Message Merging

Direct and Indirect Paths Example

In the following diagram, messages from all publishers are merged and are made available to all subscribers.

• Direct path: Network D uses of direct path transports (gray arrows) that connect every publishing endpoint to every subscribing endpoint. Each direct path transport merges message streams. Many publishers and many program processes may publish on Endpoint30. Messages received by the subscribers do not include identifying information for the publisher or the publishing program.
• Indirect path: Store4 merges the message streams from Endpoint30 and Endpoint31. Store4 backs messages from all publishers and makes them available to all subscribers. Store4 is an intermediate hop, part of several parallel, indirect paths in Network D. When a message eventually arrives at a subscriber, the message does not include identification of the publisher or the publishing program.