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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Transparent Caching Solutions - Information Wanted
Bill Unsworth <[email protected]> writes: > Interesting discussion - no many comments from ISPs currently using caching > regarding the effectiveness - cache hit rates or bandwidth "saved". > > Any strategies for populating caches (in addition to user hits)? [...] I'm not sure sure that hit rate should be the primary means of measuring the effectiveness of an HTTP proxy/cache. As was discussed the SF NANOG, the penalty for packet loss on connections with higher RTTs is severe. So even if a proxy server is fetching a miss on a path with a lower RTT than the requesting client there's still a win. Of course, I know of no good way to measure this type of winnage. I guess I could claim squid's ICMP RTT measurement neighbor selection routing thing as another big win, but I'm sure it flies in the face of all that is Decent and True with the Purists out there. -- Matt Ranney - [email protected] Let's not let the students run the High School.
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