Round robin on CNAME

Barry Margolin barmar at genuity.net
Mon Apr 1 19:43:08 UTC 2002


In article <a8acu2$bgo at pub3.rc.vix.com>, Nate Campi  <nate at campin.net> wrote:
>
>On Mon, Apr 01, 2002 at 09:59:47AM +0100, Jim Reid wrote:
>> >>>>> "Nate" == Nate Campi <nate at campin.net> writes:
>> 
>>     Nate> It's a small difference, but we're dealing with really busy
>>     Nate> domain names here, and small differences matter. When a
>>     Nate> CNAME is encountered, the query has to be rewritten with the
>>     Nate> new name. This costs in computing resources, adding
>>     Nate> latency. Following NS records without rewriting the query
>>     Nate> would be better.
>> 
>> Frankly, this does not appear to be well thought out. Have you
>> actually done an analysis to support or justify this argument? It
>> would be interesting to see some numbers which compares both
>> approaches. 
>
>There's no measurement needed. If I hand out a name for a nameserver
>inside the lycos.com zone, remote resolvers head right for those IPs.

But since they're actually Akamai's nameservers, how are you planning on
keeping the A records correct as Akamai adds and removes nameservers around
the world?

-- 
Barry Margolin, barmar at genuity.net
Genuity, Woburn, MA
*** DON'T SEND TECHNICAL QUESTIONS DIRECTLY TO ME, post them to newsgroups.
Please DON'T copy followups to me -- I'll assume it wasn't posted to the group.


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