This seemed like the hot-topic in my TU application thread, but OT so I'm continuing the conversation here. I'm probably gonna test in the near future, the percona-server + galera plugin [1]. The promise is: real (awesome) parallel per-server replication. I wonder how this will affect performance.
[1] http://www.mysqlperformanceblog.com/2011/10/03/percona-server-5-5-15-galera-21-1-beta2/
