[bind10-dev] resolver performance research, take 2

[JINMEI Tatuya / 神明達哉]

At Tue, 17 Jul 2012 09:09:51 -0700,
Jerry Scharf <scharf at isc.org> wrote:
> 
> My guess is that the vast majority of these are queries with predictable 
> structure for things where the error is returned by a registry 
> controlled authoritative server. Would it make sense to allow the user 
> to configure a longer cache time for this case to reduce the upstream 
> queries? Would a 12 hour cache on these make a significant difference in 
> upstream queries? I bet just doing this for the root, where the real 
> world update rate is measured in months/years between additions of new 
> TLDs, would help quite a bit.

Its real effectiveness aside, one possible way for the root zone would
be to act as an unofficial secondary of root.  At least the F root
server allows zone transfer, so anyone can be a secondary without
breaking the integrity of the name space.  (How to integrate it in the
resolver is a question, but here I'm just talking about possibilities
feature-wise).

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JINMEI, Tatuya