Re: Caching

Joel Taqueban wrote:
>
> Just questions on the caching:
>
> As I understand when a client requests web pages via the proxy it caches
> and stores the them on the proxy so that when another client tries to
> access the same page they are actually accessing the proxy's cache
> without the proxy again accessing the pages from the site.
>
> I've got concerns though:
>
> There are some server sites that almost update its pages every hour,
> such as news sites
> like CNN News, BBC News, etc. I just wonder how does Squid handle
> these kind of
> web pages? I mean, how do you define a 'time to live' for these
> kind of pages since
> they change every now and then? For example, at 0700 hrs. a
> certain client checks
> CNN news and such web page is cached on the proxy. At 0900 hrs.
> same client
> checks the same news site but surely that page has already been
> updated. How does
> squid handle this? Does the proxy delete the previous page from
> the cache and
> request a copy of the new one?
>
> thanks,
>
> Joel

This is all fairly well documented, both in the documentation, config
file and FAQ. Your default cache-policy is a percentage of document age,
with two bounding limits.

See also: http://squid.nlanr.net/Squid/FAQ/FAQ-12.html#ss12.20

D
Received on Mon Apr 05 1999 - 19:35:24 MDT