Q181. How to keep Next.js API routes modular and organized?
To keep Next.js API routes modular and organized, you can structure your API routes in a way that groups related functionality together. Here are some best practices: - *...
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Q182. RTK Query with Next.js App Router?
RTK Query is a powerful data fetching and caching tool built on top of Redux Toolkit. You can use RTK Query in a Next.js App Router application to manage server state and...
Q183. Redux Toolkit with Next.js App Router?
Redux Toolkit (RTK) can be seamlessly integrated with Next.js App Router to manage global state in your application. Here's how to set up Redux Toolkit in a Next.js App R...
Q184. How do you read and set cookies in the App Router?
On the server (server components or route handlers) use `cookies()` from `next/headers` to read cookies. To set cookies from a route handler, return a `Response` with a `...
Q185. How can you stream responses from a route handler?
Use the Web Streams API (ReadableStream) in a route handler to stream data progressively to the client. This is useful for large payloads or server-sent updates. ```js ex...
Q186. How do you test App Router components and pages?
Use React Testing Library for components and Jest for unit tests. For full page integration you can use `next-router-mock` or render server components with `@testing-libr...
Q187. How to implement optimistic UI with the App Router?
Use client components for local state and immediately update UI optimistically, then call a server action or route handler to persist. On success, revalidate server data;...
Q188. How do you choose between Edge and Node runtimes for route handlers?
Use the Edge runtime for low-latency global responses and where Node APIs are not needed. Choose Node (default) when you require native Node modules, filesystem access, o...