On 13/02/2013 10:48 a.m., Scott Baker wrote:
I have a bunch of static content with appropriate Expires headers, but the URL contains a "?serial=123456" where the serial number is dynamic. Is squid smart enough to ignore the fact that the URL looks like a dynamic request,
It *is* a dynamic request. Look see ... the URL is constantly changing.
and use the expire headers to see that it's indeed static/cacheable content?
Expires is relative to the URL. So if the URL changed its a *new* object (MISS) with new Expiry details. Get the picture?
see http://wiki.squid-cache.org/ConfigExamples/DynamicContent for teh configuration directives to change for cachign these responses. If you have a new install of Squid-3.1 or later the default settings will cache them.
However, once you have them cached, you will probably still see a lot of MISS happening because the URL are changing. For best cache HIT rate you need to look at why those serial exist at all in the URL. They are breaking the cacheability for you and everyone else on the Internet. Do you have control over the origin server generating those URLs? If you could explain what the serial is for exactly perhapse we could point you in the direction of fixing the object cacheability.
Amos
