#CI/CD Fundamentals

Understand the principles of continuous integration and deployment.


#CI/CD Pipeline

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#Continuous Integration (CI)

PracticeDescription
Frequent commitsIntegrate code multiple times a day
Automated buildsBuild on every commit
Automated testsRun tests automatically
Fast feedbackKnow issues within minutes
Single sourceOne main branch

#Continuous Deployment vs Delivery

CD TypeDescription
Continuous DeliveryAutomated deployment to staging, manual approval to production
Continuous DeploymentFully automated to production

#Pipeline Best Practices

  1. Fast builds - Under 10 minutes
  2. Fail fast - Run quick tests first
  3. Idempotent - Same input, same output
  4. Immutable artifacts - Build once, deploy many
  5. Environment parity - Same config across environments
  6. Rollback capability - Easy to revert

#Deployment Strategies

StrategyDescriptionRisk
RollingGradual replacementLow
Blue/GreenSwitch between environmentsLow
CanarySmall % of traffic firstVery Low
RecreateStop old, start newHigh

[!TIP] Pro Tip: Start with Continuous Delivery, graduate to Continuous Deployment!