nextjs-best-practices

Use 'use client' in Next.js App Router only when a component requires interactivity, state, or browser APIs. Apply this boundary to optimize rendering and keep server components as the default for predictable performance.

Choose Next.js data fetching strategies based on load requirements: static for build-time data, ISR for periodic revalidation, and no-store for real-time dynamic content. Adopting the appropriate pattern ensures optimal performance across different rendering scenarios.

Next.js App Router uses route file conventions like page.tsx, layout.tsx, loading.tsx, error.tsx, and not-found.tsx to structure routes. Organizing routes with these files improves user experience and application resilience during loading or failure states.

Organize Next.js routing patterns by applying route file conventions across layouts and pages. Structure your project using layout.tsx for shared UI and page.tsx for route-specific content to ensure maintainability and consistent rendering boundaries.

This guide specifically targets Next.js projects using the App Router. It clarifies architecture decisions for server components, data fetching, and routing conventions unique to the App Router paradigm, rather than the older Pages Router.