Internet Engineering Task Force (IETF)M. Nottingham
Request for Comments: 9211Fastly
Category: Standards TrackJune 2022
ISSN: 2070-1721

The Cache-Status HTTP Response Header Field


To aid debugging, HTTP caches often append header fields to a response, explaining how they handled the request in an ad hoc manner. This specification defines a standard mechanism to do so that is aligned with HTTP's caching model.