What is Next.js?

Next.js is a React framework that enables features like static site generation (SSG), server-side rendering (SSR), and API routes, making it ideal for production-grade applications.

Key Features of Next.js

• Static Site Generation (SSG): Pre-render pages at build time.
• Server-Side Rendering (SSR): Render pages on the server per request.
• API Routes: Handle backend logic within Next.js applications.
• File System Routing: Based on the structure of the /pages directory.

Example of SSR and SSG in Next.js

// SSR Example
export async function getServerSideProps() {
  const data = await fetch('https://api.example.com/data');
  return { props: { data } };
}

// SSG Example
export async function getStaticProps() {
  const data = await fetch('https://api.example.com/data');
  return { props: { data } };
}

In Next.js, you can choose between SSR and SSG to optimize performance. getServerSideProps fetches data on each request for SSR, while getStaticProps fetches data at build time for SSG.