[155603] in North American Network Operators' Group
Re: DNS caches that support partitioning ?
daemon@ATHENA.MIT.EDU (Patrick W. Gilmore)
Sat Aug 18 18:43:55 2012
From: "Patrick W. Gilmore" <patrick@ianai.net>
In-Reply-To: <CAAAwwbXv6yMvjnuN=gW_Qq3V+ExF_HW21XrRr4fxNqMBKW4Oig@mail.gmail.com>
Date: Sat, 18 Aug 2012 18:43:24 -0400
To: North American Operators' Group <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Aug 18, 2012, at 8:44, Jimmy Hess <mysidia@gmail.com> wrote:
> And I say that, because some very popular RRs have insanely low TTLs.
>=20
> Case in point:
> www.l.google.com. 300 IN A 74.125.227.148
> www.l.google.com. 300 IN A 74.125.227.144
> www.l.google.com. 300 IN A 74.125.227.146
> www.l.google.com. 300 IN A 74.125.227.145
> www.l.google.com. 300 IN A 74.125.227.147
> www.l.google.com. 300 IN A 74.125.227.148
Different people have different points of view.
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.
You obviously feel differently. Feel free to set your TTL higher.
--=20
TTFN,
patrick
