I'd be happy to help you create an architecture plan for splitting your codebase into microfrontends. This approach can be beneficial for large-scale applications, allowing different teams to work independently on separate parts of the application while maintaining a cohesive user experience.

Let's start with a high-level diagram of the microfrontend architecture:

Now, let's break down the architecture plan and discuss each component:

1. Container Application:

   • This is the main application that serves as a shell for your microfrontends.
   • It handles routing and loading of individual microfrontends.
   • Implements a consistent layout, header, and footer across all microfrontends.

2. Microfrontends:

   • Each microfrontend is a separate application focused on a specific feature or domain.
   • They can be developed, tested, and deployed independently.
   • Use a common framework (e.g., React) for consistency, but can potentially use different frameworks if needed.

3. Shared Components:

   • A library of reusable UI components and utilities.
   • Ensures consistency in design and functionality across microfrontends.
   • Can include things like buttons, forms, and other common UI elements.

4. API Gateway:

   • Acts as a single entry point for all frontend-to-backend communications.
   • Handles authentication and authorization.
   • Routes requests to appropriate backend services.

5. Backend Services:

   • Separate services that handle specific business logic and data storage.
   • Can be developed and scaled independently.

Now, let's outline the steps to implement this architecture:

1. Set up a monorepo: Use a tool like Turborepo to manage your monorepo structure. This will allow you to keep all your microfrontends and shared code in a single repository while maintaining separation 1.

   my-app/ ├── apps/ │ ├── container/ │ ├── microfrontend1/ │ ├── microfrontend2/ │ └── microfrontend3/ ├── packages/ │ ├── shared-components/ │ └── shared-utils/ └── package.json
2. Create the container application: This will be your main entry point. Use Next.js with the App Router for optimal performance and easy routing 1.
3. Develop microfrontends: Each microfrontend should be a separate Next.js application. Use dynamic imports or Module Federation to load them into the container application.
4. Implement shared components: Create a package for shared components using a tool like Storybook for development and documentation.
5. Set up the API Gateway: Use a solution like Next.js API Routes or a separate Node.js application with Express to create your API Gateway.
6. Develop backend services: Create separate services for different domains of your application. These can be developed using various technologies as needed.
7. Implement CI/CD: Set up a CI/CD pipeline that can build and deploy each microfrontend independently, as well as the container application.
8. Monitoring and analytics: Implement centralized logging and monitoring to track performance and issues across all microfrontends.

Here's an example of how you might structure your container application to load microfrontends:

This approach allows you to load each microfrontend dynamically and independently, with fallback UI while they're loading.

Remember that implementing a microfrontend architecture is a significant undertaking and may introduce complexity. It's most beneficial for large applications with multiple teams working on different features. For smaller applications, a monolithic approach might be more appropriate.

By following this architecture plan, you'll be able to split your codebase into microfrontends, allowing for independent development and deployment of different parts of your application while maintaining a cohesive user experience.