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Return two locations or low TTL [was: DNS caches that support partitioning ?]

Subject: Return two locations or low TTL [was: DNS caches that support partitioning ?]
From: rdobbins at arbor.net (Dobbins, Roland)
Date: Mon, 20 Aug 2012 10:49:44 +0000
In-reply-to: <[email protected]>
References: <[email protected]> <[email protected]> <[email protected]> <[email protected]> <CAAAwwbXv6yMvjnuN=gW_Qq3V+ExF_HW21XrRr4fxNqMBKW4Oig@mail.gmail.com> <[email protected]> <[email protected]> <[email protected]> <[email protected]>

On Aug 20, 2012, at 5:24 PM, Patrick W. Gilmore wrote:

> But I do not think returning multiple A records for multiple datacenters is as useful as lowering the TTL.

Some folks do this via various GSLB mechanisms which selectively respond with different records based on the assumed relative topological distance between the  querying resolver and various server/service instantiations in different locations.

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Roland Dobbins <rdobbins at arbor.net> // <http://www.arbornetworks.com>

	  Luck is the residue of opportunity and design.

		       -- John Milton

Follow-Ups:
- Return two locations or low TTL [was: DNS caches that support partitioning ?]
  - From: patrick at ianai.net (Patrick W. Gilmore)

References:
- DNS caches that support partitioning ?
  - From: johnl at iecc.com (John Levine)
- DNS caches that support partitioning ?
  - From: asullivan at dyn.com (Andrew Sullivan)
- DNS caches that support partitioning ?
  - From: valdis.kletnieks at vt.edu (valdis.kletnieks at vt.edu)
- DNS caches that support partitioning ?
  - From: mike at mtcc.com (Michael Thomas)
- DNS caches that support partitioning ?
  - From: mysidia at gmail.com (Jimmy Hess)
- DNS caches that support partitioning ?
  - From: patrick at ianai.net (Patrick W. Gilmore)
- DNS caches that support partitioning ?
  - From: rekoil at semihuman.com (Chris Woodfield)
- DNS caches that support partitioning ?
  - From: marka at isc.org (Mark Andrews)
- Return two locations or low TTL [was: DNS caches that support partitioning ?]
  - From: patrick at ianai.net (Patrick W. Gilmore)

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