What are the differences and useage patterns for dispatchers in Akka 2?

Question

I\'ve trouble understanding the differences and recommended usage of the dispatchers in Akka 2. I think I understand how the BalancingDispatcher and the CallingThreadDispatcher

Answer 1

Dispatcher is the default implementation.
PinnedDispatcher has one thread per actor, hence the threads are pinned to their actors.

Sharability means what restrictions apply if multiple actors want to use the same dispatcher instance.

Bulkheading means isolating sections from each other - according to Wikipedia.