Explain Lazy Loading in Angular?

Lazy loading in Angular is a design pattern used to defer the loading of certain parts of an application until they are actually needed. This technique is particularly useful in improving the performance of Angular applications, especially those with large amounts of code and numerous features.

How Lazy Loading Works

In Angular, applications are typically structured into modules, which are collections of related components, services, directives, and pipes. By default, Angular loads all modules when the application starts, which can lead to increased load times and reduced performance, particularly in large applications.

Lazy loading changes this behavior by splitting the application into multiple bundles and loading them on demand. Instead of loading all modules at startup, Angular only loads the modules necessary for the initial view, and other modules are loaded as needed based on user interactions or route changes.

Implementation of Lazy Loading

To implement lazy loading in Angular, you follow these steps:

1. Create Feature Modules: Divide your application into feature modules, each encapsulating specific functionality or features of the application.

2. Configure Routes: Use the Angular Router to define routes and specify which modules should be loaded lazily. This is done using the loadChildren property in the route configuration, where you provide a path to the module and its associated routing module.

   typescript Copy

   const routes: Routes = [
     {
       path: 'example',
       loadChildren: () => import('./example/example.module').then(m => m.ExampleModule)
     }
   ];

3. Optimize Performance: By loading modules only when they are needed, lazy loading reduces the initial load time, decreases the application's size on the initial load, and conservatively uses bandwidth and system resources.

Benefits of Lazy Loading

• Improved Initial Load Time: Reduces the size of the initial application bundle loaded when the user first visits the application.
• Efficient Resource Utilization: Resources are used more efficiently as only the required parts of the application are load...