Responses include a header called
X-Vercel-Cache that contain details about the state of the cache for the resource. The possible values are shown in the diagrams below.
A background request to the origin was made to get a fresh version. (see Stale-While-Revalidate for more info)
- Case 1: Include an
Authorizationheader with a secret
- Case 2: Include a
_vercel_no_cachecookie header or query param
An example of prerender is in
Next.js, when setting
fallback:blocking will not return prerender.