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document incremental build cache in builder docs #522

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document incremental build cache in builder docs
js-9 Oct 21, 2025
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js-9 Oct 21, 2025
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18 changes: 18 additions & 0 deletions docs/03-github/04-builder.mdx
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Expand Up @@ -109,6 +109,7 @@ Builds can now be downloaded as Artifacts in the Actions tab.

## Caching

### Library cache
In order to make builds run faster, you can cache Library files from previous builds. To do so
simply add Github Actions official [cache action](https://github.com/marketplace/actions/cache)
before any unity steps.
Expand All @@ -127,6 +128,23 @@ Example:

This simple addition could speed up your build by more than 50%.

### Incremental build cache
To further speedup consequent builds, you may want to cache the incremental build cache directory.
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Copilot AI Oct 21, 2025

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Corrected spelling of 'speedup' to 'speed up' (two words when used as a verb).

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To further speedup consequent builds, you may want to cache the incremental build cache directory.
To further speed up consequent builds, you may want to cache the incremental build cache directory.

Copilot uses AI. Check for mistakes.

Example:

```yaml
- uses: actions/cache@v3
with:
path: $HOME/work/_temp/_github_home/.cache/unity3d/bee
key: IncrementalBuildCache-MyProjectName-TargetPlatform
restore-keys: |
IncrementalBuildCache-MyProjectName-
IncrementalBuildCache-
```

On a windows runner (e.g. if building for il2cpp) this path is different, but the incremental build cache is automatically saved with the Library folder.
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Copilot AI Oct 21, 2025

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Capitalize 'Windows' and 'IL2CPP' for consistency with technical naming conventions.

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On a windows runner (e.g. if building for il2cpp) this path is different, but the incremental build cache is automatically saved with the Library folder.
On a Windows runner (e.g. if building for IL2CPP) this path is different, but the incremental build cache is automatically saved with the Library folder.

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## Configuration options

Below options can be specified under `with:` for the `unity-builder` action.
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