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Overview:

This paper introduces YAK - a scalable content-based publish-subscribe system. YAK employs XML documents and expressive XPath queries as the publication and subscription model. To achieve high scalability, it combines the advantages of content routing in existing publish-subscribe systems and the efficient query indexing technique in the context of XML filtering. The filtering and routing strategy used in YAK exploits the locality of subscribers and therefore dramatically reduces the network communication overhead. Through performance tests, it is concluded that the YAK publish-subscribe model is highly scalable, especially when subscriptions exhibit high selectivity and regionalism.

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Format:PDFSize:436 KB
Date:Sep 2007
Pages:13

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