# GitHub Actions Caching {#github-actions-caching}


Optimize CI/CD build times with caching strategies.


## Dependency Caching {#dependency-caching}


```yaml
- uses: actions/setup-node@v4
  with:
    node-version: 20
    cache: "yarn"

# Or manual caching
- uses: actions/cache@v4
  with:
    path: node_modules
    key: ${{ runner.os }}-modules-${{ hashFiles('yarn.lock') }}
    restore-keys: |
      ${{ runner.os }}-modules-
```


## NX Build Cache {#nx-build-cache}


```yaml
- uses: actions/cache@v4
  with:
    path: .nx/cache
    key: ${{ runner.os }}-nx-${{ hashFiles('yarn.lock') }}-${{ github.sha }}
    restore-keys: |
      ${{ runner.os }}-nx-${{ hashFiles('yarn.lock') }}-
      ${{ runner.os }}-nx-
```


## Docker Layer Caching {#docker-layer-caching}


```yaml
- uses: docker/build-push-action@v5
  with:
    cache-from: type=gha
    cache-to: type=gha,mode=max
```


## Cache Strategy Table {#cache-strategy-table}


| Asset           | Key Based On      | TTL    |
| --------------- | ----------------- | ------ |
| node_modules    | yarn.lock hash    | 7 days |
| NX cache        | yarn.lock + SHA   | 7 days |
| Docker layers   | Dockerfile + deps | Auto   |
| Build artifacts | Source hash       | 1 day  |


## Impact {#impact}


| Without Cache  | With Cache   | Savings |
| -------------- | ------------ | ------- |
| ~8 min install | ~30s restore | ~93%    |
| ~10 min build  | ~2 min       | ~80%    |
| ~5 min Docker  | ~1 min       | ~80%    |


## Related Pages {#related-pages}


- [CI/CD Pipeline](https://sourcey-gauzy.pages.dev/deployment/ci-cd/cicd-pipeline-guide/index.md) — CI setup
- [CI Test Pipeline](https://sourcey-gauzy.pages.dev/testing/ci-test-pipeline/index.md) — test CI
- [Docker Optimization](https://sourcey-gauzy.pages.dev/devops/docker-optimization/index.md) — Docker builds