Twitter Direct Message Caching and Firefox
So basically Twitter wasn't setting its Cache-Control directive correctly? Why is this behavior different from Safari and Chrome?<p>It looks like "no-store" is in this IETF RFC: <a href="https://tools.ietf.org/html/rfc7234#section-5.2.2" rel="nofollow">https://tools.ietf.org/html/rfc7234#section-5.2.2</a><p>EDIT - Ah, I see, it's in the original post:<p>> Testing from Twitter showed that the request was not being cached in other browsers. This is because some other browsers disable heuristic caching if an unrelated HTTP header, Content-Disposition, is present. Content-Disposition is a feature that allows sites to identify content for download and to suggest a name for the file to save that content to.<p>> In comparison, Firefox legitimately treats Content-Disposition as unrelated and so does not disable heuristic caching when it is present.<p>It looks like Twitter only tested this in Safari and Chrome and called it a day. Their wording implies that it's Firefox's fault, which is misleading.