Next.js: The Ultimate Guide to Server-Side Rendering

Wed, 20 Jan 2021 00:00:00 +0000

Next.js extends React with file-based routing, SSR, SSG, and API routes. Understanding when each rendering mode applies is essential for performance and SEO.

Rendering Modes

Static Generation (SSG) pre-renders at build time-ideal for marketing pages and blogs. Server-Side Rendering (SSR) renders on each request-best for personalized or frequently changing data. Client-Side Rendering (CSR) hydrates in the browser for highly interactive dashboards.

getServerSideProps Example

export async function getServerSideProps({ params }) {
  const res = await fetch(`https://api.example.com/posts/${params.id}`);
  const post = await res.json();
  return { props: { post } };
}

App Router (Preview)

Next.js 13+ introduces the App Router with React Server Components. Pages Router patterns remain widely used-know both as you maintain legacy and greenfield apps.

Ssr on David Lang

Next.js: The Ultimate Guide to Server-Side Rendering

Rendering Modes

getServerSideProps Example

App Router (Preview)