…ntrol extension for stale content such as "stale-while-revalidate" is used (see RFC5861). Notes: The original text seems to conflict with https://tools.ietf.org/html/rfc5861#section-3 3. The stale-while-revalidate Cache-Control Extension When present in an HTTP response, the stal…

…ntrol extension for stale content such as "stale-while-revalidate" is used (see RFC5861). Notes: The original text seems to conflict with https://tools.ietf.org/html/rfc5861#section-3 3. The stale-while-revalidate Cache-Control Extension When present in an HTTP response, the stal…