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DNS caches that support partitioning ?

Subject: DNS caches that support partitioning ?
From: lists at die.net (Aaron Hopkins)
Date: Mon, 20 Aug 2012 08:00:00 -0700 (PDT)
In-reply-to: <[email protected]>
References: <[email protected]> <[email protected]> <[email protected]> <[email protected]> <CAAAwwbXv6yMvjnuN=gW_Qq3V+ExF_HW21XrRr4fxNqMBKW4Oig@mail.gmail.com> <[email protected]>

On Sat, 18 Aug 2012, Patrick W. Gilmore wrote:

> IMHO, if Google losses a datacenter and all users are stuck waiting for a
> long TTL to run out, that is Very Bad.  In fact, I would call even 2.5
> minutes (average of 5 min TTL) Very Bad.  I'm impressed they are
> comfortable with a 300 second TTL.

Google is very aggressive about reducing user-visible latency, of which they
cite DNS as a significant contributing factor.  They may be choosing to
strike a different balance of faster when everything is working correctly vs
faster to recover when something breaks.

                                     -- Aaron

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)

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