Maintained by: NLnet Labs

[Unbound-users] prefetch popular? Was: unbound-1.4.2 release

W.C.A. Wijngaards
Tue Mar 16 11:07:48 CET 2010


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Hi Florian,

Yes very simply configuration, so that you cannot shoot yourself (or the
upstream servers).

Popular means a query arrived during the last 10% of the TTL of the
message.  In general this would be domains that get more than 10 queries
per their TTL.  In general this would add a limited load to the system
and traffic to authorities.

This also means that if no queries are received, the cache times out
normally.

Best regards,
   Wouter

On 03/15/2010 10:36 PM, Florian Lohoff wrote:
> What is "popular" in this respect? I mean top X percent of an LRU list?
> X queries for an RR in Y seconds?
> 
> Just "prefetch: yes" sounds like real "magic" and a little bit black box.
> 
> Flo
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