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Re: Return two locations or low TTL [was: DNS caches that support partitioning ?]
From: "Dobbins, Roland" <rdobbins () arbor net>
Date: Mon, 20 Aug 2012 14:07:34 +0000


On Aug 20, 2012, at 5:56 PM, Patrick W. Gilmore wrote:

My question above is asking Mark how you guarantee the user/application selects the A record closest to them and only 
use the other A record when the closer one is unavailable.

I understand - my point was that folks using a GSLB-type solution would generally include availability probing in the 
GSLB stack, so that a given instance won't be included in answers if it's locally unavailable (obviously, the GSLB 
can't know about all path elements between the querying resolver and the desired server/service).

-----------------------------------------------------------------------
Roland Dobbins <rdobbins () arbor net> // <http://www.arbornetworks.com>

          Luck is the residue of opportunity and design.

                       -- John Milton



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