Load balancing question
barmar at genuity.net
Tue Oct 9 21:26:33 UTC 2001
In article <9pvns6$ae1 at pub3.rc.vix.com>,
Andre DeIuri <adeiuri at us.telia.net> wrote:
>I was wondering if bind performs any load balancing. Example: would a
>caching server located in Chicago looking for a record for my domain
>(us.telia.net) be directed to my Chicago auth server, or would be randomly
>sent to any four of my authoritative servers?
It tries servers in the order of their past response times. So if the
network path from the Chicago caching server is shortest to the Chicago
auth server then that server will probably be preferred. This is likely if
they're both on the same ISP network, but not necessarily true if they're
on different ISPs, because the ISPs might not peer in Chicago (e.g. if the
packets have to go to New York to hop over to the other ISP, it would
probably prefer an authoritative server located near New York).
Barry Margolin, barmar at genuity.net
Genuity, Woburn, MA
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