Cached React Server Components

async function ProductList() {
  // !mark
  'use cache';
  // ...
}

export default async function Page() {
  return <ProductList />;
}

Demo

• A product list component is annotated with use cache.
• An artificial one second delay is added to make the difference more noticeable.
• Since the component is cacheable, the delay only happens the first time the component is rendered.
• layout.tsx and page.tsx aren't explicitly annotated with use cache, but Next.js infers they're static because they do not use any Dynamic APIs. If they started to, Next.js will guide the developer to either add use cache or a <Suspense> boundary.

Notes

• This demo uses the experimental use cache directive and describes caching behavior once stable.