Interview Questions and Answers

Dynamic routes in Next.js are defined using square brackets in the file name, like '[id].js'. You can use the 'getStaticPaths' and 'getStaticProps' functions to fetch data for dynamic routes.

Incremental Static Regeneration is a feature in Next.js that allows you to update static content without rebuilding the entire site. It enables dynamic content updates at runtime.

Authentication in Next.js can be handled using various methods such as third-party providers like Auth0, custom authentication APIs, or middleware like 'next-auth'.

You can configure a custom server in Next.js by creating a 'server.js' file in your project. However, using a custom server is discouraged in most cases, and it may bypass some optimizations.

'getStaticPaths' is used in dynamic routes to specify which paths should be pre-rendered at build time. It returns an array of possible values for the dynamic segments in the route.

API middleware in Next.js allows you to intercept and modify API requests and responses. It can be useful for tasks like authentication checks or request logging.