Already 2000 members in less than 12h:
DB Response time: 113 ms avg
PHP Response time: 800 ms avg
End-User render: 1.6 sec avg
We had 164 000 views, 4,931 messages and 460 threads in 12h... Everything running super smooth.
Really great technology. If you are interested in the 'under the hood' stuff, here is a video where we talk with the beta tester before the launch:
The setup is hosted in Microsoft Azure with 1 webserver and 1 DB server. (4 Core - 7GB Ram) We also have a slave DB for replication. All monitoring is done with NewRelic and Pingdom Real User Tracking.
We are working on the 1.2 upgrade and make the design responsive. Lot of fixed also on the skinning to be done, but it's a start.