[119156] in North American Network Operators' Group
Re: What DNS Is Not
daemon@ATHENA.MIT.EDU (Dave Temkin)
Sun Nov 8 19:07:33 2009
Date: Sun, 08 Nov 2009 16:06:51 -0800
From: Dave Temkin <davet1@gmail.com>
To: Alex Balashov <abalashov@evaristesys.com>
In-Reply-To: <4AF75BE2.80002@evaristesys.com>
Cc: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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.
-Dave
