On 7 Jul 2008, at 21:36, James Seng wrote:
And all of the questions I asked 10 years ago said that TLDs on
that latter
scale would be problematic to the root.
Was that pre-Anycast or post-Anycast?
There are plenty of examples of people hosting large, infrastructure-
type zones using servers and software that are conventional, commodity
choices. NSD and BIND9 are both quite capable of hosting zones with
single-digit millions of delegations without needing special care and
feeding, for example.
Whether the DNS service for a zone is anycast or not has some, but
really not that much relevance when you're considering the risk of an
engorged root zone. I don't read anything in the layer-9 musings I've
seen so far to suggest that the bar to entry for new TLDs will be so
low that we'll see widespread TLD tasting and churn, for example,
sufficient to make far-flung anycast instances struggle to keep up.
I'm not suggesting that growth should be allowed to happen without
considering the technical consequences. However, I believe in practice
with the headroom in systems and network that root server operators
generally install anyway, there's considerable room for growth and the
general argument that growth in the root zone will undermine stability
sounds more like hysteria than science.
Joe
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