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Docs: clarify incompatibility with setup-java caching

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Fixes #725
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Daz DeBoer 2023-08-16 14:26:17 -06:00 committed by GitHub
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@ -46,8 +46,6 @@ However, the `gradle-build-action` offers a number of advantages over this appro
The `gradle-build-action` is designed to provide these benefits with minimal configuration. The `gradle-build-action` is designed to provide these benefits with minimal configuration.
These features work both when Gradle is executed via the `gradle-build-action` and for any Gradle execution in subsequent steps. These features work both when Gradle is executed via the `gradle-build-action` and for any Gradle execution in subsequent steps.
When using `gradle-build-action` we recommend that you _not_ use `actions/cache` or `actions/setup-java@v3` to explicitly cache the Gradle User Home. Doing so may interfere with the caching provided by this action.
## Use a specific Gradle version ## Use a specific Gradle version
The `gradle-build-action` can download and install a specified Gradle version, adding this installed version to the PATH. The `gradle-build-action` can download and install a specified Gradle version, adding this installed version to the PATH.
@ -204,6 +202,17 @@ Caching is enabled by default. You can disable caching for the action as follows
```yaml ```yaml
cache-disabled: true cache-disabled: true
``` ```
### Incompatibility with other caching mechanisms
When using `gradle-build-action` we recommend that you avoid using other mechanisms to save and restore the Gradle User Home.
Specifically:
- Avoid using `actions/cache` configured to cache the Gradle User Home, [as described in this example](https://github.com/actions/cache/blob/main/examples.md#java---gradle).
- Avoid using `actions/setup-java` with the `cache: gradle` option, [as described here](https://github.com/actions/setup-java#caching-gradle-dependencies).
Using either of these mechanisms may interfere with the caching provided by this action. If you choose to use a different mechanism to save and restore the Gradle User Home, you should disable the caching provided by this action, as described above.
### Cache keys ### Cache keys
Distributions downloaded to satisfy a `gradle-version` parameter are stored outside of Gradle User Home and cached separately. The cache key is unique to the downloaded distribution and will not change over time. Distributions downloaded to satisfy a `gradle-version` parameter are stored outside of Gradle User Home and cached separately. The cache key is unique to the downloaded distribution and will not change over time.