Message-Oriented Architecture by Patrik

MOA Terms

Terms

Connects message Producers with message Consumers
Handler: The logic of the consumer
Command; Message that requests a change of state
Event: Message that indicates something of interest (no change of state)
Topic/Subscription: Special queues that allow inbound messages to be picked up by multiple interested parties
Service Bus: An ESB platform
Pipeline: A logic stream of messages that are related to each other
Idempotent: Operation that, when repeated, will produce the same result
Guaranteed delivery: Messages are stored and forwarded to ensure they are delivered
At least once delivery: To achieve reliability, there may be occasions that messages are sent more than once
Loosely Coupled: All communication is done via messages
Platform Agnostic: Producer and Consumer may be on different platforms
Asynchronous: Producer can continue work after sending messages to the Broker