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IBM Message Queue Interface

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IBM WebSphere MQ (Message Queue) is a network communication technology developed by IBM in March 1992. It was previously known as MQSeries. MQSeries was a trademark which they rebranded in 2002. This suite of products is IBM's Message Oriented Middleware offering. It allows independent and possibly non-concurrent applications on a distributed system to communicate with each other. MQ is available on a large number of platforms (IBM and non-IBM), including mainframe, Unix and Windows.

There are two parts to message queueing:

  • Messages are strings of binary data that have a meaning to the participating programs. As in other communications protocols, storage, routing, and delivery information is added to the message before transmission and stripped from the message after reception.
  • Message queues are objects that store messages in an application.

A Queue Manager is a system service that provides an Application Programming Interface for the message queue and transfers messages to another queue manager through one-way message channels.

There are several advantages to this technology:

  • Messages do not depend on packet-based transmissions, such as TCP/IP.
  • Parts of a message can be sent over several channels at the same time, speeding the transmission of larger files.
  • Messages get delivered once and once only, which assists with reliability.

APIs

There are many ways to access WebSphere MQ's facilities. Some of the APIs supported by IBM are:

There are many other unsupported APIs of which the most notable is the Perl interface, available from CPAN [1]

Awards

In 2004 WebSphere MQ won the Royal Academy of Engineering's [2] MacRobert prize [3] for technological and engineering innovation [4].

See also

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