Software Architect's Handbook

The point-to-point channel pattern

The point-to-point channel pattern is a messaging pattern used when we want to ensure that there will be exactly one receiver for a given message. If a channel has multiple receivers so that more than one message can be consumed concurrently, and more than one receiver attempts to consume a message, the event channel will ensure that only one of them succeeds. Since the event channel is handling that, it removes any need for coordination between the event processors.