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Erschienen in:
2005 | OriginalPaper | Buchkapitel
Taming the Dynamics of Disributed Data
verfasst von : Krithi Ramamritham
Erschienen in: Distributed Computing and Internet Technology
Verlag: Springer Berlin Heidelberg
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Data gathered from (wireless) sensor networks and those delivered today via the web reflect rapid and unpredictable changes in the world around us. Clearly, the Quality of Service needs for such delivery are much more stringent than for static data. This talk will examine the nature of dynamics of distributed data, study the suitability of the current infrastructure for disseminating time varying information, and discuss fresh approaches to maintain the temporal coherency of dynamic data. We argue that executing user queries over dynamic data at the edge of the network, e.g., at Data Aggegators, improves scalability and reduce overheads but poses challenges in terms of delivering consistent query results in spite of data dynamics as well as failures in the infrastructure. How these challenges can be met by the judicious design of algorithms for data dissemination, caching, and cooperation forms the crux of the talk.