Re: [squid-users] Problem with Refreh tiles

On 24/06/11 20:19, francescoboccacci_at_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

-- 
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