1. Architectural Overview of Micro-Frontends
As enterprise web applications scale to hundreds of engineers, single monolithic frontend repositories often suffer from build bottlenecking, complex git merge conflicts, and delayed release cycles. Micro-frontends decompose large user interfaces into independent, autonomous sub-applications developed and deployed by cross-functional teams.
2. Module Federation with Webpack and Vite
Module Federation enables a host application to dynamically import remote JavaScript bundles at runtime over HTTP without bundling them at compile time. This allows different sub-teams to deploy bug fixes or new features without triggering a full host deployment.
// host/webpack.config.js
const { ModuleFederationPlugin } = require('webpack').container;
module.exports = {
plugins: [
new ModuleFederationPlugin({
name: 'host_app',
remotes: {
checkout: 'checkout@https://cdn.bytenora.online/checkout/remoteEntry.js',
catalog: 'catalog@https://cdn.bytenora.online/catalog/remoteEntry.js',
},
shared: {
react: { singleton: true, requiredVersion: '^19.0.0' },
'react-dom': { singleton: true, requiredVersion: '^19.0.0' },
},
}),
],
};3. Shared Dependency Management
To avoid downloading duplicate copies of core libraries like React, Tailwind, or date formatting utilities, Module Federation coordinates singletons across remote applications, ensuring high page speed performance and lower memory usage.
4. Resilient Fallbacks & Independent Deployment
A critical architectural pattern in micro-frontends is fault tolerance. If a remote module CDN encounters temporary network degradation, the host container should render a graceful fallback component rather than crashing the entire user session.
