On tis, 2007-08-14 at 18:07 +0100, RW wrote: > Are refresh patterns very relevant to hit-rates? Yes, refresh_pattern tune how long objects is considered fresh, and also the tool to override HTTP freshness when needed.. > 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. the cache acls can only further restrict what is cached, not make uncacheable content cacheable. Regards Henrik
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