nextjs

To migrate to Next.js 16, upgrade dependencies, run the codemod upgrade, rename middleware.ts to proxy.ts, add default.tsx for parallel routes, and adopt new caching APIs like revalidateTag and updateTag.

Next.js 16 enforces support for async params, requiring you to await them in Server Components and route handlers before accessing their values to ensure proper data fetching.

A default.tsx file is required for parallel routes in Next.js 16 to explicitly define the fallback UI that renders when the route is not matched or during navigation.

The best way to handle explicit caching in Next.js 16 is using the "use cache" directive alongside updated APIs like revalidateTag, updateTag, and refresh for granular control.

Yes, Next.js 16 supports Turbopack stability and React 19.2 integration, providing modern web app patterns and optimized build performance for App Router applications.

To rename middleware to proxy.ts in Next.js 16, simply change the filename from middleware.ts to proxy.ts and update your route interception logic to follow the new proxy migration guidance.