On Tue, 14 Aug 2007 08:46:09 +0800
Adrian Chadd <adrian@creative.net.au> wrote:
> Would any other ISPs be willing to share their refresh patterns
> and achieved request/byte hit rates for forward caching proxies?
Are refresh patterns very relevant to hit-rates?
When an object becomes stale, squid will verify it on the next access,
which mostly results in a TCP_REFRESH_HIT, which is still a hit. You
might argue that since it involves a round-trip it's a "second-class"
hit as far as latency is concerned, but I can't see how refresh
patterns have any significant effect on byte hit-rate. Modern browsers
also seem to be much more restrained in how they reload, so I'm also a
bit sceptical about reload-into-ims.
I would have thought that most of the scope for improvement comes from
the cache acls.
Received on Tue Aug 14 2007 - 11:07:54 MDT
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