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From Leif Hedstrom <zw...@apache.org>
Subject Re: Best practice for high availability clustering
Date Tue, 24 Apr 2012 15:25:40 GMT
On 4/24/12 9:15 AM, Bruce Lysik wrote:
>>> * load balancer with multiple origin servers
>>   
>> Yeah. This is a place we desperately need to improve, the yahoo load 
>> balancing plugin was open sourced, but is missing vital code dependencies :/.
>>   
>> DNS RR should kind of work too, and there is a bug / patch that implements 
>> proactive health checks (the current implementation is reactive).
>
> What does the current code do if a single origin in a RR goes offline?
>

It should mark it down. There are configurations hwo long it is marked down, 
until it tries to connect again etc. While down, the other members of the 
rotation gets all traffic.

It's definitely not an ideal setup, but works reasonable well in many cases.

-- leif


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