Introducing Smart Edge Revalidation

5 · Cloudflare · July 28, 2021, 1:09 p.m.
When both Last-Modified and Etag headers are absent from the origin response, Smart Edge Revalidation will use the time the object was cached on Cloudflare as the Last-Modified header value. When Cloudflare receives a revalidation request, our edge can respond using the generated header....