next-best-practices

Fetching data directly in Next.js Server Components is the default approach, but you can also use Server Actions or Route Handlers depending on whether you need to mutate data or expose API endpoints. This pattern improves performance by moving logic to the server.

Error handling in Next.js involves using error.tsx for route-level errors and global-error.tsx for root layout errors. These special files catch unexpected runtime errors and let you display fallback UI to recover the application gracefully.

React Server Component boundaries dictate where your code executes and what can be imported. You must detect and prevent invalid patterns by keeping server-only logic out of client components to maintain strict boundaries.

Optimizing images and fonts in Next.js involves using built-in optimization techniques for faster load times. You should implement bundling strategies and leverage Next.js features to automatically serve appropriately sized assets.

Use Route Handlers in Next.js when you need to expose a specific API endpoint, and use Server Actions for direct data mutations triggered by client interactions. Choosing correctly ensures robust application development.