Riptano is going to be in Seattle on Oct 8 for a full-day Cassandra training, taught by Ben Black, who many of you know from IRC and this list. The training is broken into two parts: the first covers application design and modeling in Cassandra, with exercises using the Pycassa library; the second covers operations, troubleshooting, and performance tuning. We're also hosting a happy hour the night before at http://cassandrahappyhour.eventbrite.com/.
For more details or to register for the training, see http://www.eventbrite.com/event/756085472 -- Jonathan Ellis Project Chair, Apache Cassandra co-founder of Riptano, the source for professional Cassandra support http://riptano.com