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Re: DNS Anycast as traffic optimizer?
Paul Vixie wrote:
I'm aware that web clients are not colocated with the client's name server, and that BGP does not attempt to optimise performance.
However, I suspect that in most cases, the client is close enough to the name server, and the BGP best path is close enough to the best path if it were based on latency, that most clients would be happy with the result most of the time. I'm not aiming for 100%, just Good Enough.
I'd be interested in seeing any data refuting either of those points, but it looks like I may have to do it, see what I find, and go write my own research paper. :-)
(I have found data that client's name servers are incorrect indicators of RTT b/w 2 web locations and clients 21 % of the time, but not how incorrect...