nextjs-expert

Server-side data fetching in the Next.js App Router uses async functions within Server Components to retrieve data directly on the server. This approach simplifies SSR and SSG implementations by eliminating separate API calls for client-side fetching.

SSG pre-renders pages at build time, SSR renders on demand per request, and ISR statically regenerates pages incrementally in the background. Choosing among them balances real-time data needs with server load and performance optimization.

Parallel routes render multiple pages simultaneously within a layout using named slots, while intercepting routes catch specific navigation actions to display content modally. Both features enable complex UI patterns like dynamic modals and dashboards.

Server Actions handle form submissions by defining asynchronous server-side functions directly within Server Components. This mechanism processes mutations securely without creating dedicated API endpoints, streamlining data updates.

Yes, Next.js App Router fully supports TypeScript, allowing developers to strongly type route parameters, server payloads, and component props. This integration ensures type safety throughout server components and data fetching pipelines.

Deployment optimization in Next.js involves utilizing middleware for edge logic, optimizing images and fonts automatically, and structuring server components efficiently. These practices ensure performant, SEO-friendly applications upon deployment.