On 26 Jun 2008, at 06:13, 黄理灿 wrote:
If queries can not find the right data in the local cache, this draft goes to the servers in the upper layer of tree or the servers having the minimun hop distance with authoritative server, instead of going to the root servers.
You seem to be assuming that whenever the "right data" is missing from the cache, no useful intermediate data is available locally either, so that the resolver will have to re-trace the path from the root, visiting an authoritative server for each zone cut along the way. That's not how a caching resolver works, unless
someone has perversely "prepared" it by flushing the cache.
The suggested advantage of the overlay P2P layer which you propose
seems to be
based on comparison with a highly unrealistic "straw man" model of
your own
invention. This doesn't help your argument.
Best regards,
Niall O'Reilly
University College Dublin IT Services
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