Well, you can enable the verbose Via header in the response, that includes (among other things) if it was served out of cache.
You can also write a plugin. -- leif On Jun 3, 2011, at 7:53 AM, "Mav Peri" <mav.p...@optasports.com> wrote: > Thanks for the reply. > > > Is there a way to force ATS to add an additional header indicating if it was > served from cache? > > > > Thanks > > > Mav > > > > From: Leif Hedstrom [mailto:zw...@apache.org] > Sent: 03 June 2011 14:50 > To: users@trafficserver.apache.org > Cc: Mav Peri > Subject: Re: question > > > > On 06/03/2011 04:27 AM, Mav Peri wrote: > > Hi, > > > This is first I am asking a question in this format, so apologies in advance > if this is not the right way to do this! > > > > Is it possible to check the headers returned by ATS to see if an item was > served from cache? > > > Sort of, typically, the Age: header will give that indication (but not > always, if e.g. an upstream intermediary has added it). The "right" way to > check if an object is in cache or not is a request like > > > curl -s -D - -o/dev/null -H "Cache-Control: only-if-cached" > http://www.example.com/foo.png > > > That will give a "200 OK" if it's in cache, and a "504 Not Cached" if not. > > -- leif > > > ______________________________________________________________________ > This email has been scanned by the MessageLabs Email Security System. > For more information please visit http://www.messagelabs.com/email > ______________________________________________________________________
