nginx performance using resolver

[Nginx Lova]

Igor Sysoev wrote:
> On Thu, Feb 05, 2009 at 04:20:31PM +0100, Nginx Lova wrote:
> 
>> >     resolver_timeout  2s;
>> > 
>> 
>> Does this expire the records the resolver knows about ?
> 
> No, this resolving timeout only.
> The expiration time is currently hardcoded to 5 minutes.
> 

So this sets the resolver to timeout at a specific type of search ?

first it checks upstreams then dns , so does this set the timeout for 
upstreams to 2s ? then the dns to 2s ?


Thanks.


>> If so , why would this help ?
>> 
>> 
>> Where can I find more documentation on this ?
>> If it doesn't exists I'd like to contribute.
> 
> As I know, there is no English documentation on this.

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