[squid-users] Reg - Squid can cache the chrome OS updates.

[ViSolve Squid]

Thanks for your valuable information Amos.

Regards,
Nithi

On Friday 26 June 2015 10:48 AM, Amos Jeffries wrote:
> On 26/06/2015 4:36 p.m., Squid List wrote:
>> Hi,
>>
>> Is the Squid can cache Microsoft Updates and IOS Updates?
>>
>> If its cache means, please help me out for cache Chrome OS updates in
>> latest squid version that is installed in CentOS 6.6.
> The short answer (FWIW):
>
> Squid can (and does) cache any HTTP content which is cacheable. With the
> exception of 206 responses and PUT request payloads.
>
>
> The long answer:
>
> Whether the cached content is used depends entirely on what the client
> requests. It has the power to request that cached content be ignored.
>
> Whether content is cacheable depends entirely on what the server
> delivers. It has the power to place limits on cache times up to and
> including stating an object is already stale (ie not usefully cached).
>
> There are also some mechanisms which when used MAY make content
> completely untrustworthy or and uncacheable:
> * connection based authentication (NTLM, Negotiate)
> * traffic interception (NAT, TPROXY, SSL-Bump)
> * broken Vary headers (though this causes caching when it shouldn't)
> *
>
>
> I hope that explains why you wont get a clear simple answer to your
> question.
>
> To help any further we will need information about;
> - what Squid version you are using (if its not the latest 3.5 please try
> an upgrade),
> - how its configured (squid.conf without the comment lines please),
> - how its being used (explicit forward-, reverse-, or interception proxy)
> - what exactly the request messages you are trying to make into HITs are
> ("debug_options 11,2" produces a traces of those),
> - what response messages the server is delivering on the MISS (the same
> 11,2 trace)
> - what Squid is logging for them (access.log entries)
>
> Amos
>
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