[155615] in North American Network Operators' Group
Re: DNS caches that support partitioning ?
daemon@ATHENA.MIT.EDU (Tony Finch)
Mon Aug 20 08:44:03 2012
Date: Mon, 20 Aug 2012 13:43:10 +0100
From: Tony Finch <dot@dotat.at>
To: Raymond Dijkxhoorn <raymond@prolocation.net>
In-Reply-To: <alpine.LFD.2.00.1208181126260.25687@noc.prolocation.net>
Cc: John Levine <johnl@iecc.com>, nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Raymond Dijkxhoorn <raymond@prolocation.net> wrote:
>
> When you use forwarding it doesnt cache the entry. ('forward only'
> option in bind for example).
That's incorrect. Try configuring a forwarded zone and observe the TTLs
you get in responses. The "forward only" option disables recursion but
not cacheing.
> I talked with Paul Vixie about doing this internal inside bind but that was
> not something they would be delighted to do (at least not now). If you could
> define how large your cache pool was for certain objects that would fix it
> also.
You might be able to hack it using a combination of forwarding zones,
views, max-cache-ttl, and attach-cache.
Tony.
--
f.anthony.n.finch <dot@dotat.at> http://dotat.at/
Forties, Cromarty: East, veering southeast, 4 or 5, occasionally 6 at first.
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