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As you know from my recent posts, I've been hanging out at 1,200 concurrent Subscribers trying to boost performance. When I first hit the 1,200 Subscriber mark, I was able to change and replicate ~13 million rows per hour. I was happy with the scalability, but the performance was no better than what I achieved with 600 concurrent Subscribers. Rather than push the scalability envelope out to 1,800 or 2,400 Subscribers, I decided to tweak, poke and prod my portable data center until I could get better performance at the 1,200 level. I succeeded with the architecture you see below:
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URL: http://blogs.msdn.com/robtiffany/archive/2008/01/15/mobile-scalability-staggering-performance.aspx