[155613] in North American Network Operators' Group
Re: Return two locations or low TTL [was: DNS caches that support
daemon@ATHENA.MIT.EDU (Tony Finch)
Mon Aug 20 08:26:24 2012
Date: Mon, 20 Aug 2012 13:25:52 +0100
From: Tony Finch <dot@dotat.at>
To: "Patrick W. Gilmore" <patrick@ianai.net>
In-Reply-To: <0953B8D9-ED04-48ED-ACB9-18EA4C9CB9AA@ianai.net>
Cc: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Patrick W. Gilmore <patrick@ianai.net> wrote:
> On Aug 19, 2012, at 17:37 , Mark Andrews <marka@isc.org> wrote:
>
> > Which is why the DNS supports multiple address records. Clients
> > don't have to wait a minutes to fallover to a second address. One
> > doesn't have to point all the addresses returned to the closest
> > data center. One can get sub-second fail over in clients as HE
> > code shows.
>
> I'm afraid I am not familiar with "HE code", so perhaps I am being silly
> here.
Mark is referring to "happy eyeballs":
http://www.isc.org/community/blog/201101/how-to-connect-to-a-multi-homed-server-over-tcp
Tony.
--
f.anthony.n.finch <dot@dotat.at> http://dotat.at/
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