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Lazy Loading Revolution: Deferred vs. Dynamic Components in Angular
Manage episode 441006798 series 3602048
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The podcast discusses the evolution from Angular 13 to Angular 17 in handling dynamic component loading, focusing on improvements for developer experience (DX) and performance. In Angular 13, dynamic components required less boilerplate than before but still involved manual steps with ViewContainerRef. Angular 17 introduces Deferred Components with the @defer syntax, which significantly reduces boilerplate. This new feature allows components to be loaded on various triggers like interaction, viewport entry, or user-defined conditions, enhancing lazy loading capabilities.
The @defer block supports multiple triggers for loading and prefetching components, making it versatile for improving initial load performance by deferring heavy components. However, deferred components must be standalone, and the context must import them, unlike dynamic components. The podcast highlights how these advancements make Angular more intuitive for developers, reduce the initial bundle size, and optimize performance by loading components only when necessary. Caveats include limitations in logical combinations of triggers and the need for careful management to avoid layout shifts. Overall, Angular 17's deferred loading is presented as a major step forward in Angular's component management strategy.
- Nx (Monorepo Tools):
- Angular:
- NestJS:
- Node.js:
- Visual Studio Code (for Nx Console Extension):
- Deployment Platforms:
- Render:
- Netlify:
- Vercel (implied for front-end deployment like Next.js but relevant for Angular too):
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