Concepts
This section describes the concepts of intra-group queuing.
Intra-group queuing (IGQ) can effect potentially fast and less-expensive small message transfer between queue managers within a queue-sharing group (QSG), without the need to define channels between the queue managers. That is, intra-group queuing can be used to deliver, more efficiently, small messages to queues residing on remote queue managers within a queue-sharing group.
The following diagram shows a typical example of intra-group queuing.
Figure 1. An example of intra-group queuing
The diagram shows:
- IGQ agents running on three queue managers (QMG1,QMG2 and QMG3) that are defined to a queue-sharing group called SQ26.
- Shared transmission queue SYSTEM.QSG.TRANSMIT.QUEUE that is defined in the Coupling Facility (CF).
- A remote queue definition that is defined in queue manager QMG1.
- A local queue that is defined in queue manager QMG2.
- A requesting application (this could be a Message Channel Agent (MCA)) that is connected to queue manager QMG1.
- A server application that is connected to queue manager QMG2.
- A request message being placed on to the SYSTEM.QSG.TRANSMIT.QUEUE.
Parent topic:
Intra-group queuing
ic15890_
Home
