Message Type Patterns
The message itself is simply some sort of data structure—such as a string, a byte array, a record, or an object. It can be interpreted simply as data, as the description of a command to be invoked on the receiver, or as the description of an event that occurred in the sender. Sender can send a Command Message , specifying a function or method on the receiver that the sender wishes to invoke. It can send a Document Message , enabling the sender to transmit one of its data structures to the receiver. Or it can send an Event Message , notifying the receiver of a change in the sender. The following message type patterns can commonly be used in SOA. . Messaging Channel Patterns Channels, also known as queues, are logical pathways to transport messages. A channel behaves like a collection or array of messages, but one that is magically shared across multiple computers and can be used concurrently by multiple applications. A service provider is ...