You should check out the documentation on mod_proxy to see what it's
capable of: <http://httpd.apache.org/docs/mod/mod_proxy.html>
You can specify expiration values and be assured that cached files older
than expiry will be deleted.
So, for example, if you know that your content gets updated every 48 hours
you can specify 'CacheMaxExpire 48' and force the proxy server to
retrieve a new copy every 48 hours.
You can also set headers within a dynamic document that specifies an
expiration time. Check out the link in my previous e-mail for more info.
On Fri, 22 Dec 2000, Philip Mak wrote:
> I thought about this... but I'm not sure how I would tell the lightweight
> Apache to refresh its cache when a file gets changed. I suppose I could
> graceful restart it, but the other webmasters of the site do not have root
> access. (Or is there another way? Is it possible to teach Apache or Squid
> that ccs.htm depends on header.asp, footer.asp, series.dat and index.inc?)
>
> Also, does this mess up the REMOTE_HOST variable, or is Apache smart
> enough to replace that with X-Forwarded-For when the forwarded traffic is
> being sent from a local priviledged process?
>
> -Philip Mak ([EMAIL PROTECTED])
>
