Some WebSphere MQ applications that serve queues run continuously, so they are always available to retrieve messages that arrive on the queues. However, this may not be desirable when the number of messages arriving on the queues is unpredictable. In this case, applications could be consuming system resources even when there are no messages to retrieve.
WebSphere MQ provides a facility that enables an application to be started automatically when there are messages available to retrieve. This facility is known as triggering.
For information about triggering channels see WebSphere MQ Intercommunication.
This chapter introduces triggering, under these headings: