NDLI: QoS-aware discovery of wide-area distributed services

Content Provider	IEEE Xplore Digital Library
Author	Dongyan Xu Nahrstedt, K. Wichadakul, D.
Copyright Year	2001
Description	Author affiliation: Dept. of Comput. Sci., Illinois Univ., Urbana, IL, USA (Dongyan Xu)
Abstract	Global computational grids bring together distributed computation/communication resources. Beyond this, we envision the emergence of global 'service grids', which provide a 'market' of application-level distributed services for clients to discover and to request. We study the issue of wide-area service discovery in service grids. We start with an existing basic wide-area service discovery framework. The framework adopts a scalable architecture consisting of a hierarchy of Discovery Servers. We then identify problems with the basic framework, and propose our enhancement of query responsiveness and QoS awareness. The key techniques we introduce include: (1) the addition of QoS feedback capability to clients; and (2) the caching and propagation of discovery results with QoS feedback in the discovery server hierarchy. With these techniques, the enhanced service discovery framework will be faster in finding qualified service providers. Furthermore, it will select a 'good' (with respect to the QoS to be delivered) service provider for each querying client, based on QoS feedback.
Sponsorship	IEEE Comput. Soc.
Starting Page	92
Ending Page	99
File Size	768133
Page Count	8
File Format	PDF
ISBN	0769510108
DOI	10.1109/CCGRID.2001.923180
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-05-15
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Grid computing Feedback Delay Quality of service Distributed computing Computer science Laboratories Information management Quantum cascade lasers Frequency
Content Type	Text
Resource Type	Article

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