Giuseppe Maxia of Continuent presents "Creating Multi-master Clusters with Tungsten Replicator" at the 2013 Open Database Camp at Northeast LinuxFest.
From the abstract: Replication with multiple masters is a much desired feature. Using Tungsten replicator, users can create multiple masters topologies in minutes, from all-masters to star topologies, with a look at fan-in replication. Since multiple masters introduce the possibility of data clashes, we will also cover some ways of preventing conflicts with Tungsten filters.