This example uses stale-while-revalidate cache-control headers in combination with getServerSideProps for server-rendering.
pages/index.js uses getServerSideProps to forward the request header to the React component, as well as setting a response header. This cache-control header uses stale-while-revalidate to cache the server response.
pages/index.js is considered fresh for ten seconds (s-maxage=10). If a request is repeated within the next 10 seconds, the previously cached value will still be fresh. If the request is repeated before 59 seconds, the cached value will be stale but still render (stale-while-revalidate=59).
In the background, a revalidation request will be made to populate the cache with a fresh value. If you refresh the page, you will see the new value shown.
Preview the example live on StackBlitz:
Deploy the example using Vercel:
Execute create-next-app with npm or Yarn to bootstrap the example:
npx create-next-app --example ssr-caching ssr-caching-app
# or
yarn create next-app --example ssr-caching ssr-caching-appDeploy it to the cloud with Vercel (Documentation).