How MQe extends the MQ family

MQe extends the messaging scope of the MQ family by:
  • Supporting low-end devices, such as PDAs, telephones, and sensors. MQe also supports intermediate devices such as laptops, workstations, distributed, and host platforms. MQe offers once and once-only assured delivery of messages, and permits message exchange with other family members.
  • Offering lightweight messaging facilities.
  • Providing extensive security features to protect messages, queues, and related data, whether in storage or in transmission.
  • Operating efficiently in hostile communications environments where networks are unstable, or where bandwidth is tightly constrained. MQe has an efficient wire protocol and automated recovery from communication link failures.
  • Supporting the mobile user, allowing network connectivity points to change as devices roam. MQe also allows control of behavior in conditions where battery resources and networks are constrained.
  • Operating through suitably configured firewalls.
  • Minimizing administration tasks for the user. This makes MQe a suitable base on which to build utility-style applications.
  • Being easily customized and extended, through the use of application-supplied rules.
MQe does not support all the functions of MQ. Apart from environmental, operating system and communication considerations, these are some of the more significant differences:
  • No clustering support
  • No distribution list support
  • No grouped or segmented messages
  • No load balancing or warm standby capabilities
  • No reference message
  • No report options
  • No shared queue support
  • No triggering
  • No unit of work support, no XA-coordination
  • Different scalability and performance characteristics
However, within MQe many application tasks can be achieved through alternative means using MQe features, or through the exploitation of subclassing, the replacement of the supplied classes, or the exploitation of the rules, interfaces, and other customization features built into the product.

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