[dns-operations] dns-operations at lists.dns-oarc.net
bert.hubert at netherlabs.nl
Mon May 7 19:45:25 UTC 2012
On Mon, May 07, 2012 at 07:27:49PM +0100, Steven Carr wrote:
> I think you'll probably find that, averaged out over say a period of 1
> hour, an active user will perform at least 1 query every 1-2 seconds.
Given the 'duty cycle' of a broadband connection, these numbers are not wide
of the one every 5-10 seconds mentioned below.
> Then don't forget IPv6, most of the new browsers already send a query for
> AAAA at the same time they query for A.
I've seen Chrome send out queries while typing a URL for partial domain
names. I'm not quite sure how queries for 'd' 'dns' 'dns-o' 'dna-oarc'
'dns-oarc.net' help though.
> On 7 May 2012 14:42, bert hubert <bert.hubert at netherlabs.nl> wrote:
> > On Mon, May 07, 2012 at 09:13:50AM -0400, Stephane Handfield wrote:
> > > Hello DNS operators,
> > >
> > > I want to know what rules you follow in terms of capacity planning for
> > your
> > > DNS. I am mainly interested in the best planning practice for caching
> > DNS.
> > > Definitly our rules need to reflect a lots of our own reality, in term of
> > > agility of deployment, risks, etc. But I'm really interested to know if
> > > exists any rule of thumb which mostly apply to any situations.
> > Here's one. One resolving request per 'broadband residential internet'
> > subscriber per ten seconds. This is the 'smooth peak nuber'.
> > Holds up quite well, although this number is a bit old. It might be eeking
> > towards one request per five seconds now.
> > Adjust width of thumb accordingly!
> > Bert
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