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What is the difference between getServerSideProps/getStaticProps and App Router data fetching?

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01

Understand the problem

Pages data functions vs async Server Components.

nextjsgetserversidepropsgetstaticpropsdata-fetching
02

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03

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In the Pages Router, getStaticProps (build-time) and getServerSideProps (per-request) fetch data and pass props to a page. The App Router replaces both with async Server Components that fetch directly, using fetch caching/revalidate to choose static vs dynamic per call — more granular and colocated.

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04

Read the code

SSR page, both routers
// Pages Router
export async function getServerSideProps() {
  return { props: { data: await getData() } };
}
export default function Page({ data }) { /* ... */ }

// App Router — inline, dynamic via no-store
export default async function Page() {
  const data = await fetch('https://api/data', { cache: 'no-store' }).then(r => r.json());
  return /* ... */;
}
05

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