup
run: |
gh extension install actions/gh-actions-cache
REPO=${{ github.repository }}
BRANCH=refs/pull/${{ github.event.pull_request.number }}/merge
echo "Fetching list of cache key"
cacheKeysForPR=$(gh actions-cache list -R $REPO -B $BRANCH | cut -f 1 )
cacheKeysForPR=$(gh cache list --ref $BRANCH --limit 100 --json id --jq '.[].id')
## Setting this to not fail the workflow while deleting cache keys.
## Setting this to not fail the workflow while deleting cache keys.
set +e
echo "Deleting caches..."
for cacheKey in $cacheKeysForPR
do
gh actions-cache delete $cacheKey -R $REPO -B $BRANCH --confirm
gh cache delete $cacheKey
done
echo "Done"
env:
GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
GH_REPO: ${{ github.repository }}
BRANCH: refs/pull/${{ github.event.pull_request.number }}/merge
```
</details>