Re: [squid-users] Caching URLs with a ? in them?

On 02/12/2013 04:51 PM, Amos Jeffries 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.

The URL ONLY changes for logging purposes. The content being served is
static. The serial number is ONLY preset so I can comb the logs and find
who/when picked up a resource.

>> 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.

-- 
Scott Baker - Canby Telcom
System Administrator - RHCE - 503.266.8253