CI/CD automates building, testing, and deploying code. A well-designed pipeline catches bugs early and enables frequent, reliable releases.
GitHub Actions Basics
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Complete Pipeline
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Matrix Testing
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Caching Strategies
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E2E Testing
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Security Scanning
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Release Workflow
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Deployment Strategies
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Reusable Workflows
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Best Practices
Pipeline Design:
✓ Fail fast - run quick checks first
✓ Parallelize independent jobs
✓ Cache dependencies aggressively
✓ Use matrix builds for compatibility
Testing:
✓ Run unit tests on every commit
✓ Run integration tests before merge
✓ Run E2E tests before deploy
✓ Include security scanning
Deployment:
✓ Use environment protection
✓ Require approvals for production
✓ Implement rollback capability
✓ Monitor after deployment
Conclusion
Good CI/CD pipelines are fast, reliable, and provide clear feedback. Start simple with linting and testing, then add deployment automation. Invest in caching and parallelization to keep pipelines fast as your codebase grows.