On May 19, 2010, at 3:40 PM, Matt Iavarone wrote:

> I think the original question was around stateless load balancing,  
> not clustering.  Cross DC clustering is a headache, but HA web sites  
> aren't exactly terchnical challenges these days.
>

He said he wanted 1 server in each data center, so that his website  
would be available even if 1 data center goes down.  That's HA not  
load balancing.  I disagree that it's not a challenge.  Remote data  
centers means the likelihood of split brain goes up quite a lot, as  
compared to a set of servers connected via crossover ethernet or via  
serial cable.
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