Producers and Consumers

Aside from the reliability your client requires, the design decisions that relate to producers and consumers include the following:

• Do you want to use a point-to-point or a publish/subscribe domain?

  There are some interesting permutations here. There are times when you would want to use publish/subscribe even when you have only one subscriber. Performance considerations might make the point-to-point model more efficient than the publish/subscribe model, when the work of sorting messages between subscribers is too costly. Sometimes these decisions cannot be made in the abstract, but different prototypes must be developed and tested.

• Are you using an asynchronous message consumer that does not get called often or a producer that is seldom used?

  You might need to adjust the MQ_PING_INTERVAL_PROPERTY when you create your connection, so that your client gets an exception if the connection should fail. For more information see Connection Handling.

• Are you using a synchronous consumer in a distributed application?

  You might need to allow a small time interval between connecting and calling the MQReceiveMessageNoWait function in order not to miss a pending message. For more information, see usage information in the section MQReceiveMessageNoWait.