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2026-08-22 12:49:53 +02:00 · 2026-01-27 17:35:45 -05:00
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+# GitHub Actions Workflow Patterns
+
+## Reusable Workflows
+
+### Caller Workflow
+```yaml
+jobs:
+  call-workflow:
+    uses: org/repo/.github/workflows/reusable.yml@main
+    with:
+      environment: production
+    secrets:
+      deploy_key: ${{ secrets.DEPLOY_KEY }}
+```
+
+### Reusable Workflow
+```yaml
+# .github/workflows/reusable.yml
+name: Reusable Deploy
+
+on:
+  workflow_call:
+    inputs:
+      environment:
+        required: true
+        type: string
+    secrets:
+      deploy_key:
+        required: true
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - run: ./deploy.sh ${{ inputs.environment }}
+```
+
+## Matrix Builds
+
+```yaml
+strategy:
+  matrix:
+    os: [ubuntu-latest, windows-latest, macos-latest]
+    node: [18, 20]
+    exclude:
+      - os: macos-latest
+        node: 18
+    include:
+      - os: ubuntu-latest
+        node: 20
+        experimental: true
+  fail-fast: false
+
+steps:
+  - uses: actions/setup-node@v4
+    with:
+      node-version: ${{ matrix.node }}
+```
+
+## Environment Protection
+
+```yaml
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    environment:
+      name: production
+      url: https://example.com
+    steps:
+      - run: ./deploy.sh
+```
+
+## Concurrency Control
+
+```yaml
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+```
+
+## Job Dependencies
+
+```yaml
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps: [...]
+    
+  test:
+    needs: build
+    runs-on: ubuntu-latest
+    steps: [...]
+    
+  deploy:
+    needs: [build, test]
+    if: github.ref == 'refs/heads/main'
+    runs-on: ubuntu-latest
+```
+
+## Artifact Sharing
+
+```yaml
+- uses: actions/upload-artifact@v4
+  with:
+    name: build-output
+    path: dist/
+    retention-days: 5
+
+- uses: actions/download-artifact@v4
+  with:
+    name: build-output
+    path: dist/
+```
+
+## Caching
+
+```yaml
+- uses: actions/cache@v4
+  with:
+    path: ~/.npm
+    key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
+    restore-keys: |
+      ${{ runner.os }}-node-
+```