Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/36960
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Type: Conference paper
Title: An optimal method for coordinated en-route web object caching
Author: Li, K.
Shen, H.
Citation: High performance computing : 5th International Symposium, ISHPC 2003, Tokio-Odaiba, Japan, October 20-22, 2003 : proceedings / Alex Veidenbaum ... [et al.], pp. 368-375
Publisher: Springer
Publisher Place: Berlin
Issue Date: 2003
Series/Report no.: Lecture notes in computer science ; 2858.
ISBN: 3540203591
9783540397076
ISSN: 0302-9743
1611-3349
Conference Name: International Symposium on High Performance Computing (5th : 2003 : Tokyo, Japan)
Statement of
Responsibility: 
Keqiu Li and Hong Shen
Abstract: Web caching is an important technology for saving network bandwidth, alleviating server load, and reducing the response time experienced by users. In this paper, we consider the object caching problem of determining the optimal number of copies of an object to be placed among en-route caches on the access path from the user to the content server and their locations such that the overall net cost saving is maximized. We propose an object caching model for the case that the network topology is a tree. The existing method can be viewed as a special case of ours since it considers only linear topology. We formulate our problem as an optimization problem and the optimal placement is obtained by applying our dynamic programming-based algorithm. We also present some analysis of our algorithm, which shows that our solution is globally optimal. Finally, we describe some numerical experiments to show how optimal placement can be determined by our algorithm.
Keywords: Web caching; optimization problem; dynamic programming; algorithm
Description: The original publication is available at www.springerlink.com
RMID: 0020065790
DOI: 10.1007/978-3-540-39707-6_31
Published version: http://www.springerlink.com/content/wwl2422ncx55vt6p/
Appears in Collections:Computer Science publications

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