NDLI: Method of Locating Mirror Servers to Alleviate Load on Servers and Links

Content Provider	IEEE Xplore Digital Library
Author	Nakamura, R. Miwa, H.
Copyright Year	2011
Abstract	Recently, large-volume contents distributed by a content delivery network~(CDN) on the Internet increase the load of content delivery servers and networks, which may degrade the quality of service. To overcome this problem, some mirror servers providing the same content are located on a network, and a request is navigated to one of the mirror servers. It is important to locate the mirror servers on the appropriate place in a network, as it affects the performance of the CDN. In this paper, we address the server location problem, which determines the location of the mirror servers satisfying the following two constraints: the number of the paths to the servers in a link is small, and the number of the nodes whose nearest mirror server is the same is small. The former constraint corresponds to the alleviation of the network load, and the latter constraint corresponds to the alleviation of the server load. First, we prove that this new server location problem is NP-complete. Next, we present a heuristic algorithm and evaluate it by applying to some actual network topologies. The results show that the algorithm can determine a good server location.
Starting Page	513
Ending Page	518
File Size	581674
Page Count	6
File Format	PDF
ISBN	9781457705311
e-ISBN	9780769544236
DOI	10.1109/SAINT.2011.95
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-07-18
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Servers Mirrors Approximation algorithms Approximation methods Polynomials Internet Network topology Algorithm Content Delivery Network Server Location QoS Optimization NP-complete
Content Type	Text
Resource Type	Article

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