Micro Frontend

Micro Frontend

Why Use Micro Frontend?

• Scalability: Different teams can work on different parts of the frontend without conflicts.
• Independent Deployment: Each micro frontend can be developed, tested, and deployed separately.
• Technology Flexibility: Different micro frontends can use different frameworks (e.g., React, Vue, Angular).
• Faster Development: Teams can work in parallel, reducing bottlenecks.

How Does It Work? 

• Decomposing the UI: The frontend is split into smaller components based on features or business domains (e.g., cart, search, user profile).
• Separate Repositories & Deployments: Each micro frontend is managed as an independent project.
• Integration Approaches:
  • Build-time Integration: Combine micro frontends at build time.
  • Run-time Integration: Load micro frontends dynamically using iframes, JavaScript modules, or Web Components.
  • Server-side Composition: Assemble the micro frontends on the server before sending them to the client.
• Communication Between Micro Frontends: Use props, events, or a global state management tool (like Redux or Event Bus).

Popular Tools & Frameworks for Micro Frontend:

• Module Federation (Webpack 5)
• Single SPA
• Bit.dev
• Qiankun
• OpenComponents

Comparison: Micro Frontend vs. Monolithic Frontend vs. Backend

When to Choose Each Approach?

Use Micro Frontend If:

• You have a large application managed by multiple teams.
• You need to deploy different parts of the UI independently.
• You want to use different technologies in different parts of the frontend.
• Your company follows a modular development approach.

Use Monolithic Frontend If:

• Your application is small to medium-sized.
• You want simpler deployment and management.
• A single frontend team is handling development.
• You need faster initial performance without multiple bundles.

Backend is Needed When:

• Your application needs to store and retrieve data from a database.
• You need business logic, authentication, or APIs.
• You want to provide RESTful or GraphQL APIs for frontend applications.