Max-age=0 means that the response is instantly stale, and ought to-revalidate means that it will have to not be reused without having revalidation as soon as it is actually stale — so, in combination, the semantics seem to be the same as no-cache. That's some thing I've in no way https://marcocebxo.shoutmyblog.com/35466820/the-smart-trick-of-coldfire-thc-that-no-one-is-discussing