Devops 2- Microservices vs Monolith: Core Differences

Monolith: All components are tightly integrated and run as a single unit. Microservices: Application is broken into independent services, each responsible for a specific business capability.

Benefits of Microservices

  1. Scalability
    • You can scale individual services independently based on demand.
    • Example: Scale only the payment service during festive sales, not the entire app.
  2. Technology Flexibility
    • Each service can use the most suitable tech stack (e.g., .NET for one, Node.js for another).
    • Easier to adopt new technologies without rewriting the whole app.
  3. Faster Development & Deployment
    • Teams can work on different services in parallel.
    • Enables CI/CD pipelines for each service, speeding up releases.
  4. Improved Fault Isolation
    • Failure in one service (e.g., email notification) doesn’t crash the entire system.
    • Easier to debug and recover from issues.
  5. Better Maintainability
    • Smaller codebases are easier to understand, test, and maintain.
    • Encourages clean separation of concerns.
  6. Organizational Alignment
    • Teams can own services end-to-end (DevOps model).
    • Promotes autonomy and accountability.
  7. Optimized Resource Usage
    • Services can be deployed on different infrastructure based on their needs (e.g., AKS for compute-heavy services, serverless for lightweight ones).

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