https://github.com/heikkilamarko/micro-frontends-app
A simple micro frontends application written in Svelte and React
https://github.com/heikkilamarko/micro-frontends-app
bootstrap micro-frontends react svelte vite
Last synced: 11 months ago
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A simple micro frontends application written in Svelte and React
- Host: GitHub
- URL: https://github.com/heikkilamarko/micro-frontends-app
- Owner: heikkilamarko
- License: mit
- Created: 2020-06-17T13:09:09.000Z (about 6 years ago)
- Default Branch: main
- Last Pushed: 2025-05-19T16:26:47.000Z (about 1 year ago)
- Last Synced: 2025-05-19T17:37:02.866Z (about 1 year ago)
- Topics: bootstrap, micro-frontends, react, svelte, vite
- Language: JavaScript
- Homepage:
- Size: 1.25 MB
- Stars: 25
- Watchers: 1
- Forks: 6
- Open Issues: 1
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# Micro Frontends App
This repository contains the source code of a simple micro frontends application written in Svelte and React.
## A Brief Introduction to Micro Frontends
- Micro frontends is similar thing on the frontend side, as microservices are on the backend side.
- Applications are composed of a set of well-defined, loosely coupled components.
- We can identify micro frontends in our applications by applying principles, such as _Domain Driven Desing (DDD)_.
- Each micro frontend is owned by a single cross-functional team.
- Easier scaling of teams and projects.
- Smaller scope enables faster onboarding of new teams and team members.
- Teams can more freely pick their technology stack.
- Prevents technology lock-in.
- Makes applications more future-proof by allowing teams to more easily experiment with and migrate to new technologies.
- We get independent updates, so that if one part of the application changes, we only need to update the micro frontend(s) that implement the changed functionality.
- Micro frontends patterns can be very effective when migrating an existing monolithic application to a more modular architecture.
- _Strangler Pattern_ to kill the monolith by eating it piece-by-piece, until there is nothing left from the original implementation.
- Micro frontends is no silver bullet. It comes with its own challenges, such as operational and governance complexity, and possibly bigger payload sizes.
- The important thing is to understand the trade-offs, and make an informed decision on whether to adopt micro frontends in your applications.
### Decision Frameworks
There exist several approaches to implement micro frontends.
Decisions frameworks like the one presented [here](https://medium.com/@lucamezzalira/micro-frontends-decisions-framework-ebcd22256513), can prove to be really useful in the early stages of a project.
### Libraries and Frameworks
Micro frontends continue to gain in popularity, so there already exist several libraries and frameworks to implement them.
- [single-spa](https://single-spa.js.org/)
- [Frint](https://frint.js.org/)
- [Luigi](https://luigi-project.io/)
**Custom solution** is also a perfectly viable option. It gives you the full flexibility to innovate and evolve your solution.
_The sample application in this repository is implemented without any 3rd party micro frontend libraries._
### Recommended Reading
- https://martinfowler.com/articles/micro-frontends.html
- https://medium.com/@lucamezzalira
- https://medium.com/@lucamezzalira/micro-frontends-resources-53b1ec7d512a
## Application Components
![]()
### Application Shell (`app-shell`)
- Gateway to the application.
- Implements the top menu and client-side routing.
- Loads (lazy), mounts, and unmounts micro frontends based on application state.
- Technologies: [Svelte](https://svelte.dev/), [Universal Router](https://github.com/kriasoft/universal-router), [Ky](https://github.com/sindresorhus/ky), [Bootstrap](https://getbootstrap.com/), [Vite](https://vitejs.dev/)
### Browse Micro Frontend (`mf-browse`)
- Implements browse experience.
- Shows a list of selectable items.
- Technologies: [React](https://reactjs.org/), [Ky](https://github.com/sindresorhus/ky), [Bootstrap](https://getbootstrap.com/), [Vite](https://vitejs.dev/)
### Detail Micro Frontend (`mf-detail`)
- Implements detail experience.
- Shows some details about the selected item.
- Technologies: [Svelte](https://svelte.dev/), [Ky](https://github.com/sindresorhus/ky), [Bootstrap](https://getbootstrap.com/), [Vite](https://vitejs.dev/)
### Backend (`api`)
- Provides JSON data and images for the application.
## Styling Solution
Application shell and the micro frontends use [Bootstrap](https://getbootstrap.com/) for styling.
## Cross-Application Communication
Application shell and the micro frontends can communicate in a loosely coupled way by using the standard [Custom Events API](https://developer.mozilla.org/en-US/docs/Web/Guide/Events/Creating_and_triggering_events).
## Building and Running the App
```bash
docker compose up --build -d
```
```bash
open http://localhost:8000
```