Squid will cache HTML even without expires headers if Last-modified is present in the headers, albeit with refresh patterns configured in squid.conf, which really are not well suited to dynamic content. However, it may also be easier to just use (and understand the implications of doing so) refresh patterns in squid.conf for images (instead of worrying about expires headers), and use cache managers (or add expires to the RESPONSE object) for dynamic stuff. The downside to this is that an image that may have changed a long time ago may take a while before doing freshness checks when updated; on a high-traffic site, though, it might just be best to keep your refresh patterns low, since it won't really do too much to your HIT/MISS ratio. Also, if you are using ZEO, consider just running an NTP server on your proxy; this seems like the proper place for it, since it is likely you would have one (or two) of those boxes to many Zope servers that could sync to it. Sean -----Original Message----- From: Andreas Jung [mailto:andreas@andreas-jung.com] Sent: Thursday, May 16, 2002 3:53 AM To: Daniel Meier; zope@zope.org Subject: Re: [Zope] zope + squid - check the access.log of Squid (HITS vs. MISS) - check that your Zope objects set the 'expires' HTTP header and other caching related headers - check that the clocks of your Squid and your Zope machine are synchronized (when running on different machines). -aj ----- Original Message ----- From: "Daniel Meier" <krams@krims.ch> To: <zope@zope.org> Sent: Thursday, May 16, 2002 06:21 Subject: [Zope] zope + squid
hi there
i just installed squid on my zopemachine to use it as a reverse proxy (speed up things ;-). i can access the site through squid, but I think it's not caching. is there something i should put in my zpt and dtml-objetcs and if yes how (I read something about http-header). can somebody explain?
thx
daniel
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