ci-cd.md

CI/CD (Continuous Integration & Continuous Deployment)

Overview

CI/CD automates building, testing, and deploying your application, ensuring faster and more reliable releases.

Recommended Tools

• GitHub Actions (or GitLab CI, Jenkins, etc.)
• Maven for build and test automation
• Docker for containerization (optional)
• Heroku, AWS, Azure, or other cloud providers for deployment

Example Workflow

1. On push or pull request:

   • Checkout code
   • Set up Java and Maven
   • Run tests (mvn test)
   • Build the application (mvn clean package)
   • Optionally build/push Docker image

2. On main branch merge:

   • Deploy to staging or production environment

Example GitHub Actions Workflow

name: Java CI

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

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - name: Set up JDK 17
        uses: actions/setup-java@v3
        with:
          java-version: '17'
          distribution: 'temurin'
      - name: Build with Maven
        run: mvn clean package
      - name: Run tests
        run: mvn test

Best Practices

• Run tests on every commit.
• Use secrets for sensitive data (e.g., database credentials, JWT secret).
• Automate deployment to reduce manual errors.
• Monitor deployments and roll back on failure.