The revalidation backend is used to read the queue and revalidate the routes. It is used for ISR only. For every received message it will trigger a HEAD request with x-prerender-revalidate header to the host.

Special Event and Result types

interface RevalidateEvent {
  type: "revalidate";
  records: {
    host: string;
    url: string;
  }[];
}
 interface RevalidateResult {
  type: "revalidate";
 }