nextjs-advanced-routing

Use Next.js Server Actions to handle form mutations directly on the server. You can manage client-to-server state using the `useActionState` hook, ensuring secure data updates without writing separate API endpoints.

Parallel and intercepting routes are Next.js App Router patterns for rendering multiple pages simultaneously and intercepting navigation. They enable advanced UI layouts like modals and drawers, allowing profile editing without a full page reload.

Create API endpoints in the Next.js App Router by defining a `route.ts` file. These Route Handlers allow you to process requests and manage cookies directly on the server, replacing the older Pages API directory.

Yes, you can stream dynamic content loading using React Suspense and build robust applications with error boundaries. This approach ensures partial page rendering while gracefully catching and isolating runtime errors.

Yes, the guidance addresses TypeScript best practices for Next.js App Router. It covers type-safe implementations for critical server actions, Route Handlers, and form handling using `useActionState`.

Use Server Actions for direct form mutations and client-to-server data updates, utilizing `useActionState` for state management. Use Route Handlers when you need to expose dynamic API endpoints for external or programmatic access.