[dns-operations] max-clients-per-query limit

Shawn Zhou shawnzhou00 at yahoo.com
Tue Apr 4 18:03:22 UTC 2017


Hi Evan,
How long is the time window that BIND uses to calculate the identical lookups?Is it over 1-minute window? or 5-minute window?

Thanks,Shawn

      From: Evan Hunt <each at isc.org>
 To: Shawn Zhou <shawnzhou00 at yahoo.com> 
Cc: "dns-operations at lists.dns-oarc.net" <dns-operations at dns-oarc.net>
 Sent: Wednesday, March 22, 2017 10:07 PM
 Subject: Re: [dns-operations] max-clients-per-query limit
   
On Wed, Mar 22, 2017 at 10:05:35PM +0000, Shawn Zhou wrote:
> What happens when max-clients-per-query is reached? say, we have 120
> duplicate requests and the max-clients-per-query is set to 100. Do the 20
> "extra" requests got dropped or get timeouts or they will be part of next
> grouped requests?

They're dropped.

-- 
Evan Hunt -- each at isc.org
Internet Systems Consortium, Inc.


   
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