Singleton Modules & Versioning
Understand how to ensure only a single instance of a module is loaded and manage version conflicts.
What are Singleton Modules?
In Micro Frontend architectures, a singleton module is a piece of code or a library that should only ever exist as a single instance across your entire application, even if multiple Micro Frontends try to load it.
Think of it as a unique resource that all parts of your system need to share consistently.
- Ensures a single source of truth.
- Prevents conflicting states or behaviors.
Why Singletons Matter for MFEs
Imagine multiple Micro Frontends (MFEs) all loading their own copy of a UI library like React, or a state management library like Redux.
Without singletons, you could end up with:
- Multiple instances of React Context, breaking component communication.
- Separate Redux stores, leading to inconsistent application state.
- Increased bundle size due to duplicate code.
Singletons solve these issues by guaranteeing a unified dependency.
All lessons in this course
- Consuming Shared Dependencies
- Singleton Modules & Versioning
- Dynamic Module Loading
- Sharing State and Utilities Across Remotes