SSR & Streaming in React

From the React Router v7 cheat sheet · Framework Mode Features · verified Jul 2026

SSR & Streaming

Server-side rendering and HTML streaming in Framework Mode

typescript

// app/root.tsx - Framework Mode root
import {
  Links,
  Meta,
  Outlet,
  Scripts,
  ScrollRestoration,
  useLoaderData
} from "react-router"

export function Layout({ children }) {
  return (
    <html lang="en">
      <head>
        <meta charSet="utf-8" />
        <meta name="viewport" content="width=device-width, initial-scale=1" />
        <Meta />
        <Links />
      </head>
      <body>
        {children}
        <ScrollRestoration />
        <Scripts />
      </body>
    </html>
  )
}

// Server-only loader
export async function loader() {
  // This only runs on the server
  const data = await db.query("SELECT * FROM products")
  return { products: data }
}

export default function App() {
  const { products } = useLoaderData<typeof loader>()
  return <Outlet />
}

💡 Framework Mode enables SSR and streaming out of the box

⚡ Use defer() to stream non-critical data

📌 .server files only run on server, never bundled to client

🟢 Route modules run on server and client; use .server/.client file suffixes to control bundling (RSC + "use client" is a separate experimental feature)

ssrstreamingframeworkserver

Back to the full React Router v7 cheat sheet