next-best-practices

Async params in Next.js 15+ App Router require awaiting dynamic APIs like params, searchParams, cookies, and headers. You must handle these asynchronous request APIs safely to prevent rendering and hydration bugs.

Correct RSC boundaries in Next.js isolate server-only logic from client interactivity. You must enforce valid React Server Components boundary patterns and wrap CSR bailout hooks in safe Suspense boundaries to prevent hydration errors.

Optimize images and fonts in Next.js by applying performance guardrails for runtime selection, bundling, and script loading. Proper metadata configuration and OG image generation ensure apps remain stable and fast.

Yes, this Next.js guidance includes operational recipes for choosing between route handlers and server actions. It enforces correct file naming, route segment patterns, and middleware proxy conventions so hard navigations don't break.

The best way to structure error handling in Next.js App Router is implementing structured error boundaries. This prevents common App Router mistakes, maintains correct rendering, and keeps applications stable during runtime exceptions.

Next.js metadata causes SEO issues when async request APIs are mishandled or RSC boundaries are invalid. Applying safe patterns for metadata and OG image generation prevents these performance regressions and SEO problems.