On Feb 25, 2014, at 2:04 PM, Brendan Webb <[email protected]> wrote: > I've recently started to notice that some requests made by ATS to my origin > servers are completely missing the Cache-Control header in the response. > Functionality seems unaffected, but the missing header is somewhat > concerning. Wondering if others have seen this behavior too as I'm having a > heck of a time tracking down the cause. > > Things I've done recently which may have caused this: > upgraded ATS from 3.0.4 to 4.1.2 > switched remap.config from using map/reverse_map combos to one way map + > pristine host headers > using rfc5861 plugin for stale-while-revalidate and stale-if-error > functionality
Hmmm, not sure what ATS possibly could do to prevent the origin from sending the Cache-Control: header. Are you sure it’s not something on the origin side that’s trying to detect the UA (maybe using the Via: header?) and responds without the CC: ? — Leif
