CQRS & Event Sourcing

CQRS & Event Sourcing are two closely related architectural approaches to DDD and they are the hottest topics in DDD of the last couple of years. This page collects materials on these topics.
Martin Fowler's write-up of the Event Sourcing pattern is a good place to start. 

Clarified CQRS by Udi Dahan

Udi Dahan tries to address some of the misconceptions about CQRS and clarify the subject and how it connects to other architectural patterns.

A Discussion with Allard Buijze on CQRS with the Axon framework

The Axon framework is a Java implementation of the Command and Query Responsibility Segregation.

Eric Evans on the State of the Art in DDD

Interview with Eric EvansEric Evans speaks about the current state of the art in Domain-Driven Design after QCon San Francisco conference in October of 2008

Greg Young Interviewed by Eric Evans on Event Sourcing

Eric Evans interviewed Greg Young about Event Sourcing at QCon SF 2007. One of Greg's earliest explanations of Event Sourcing.