On 10/20/14 2:03 PM, Bob Harold wrote:
I support the idea of qname minimization, but I think there is a common
case where it will cause additional DNS round trips, slowing the
response and increasing the number of packets and queries the servers
must handle.
Consider “www.host.group.department.example.com
Your analysis is correct, but only for a cold cache. Once the resolver
has cached the NS records for group.department.example.com the penalty
no longer applies.
One thing that may be a worthwhile consideration though is a way to
cache that host.group.... is not a zone cut. That would further reduce
the penalty.
FWIW, I also have some concerns about empty non-terminals, but none of
that slows me down in terms of supporting WG adoption. I think it's a
worthy idea, and I'll do what I can to help.
Doug
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