WebSphere WebSphere Application Server Version 6.1.x Feature Pack for Web Services Operating Systems: AIX, HP-UX, i5/OS, Linux, Solaris, Windows, z/OS

Messaging between two application servers through WebSphere MQ

You can use WebSphere MQ links to send a message from one WebSphere Application Server application server to another through a WebSphere MQ network.

You can exchange messages between two WebSphere Application Server application servers through an intermediate WebSphere MQ system, as shown in the figure below.
Figure 1. Exchanging messages between two application servers through an intermediate WebSphere MQ network.
An application server (on the left), linked to a WebSphere MQ system (in the middle), linked to another application server (on the right).

Although there are differences between WebSphere Application Server and WebSphere MQ, WebSphere Application Server has the WebSphere MQ link feature, which automatically takes care of most message conversion (of course, data conversion is under your control). A message arriving at a target application server is the same as that leaving the transmitting WebSphere Application Server, despite its conversion from WebSphere Application Server format to WebSphere MQ format and back to WebSphere Application Server format.

WebSphere MQ request messages contain a single reply-to queue name to which a receiving application can send responses. The service integration bus has a more advanced reply path (not just a single queue name). You can use reply-to queues for point-to-point messages (queues) and for topics.

Messages with topic style reply-to destinations must have the appropriate publish and subscribe bridge topic mappings defined in the relevant direction in order for reply messages to be transferred between a WebSphere MQ network and WebSphere Application Server. This is not automatic as it is for messages with queue reply destinations.


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Timestamp icon Last updated: 27 November 2008
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