Micro Frontends Best Practices: Do’s and Don’ts You Need to Know

In recent years of web development, architectural approaches like Micro Frontends have gained significant traction. Micro Frontends advocate for the decomposition of a web application into small, independently deployable frontend applications, each responsible for a distinct feature or functionality. While this approach offers numerous advantages such as flexibility, scalability, and parallel development, it also comes with its own set of challenges and pitfalls.

In this guide, we’ll explore the essential do’s and don’ts to help you craft exceptional user experiences with Micro Frontends.

Do’s of Micro Frontends: Top 10 Essentials to Craft Exceptional User Experience

1. Decompose UI into Micro Frontends Appropriately

Break down the application’s UI into smaller and self-contained applications in a way that each micro frontend represents a cohesive piece of functionality or a bounded context within the application. Each micro frontend should be able to be developed and deployed separately.

2. Ensure Consistent UI/UX

Define and adhere to UI/UX guidelines for the entire application to ensure the consistent and seamless User Experience in spite of having separate micro frontends.

3. Embrace Technology Agnosticism

Empower teams to choose the best technologies and frameworks for their micro frontends, allowing flexibility and innovation. For example, one team might prefer React while another might choose Angular.

4. Error Handling

Plan for a robust error handling to avoid failure of the entire application due to failure of one micro frontend. Consider scenarios such as unavailability of any micro frontend, network failure, etc. Implement failure resiliency and fallback mechanism.

5. Ensure Version Compatibility of the Dependencies

Ensure that the versions of the dependencies such as external libraries in each micro frontend are compatible with one another. Try to use the same version of such libraries in each micro frontend whenever possible.

6. Cross-Cutting Concerns

Managing cross-cutting concerns such as authentication, authorization, routing, and state management across multiple micro frontends can be complex.

7. Automate Testing

Implement unit tests in each micro frontend to make sure it works correctly. Additionally, implement integration tests and end to end tests to make sure the application as whole works as desired.

8. Automate Deployment

Implement CI/CD (Continuous Integration and Delivery) pipelines to automate the build, testing and deployment for faster, smoother and error-free releases.

9. Effective Cross-Team Collaboration

Since multiple autonomous teams are involved in micro frontends development, the cross-team collaboration becomes crucial. Make sure each team communicates regularly for either progress reports or knowledge sharing.

10. Consider Business Evolution

Just as a company’s products and services can evolve, so too can its micro frontend architecture. It’s important to have a flexible approach to micro frontend development, so that the architecture can be adjusted as the needs of the business change.

Don’ts of Micro Frontends: 4 Common Mistakes to Avoid

1. Avoid Tight Coupling Between Micro Frontends

If the application is decomposed into micro frontends incorrectly without clear boundaries, they may depend too much on one another resulting in tight coupling. Avoid this situation since this will cause issues in development and deployment.

2. Avoid UI Framework/Library Specific Solution for Communication Between Micro Frontends

While it makes it easier to use framework/library specific solutions to communicate between micro frontends, it introduces dependencies on that specific framework/library to be used in all such micro frontends. Avoid using such solutions whenever possible. If it’s absolutely certain that each micro frontend will be using the same UI framework/library then the framework/library specific solution may be acceptable.

3. Don’t Ignore Performance Considerations

Optimize the performance of each micro frontend and the overall application to provide a seamless user experience. Employ techniques such as code splitting, lazy loading, caching etc.

4. Don’t Avoid Documenting

Since multiple micro frontends and multiple teams are involved, not having proper documentation would make cross team collaboration hard. It would also make onboarding new team members slow and painful.