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What are React Server Components and why does Next.js use them?

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01

Understand the problem

Server-only rendering that ships zero JS for that component.

nextjsrscserver-componentsperformance
02

Attempt it yourself

Sketch your approach before reading the solution — that's what interviews test.

Nudge consolestandby

Stuck? Beam a request up — the console returns a conceptual nudge that guides your logic without spoiling the implementation.

03

Study the solution

React Server Components render only on the server, can directly access databases/secrets, and send serialized output (not JS) to the client — reducing bundle size and enabling secure data access. Next.js makes them the default to improve performance and DX.

Solution ready — 2 min read

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04

Read the code

Server Component using server-only code
// app/report/page.tsx — Server Component (default)
import { db } from '@/lib/db';            // ORM never ships to the client
import { marked } from 'marked';          // heavy lib stays server-side

export default async function Report() {
  const row = await db.report.findFirst(); // direct DB access, no API route
  return <div dangerouslySetInnerHTML={{ __html: marked(row.body) }} />;
}
05

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