Best Practices for Angular Performance

Performance is crucial for modern web applications. In this post, we’ll explore best practices for optimizing Angular applications.

OnPush Change Detection

Use OnPush change detection strategy to reduce unnecessary change detection cycles:

@Component({
  changeDetection: ChangeDetectionStrategy.OnPush
})

Lazy Loading

Implement lazy loading for feature modules to reduce initial bundle size:

{
  path: 'feature',
  loadChildren: () => import('./feature/feature.module').then(m => m.FeatureModule)
}

TrackBy Functions

Always use trackBy functions in *ngFor to improve rendering performance:

trackByFn(index: number, item: Item): number {
  return item.id;
}

Conclusion

By following these best practices, you can significantly improve your Angular application’s performance and user experience.