What to do when the backend sends no caching information?
Hi All, In testing varnish in different situations, I came accross a backend that sends no caching information in its responses, no Expires, cache-control or anything. Ok, I thought, I'll just set the TTL on that object (namely an html page) in VCL. Well, turns out varnish may be setting the ttl all right (I do it in vcl_fetch, but frankly there really is no way to see if it is set correctly or not! or is there?) but the page always gets a PASS, never a HIT. Age: is set to 0 by varnish. Thanks for all the help! Alecs ___ varnish-misc mailing list varnish-misc@projects.linpro.no http://projects.linpro.no/mailman/listinfo/varnish-misc
Re: What to do when the backend sends no caching information?
Hi, Alecs Henry wrote: Well, turns out varnish may be setting the ttl all right (I do it in vcl_fetch, but frankly there really is no way to see if it is set correctly or not! or is there?) but the page always gets a PASS, never a HIT. Age: is set to 0 by varnish. The client probably sends a cookie. When varnish sees a cookie it does a pass. Please see the FAQ on notes on how to deal with this. Per. -- http://linpro.no/ | http://redpill.se/ signature.asc Description: OpenPGP digital signature ___ varnish-misc mailing list varnish-misc@projects.linpro.no http://projects.linpro.no/mailman/listinfo/varnish-misc
Re: What to do when the backend sends no caching information?
Hi Per, I'm actually using the cookies in the cache (using the information provided on the website -- set req.hash += req.http.cookie;) and it works just fine! One thing that the backend does is vary on user-agent, not only content-encoding (I've removed the UA vary on the response, though). So looking into varnishlog I can see the pass, even after the hash is shown correctly. Any pointers? THanks! Alecs On Fri, Dec 12, 2008 at 7:21 PM, Per Buer pe...@linpro.no wrote: Hi, Alecs Henry wrote: Well, turns out varnish may be setting the ttl all right (I do it in vcl_fetch, but frankly there really is no way to see if it is set correctly or not! or is there?) but the page always gets a PASS, never a HIT. Age: is set to 0 by varnish. The client probably sends a cookie. When varnish sees a cookie it does a pass. Please see the FAQ on notes on how to deal with this. Per. -- http://linpro.no/ | http://redpill.se/ ___ varnish-misc mailing list varnish-misc@projects.linpro.no http://projects.linpro.no/mailman/listinfo/varnish-misc
