nextjs-15

Server Actions in Next.js 15 handle form submissions by running asynchronous functions directly on the server. They enable secure data mutations without creating separate API routes, streamlining the process of updating data within your React application.

The Next.js App Router uses file-based conventions to structure layouts and pages. Defining specific files for layouts and pages automatically wraps your content in shared UI, creating a predictable folder structure for your React application.

Data fetching in Next.js Server Components runs exclusively on the server by default. This approach allows you to fetch data directly within the component using parallel fetching and streaming with Suspense for a highly responsive user experience.

Yes, Next.js 15 supports dynamic metadata generation. You can export a generateMetadata function from your route files to dynamically create SEO metadata based on the current route parameters or fetched data.

Use streaming with Suspense in the Next.js App Router to progressively render UI components. This pattern improves perceived performance by immediately displaying fallback content while waiting for slow asynchronous data fetching operations to complete.

Yes, the Next.js App Router supports middleware to intercept requests. Middleware runs before a request completes, allowing you to rewrite, redirect, or modify incoming requests and add authentication checks to your routes.