GitHub Actions vs Jenkins Comparison

# GitHub Actions — Node.js CI/CD pipeline
name: CI/CD Pipeline

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]

jobs:
  test:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        node-version: [18, 20, 22]
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with:
          node-version: \${{ matrix.node-version }}
          cache: 'npm'
      - run: npm ci
      - run: npm test
      - run: npm run build

  deploy:
    needs: test
    runs-on: ubuntu-latest
    if: github.ref == 'refs/heads/main'
    steps:
      - uses: actions/checkout@v4
      - run: echo "Deploying to production..."

// Jenkins — Declarative Pipeline (Jenkinsfile)
pipeline {
  agent any

  tools {
    nodejs '20'
  }

  stages {
    stage('Checkout') {
      steps {
        checkout scm
      }
    }
    stage('Dependencies') {
      steps {
        sh 'npm ci'
      }
    }
    stage('Test') {
      parallel {
        stage('Unit') { steps { sh 'npm test' } }
        stage('Lint')  { steps { sh 'npm run lint' } }
      }
    }
    stage('Build') {
      steps { sh 'npm run build' }
    }
    stage('Deploy') {
      when { branch 'main' }
      steps { sh './scripts/deploy.sh' }
    }
  }
  post {
    failure { mail to: '[email protected]', subject: 'Build Failed' }
  }
}