Next.js Questions

Use virtualization, pagination, memoization, stable keys, avoid expensive render logic, and move state close to where it is needed.

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Next.js is a React framework for routing, SSR, SSG, API routes, image optimization, and production-ready web apps.

Pages router uses pages directory and file-based routes. App router uses app directory, layouts, server components, and nested

routing.

Dynamic routing creates pages like /blog/[slug] where slug value comes from URL.

SSR renders on each request. SSG renders at build time. ISR updates static pages after a revalidation time.

Server components render on server, reduce client JS, can access backend resources, but cannot use browser-only hooks like

useState.