Re: [squid-users] web accelerator & caching issues

        Hiyas,

        First of all, sorry for the late answer. :)

Henrik Nordstrom wrote:
> tor 2006-04-20 klockan 15:51 -0700 skrev Mike Leong:
>
>>> I would like to know if it is possible to configure squid to
>>> "ignore" the cacheability of any page, and simply force squid to cache
>>> all the content requested on the backend servers.
>> yes, override the page cache directive via the refresh_pattern directive.

        It seems that "refresh_pattern" does not enforce the rules on all
objects, applying the policies only to "cacheable" ones.

>>> Also, I would like to ignore any info regarding the expire of the
>>> object(for example forcing the object to be valid for a month or so), or
>>> any request to "refresh" an object from the cache, unless this request
>>> came in the form of a "PURGE".
>>
>> Use the refresh_pattern directive for this as well.

        Again, as long as the object is cacheable, this directive seems to work
as expected.

> But if you can you should work with the web server to have it announce
> proper cacheability status.
>
> Some ammo for the purpose:
> Caching Tutorial for Web Authors and Webmasters
> <url:http://www.mnot.net/cache_docs/>
>
> Cacheability Engine
> <url:http://www.mnot.net/cacheability/>

        Heh, those URLs solved my problem. Discovered that my vignette engine
was not sending any "Expires" or "Cache-Control" headers, and had SSI
enabled globally on my Apache server (which in turn disabled the
"Last-Modified", "ETag" and "Content-Length" headers).

        Simply using the mod_expires module on my Apache+vignette backend
solved the issue. Also, I'm trying to disable SSI on all virtualdomains
with "static" pages (pages without any "include" section).

        Anyway, thanks for your help (Henrik/Mike).

> Regards
> Henrik

Regards,

Domingos.

-- 
Domingos Parra Novo
Coordenador de Projetos
Terra Networks Brasil S/A
Tel: +55(51)3284-4275