[eternalban]

Introduce processing log messages in order to maintain order and not lose any messages, even a poisoned one. The faulty messages are processed as any other message (write a 'did msg x : faulted') and then go to a fault-queue.

If you have inter-dependence between messages, you need to have a message id scheme that shows the interdependence. For example, a hierarchical message order can have a .dot delimited scheme. If a poison message is a parent, the subsequent message can go to the fault-queue as well.