Administering the Tuxedo queue (/Q)

Tuxedo provides a reliable queue based on the XA-compliant resource manager (TMS – Transaction Manager Server), which provides the framework to store messages in a reliable storage and forward it to different components. These could be services, clients, or components within different Tuxedo processes. The purpose of a queue is to perform time-independent communication. Any client or server can store onto (enqueue) and retrieve (dequeue) a message from the queue. Tuxedo provides the TMQUEUE server, which provides this enqeuing and dequing service.

Tuxedo also provides a server called TMQFORWARD, which dequeues a message and forwards it to other services. Messages can be retrieved in any of several ordering schemes, including Last In, First Out (LIFO), First In, First Out (FIFO), priority order, and time-based order. More than one client or server can access the same queue. In Chapter 3, Development of Tuxedo – Various APIs, I have discussed the Tuxedo queue...