nextjs-app-router-expert

Fix Next.js App Router hydration errors and routing mistakes by auditing route segment layouts and React Server Component boundaries. This Skill diagnoses data fetching strategies and caching policies to resolve stale caches and inefficient server/client boundaries.

Implement Next.js Server Actions for form mutations by applying progressive enhancement, optimistic updates, and validation patterns. This Skill provides configuration steps for Server Action mutation patterns within RSC architectures.

The best way to configure React Server Components caching and revalidation is applying ISR, no-store, and on-demand revalidation policies. This Skill optimizes data fetching strategies to prevent stale caches in Next.js App Router.

Yes, this Next.js App Router guidance supports edge runtime and Vercel deployments. It covers middleware matchers, geolocation, A/B testing, and streaming with Suspense for Cloudflare and self-hosted environments.

You need Next.js App Router parallel and intercepting routes when designing complex UIs like modals or dynamic feeds. This Skill provides expert guidance on file-based routing patterns, route groups, and dynamic routes.