> You have not yet answered the question of: > WHY are you even thinking this ?? Because one of my backend is Amazon S3 and I can't set up Cache-Control on it. So I looking for different solution how to change this header field (squid). I want the objects to be cache as long as possible on the clients web-browser side (1 year). On Wed, Oct 21, 2009 at 1:52 PM, Amos Jeffries <squid3@xxxxxxxxxxxxx> wrote: > Struzik Wojciech wrote: >> >> Actually I'm using varnish but varnish is unstable (slowdowns, >> coredumps). Varnish supports Cache-Control, so I can set up this on >> it. >> Here is a part of network my topology >> >> nginx (consistent hash) -> varnish >> ---> 1st backend >> | >> | >> | >> ---> 2nd backend >> | >> | >> -> varnish ---> 1st backend >> | >> >> ---> 2nd backend >> >> >> I want replace varnish into squid (better stability/performance when >> one of backends is down), so I wonder where is better to add >> Cache-Control: max-age header, on nginx or squid. Is it possible to >> set up custom Cache-Control (max-age) on squid ??? > > You have not yet answered the question of: > WHY are you even thinking this ?? > > It's only possible to do it reliably and securely on the originating web > server. Squid does not make it easy to grossly violate the HTTP protocol. > > There are three levels of Cache-Control values: > s-max-age applying to middleware proxies > max-age applying to web browsers (and middleware only if there is no > s-max-age present) > > The Surrogate-Control header is also available on latest 3.1 via ESI to > control middleware in the delegated reverse-proxy chain separate to the > s-max-age values for external middleware. > It should not be to hard to make it work for HTTP reverse-proxy situations. > > Amos > >> >> On Wed, Oct 21, 2009 at 11:40 AM, Matus UHLAR - fantomas >> <uhlar@xxxxxxxxxxx> wrote: >>> >>> On 21.10.09 10:48, Struzik Wojciech wrote: >>>> >>>> I using Squid 2.7. How can i add custom field max-age to Cache-Control >>>> response header ??? >>> >>> why would you want to do that on squid? >>> -- >>> Matus UHLAR - fantomas, uhlar@xxxxxxxxxxx ; http://www.fantomas.sk/ >>> Warning: I wish NOT to receive e-mail advertising to this address. >>> Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu. >>> BSE = Mad Cow Desease ... BSA = Mad Software Producents Desease > > > -- > Please be using > Current Stable Squid 2.7.STABLE7 or 3.0.STABLE19 > Current Beta Squid 3.1.0.14 > -- Regards Struzik Wojciech mobile: +48504678810 xmpp: nob@xxxxxx
