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An Overview of the OMG CORBA Messaging Quality of Service (QoS) Framework

Overview This is the final column in our series covering the OMG CORBA Messaging specification. Our previous columns in this series covered the communications models supplied by Messaging, explained how to program asynchronous method invocations (AMI) in C++, and described time-independent invocation (TII) and interoperable routing. We finish this series by highlighting the quality of service (QoS) framework supplied by the OMG Messaging specification. Quality of service (QoS) is a widely accepted term that describes activities and technologies designed to improve and control communication-oriented resource management for applications and systems. Many distributed applications need to selectively configure and optimize various QoS aspects, such as the end-to-end latency of particular requests, the aggregate throughput over some interval, the reliability of one-way message delivery, or how long a client spends waiting for a reply before it times out. Therefore, the OMG Messaging specification defines a QoS framework that allows applications to configure and control various aspects of ORB behavior. This framework defines a set of policy objects, a framework for managing the policies, and extensions to GIOP/IIOP that communicate policies between ORBs.

Further White Paper Details
Publisher	IONA Technologies	File Format	PDF, requires Acrobat Rdr 5
Date Published	March 2000	Downloads	2
Format	White Papers
Topics	Quality of Service, Object-Oriented, Programming Languages

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