How Caches work

Mary Morris (
Wed, 2 Aug 1995 17:52:21 +0800

> Furthermore the cache always sends IMS
> requests for non-image objects without Expires: headers, so you will be
> able to see individual requests. Their proxy does cache without sending
> IMS for all image/* type files for something like 6-12 hours, though I'm
> not sure if that can be defeated by abusing Expires: or Pragma: no-cache.

Can someone tell me which cache we are discussing here?
As far as I know, the Netscape Proxy/Cache server can be
configured to not check the currency of the file.