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Issue No. 05 - May (2001 vol. 2)
ISSN: 1541-4922
pp: null
Nanbor Wang , Washington University
Douglas C. Schmidt , University of California, Irvine
Michael Kircher , Siemens ZT
Kirthika Parameswaran , Washington University
Existing middleware specifications, such as Real-Time CORBA and CORBA Messaging, address many quality-of-service (QoS) properties by defining policies that control connection multiplexing, request priority, queuing order, routing, and dependability. They do not, however, define strategies for configuring these QoS properties into applications flexibly, transparently, and adaptively. Application developers must therefore make these configuration decisions manually. This process is tedious and error-prone, and suboptimal for complex distributed realtime and embedded (DRE) systems. Although the recently adopted CORBA Component Model (CCM) defines a standard configuration framework for packaging and deploying software components, conventional CCM implementations focus on functionality rather than adaptive QoS, which makes the CCM currently unsuitable for DRE applications with demanding QoS requirements.

D. C. Schmidt, M. Kircher, N. Wang and K. Parameswaran, "Adaptive and Reflective Middleware for QoS-Enabled CCM Applications," in IEEE Distributed Systems Online, vol. 2, no. , pp. null, 2001.
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