Actually it looks the other way around. As I read it, the "Input Disruptor" does the validation.
Do the three components all run in the same thread, or are they on different JVMs?
"Also these three tasks are relatively independent, all of them need to be done before the Business Logic Processor works on a message, but they can done in any order. So unlike with the Business Logic Processor, where each trade changes the market for subsequent trades, there is a natural fit for concurrency."
I think that the Disruptor can run on the save JVM as the business logic, also to avoid remoting-related bottlenecks.
Hmm.