What DNS Is Not

Dave Temkin davet1 at gmail.com
Mon Nov 9 00:06:51 UTC 2009

Alex Balashov wrote:
> For example, perhaps in the case of CDNs geographic optimisation 
> should be in the province of routing (e.g. anycast) and not DNS?
> -- Alex
In most cases it already is.  He completely fails to address the concept 
of Anycast DNS and assumes people are using statically mapped resolvers.

He also assumes that DNS is some great expense and that by not allowing 
tons of caching we're taking money out of peoples' wallets.  This is 
just not true with the exception of very few companies whose job it is 
to answer DNS requests.


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