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List:       squid-users
Subject:    Re: [squid-users] Problem with Refreh tiles
From:       Amos Jeffries <squid3 () treenet ! co ! nz>
Date:       2011-06-25 13:37:54
Message-ID: 4E05E4B2.5030201 () treenet ! co ! nz
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On 24/06/11 20:19, francescoboccacci@libero.it wrote:
> Hi to all,
> i have a question for you. I use a squid to server tiles in fast way. I
> explain to you how i configure my system:
> I have a tile server that create a OSM tiles in real time and another server
> where i installed squid.
> When i ask a tiles, the request pass throw squid that ask a tile if it aren't
> cached. Sometimes it happend that some tiles aren't serverd or it are old.
> So my question is:
> How configure squid to be "aligned" to main tile server?

The tile server needs to add Cache-Control: header parameters.

This is a great tutorial that explains the most important ones and how 
they work:
  http://www.mnot.net/cache_docs/


> What is the parameter that can be setted?
>

As indicated above, the server controls cacheability. Squid will only 
send stale content if it is allowed to.

Some Squid versions contain directive "max_stale" to limit how long a 
stale object can be sent before the client sees an error page instead.

The "refresh_pattern" directive can do some complex calculations on 
object age and staleness. But this is not aligned with the server.

Amos
-- 
Please be using
   Current Stable Squid 2.7.STABLE9 or 3.1.12
   Beta testers wanted for 3.2.0.9 and 3.1.12.3
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