Architecting for Scale: Advanced Module Strategies
Properly structuring your modules is key to a high-performance, maintainable Angular application. As applications grow, dumping everything into the root module becomes unsustainable. Here are three common patterns architects use to keep the "house" clean.
1. Lazy Loading with Feature Modules
By default, Angular loads all modules when the app starts. This is fine for small apps, but for large enterprise systems, it creates a slow initial load. The solution is **Lazy Loading**. You can configure the Angular Router to load a feature module only when the user navigates to its route.
// app-routing.module.ts
const routes: Routes = [
{
path: 'admin',
loadChildren: () => import('./admin/admin.module').then(m => m.AdminModule)
}
];2. The Shared Module Pattern
Do you have UI components like buttons, inputs, or specific pipes that are used everywhere? Instead of importing them individually, create aSharedModule.
This module should declare and exportthese common components. Then, any feature module that needs them simply imports the SharedModule.
3. The Core Module for Services
A CoreModule is a convention for code that should be instantiated only once, such as singleton services (User Auth Service, Logging Service) or app-level components like the Navbar or Footer.
Key Takeaway: Import theCoreModuleONLY in theAppModule. Import theSharedModulein any Feature Module that needs it.
