Re: [squid-users] Re: finding the reason why an object is cached or not...

Anton Melser wrote:
> On 17/05/07, Anton Melser <melser.anton@gmail.com> wrote:
>> Hi,
>> I am trying to understand why certain objects are cached and others
>> not (in a web accelerator setup). For example, squid is caching
>> http://my.site.org/images/hello.gif
>> but not
>> http://my.site.org/js/hello.js
>> Both files are well under any limits (< 2KB)
>> But for another site, pretty much everything is getting cached, i.e.,
>> http://my.othersite.org/images/hello.gif
>> and
>> http://my.othersite.org/js/hello.js
>> are giving hits.
>> The only difference I could see in the headers (as reported via the
>> firefox plugin httpheaders) is that the first js is gzipped. Could
>> that be it? I tried disabling the apache gzip exclusion thingie
>> #acl apache rep_header Server ^Apache
>> #broken_vary_encoding allow apache
>> But that didn't seem to change anything. Does anyone have any pointers?
>> Cheers
>> Anton
>
> Here is what httpheaders gives
>
> http://www.my.domain.name/js/general.js
>
> GET /js/general.js HTTP/1.1
> Host: www.my.domain.name

<snip other headers>

>
> HTTP/1.x 200 OK
> Date: Thu, 17 May 2007 15:31:02 GMT
> Server: Apache/2.0.54 (Debian GNU/Linux) mod_python/3.1.3 Python/2.3.5
> PHP/5.0.5-1 mod_perl/1.999.21 Perl/v5.8.7
> X-Powered-By: PHP/5.0.5-1
> Set-Cookie: PHPSESSID=27ed1a75d667f05cc961ff76df8bee61; path=/

These would be the problem:

> Expires: Sat, 19 May 2007 17:31:02 GMT
> Cache-Control: private
> Pragma: cache
<snip other headers>

Apparently the "private" is a show-stopper cache control action,
preventing secure data from being stored.

Amos
Received on Thu May 17 2007 - 20:47:16 MDT