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Exact algorithms for the joint object placement and request routing problem in content distribution networks

Record type: Article

This paper describes two exact algorithms for the joint problem of object placement and request routing in a content distribution network (CDN). A CDN is a technology used to efficiently distribute electronic content throughout an existing Internet Protocol network. The problem consists of replicating content on the proxy servers and routing the requests for the content to a suitable proxy server in a CDN such that the total cost of distribution is minimized. An upper bound on end-to-end object transfer time is also taken into account. The problem is formulated as a nonlinear integer programming formulation which is linearized in three different ways. Two algorithms, one based on Benders decomposition and the other based on Lagrangean relaxation and decomposition, are described for the solution of the problem. Computational experiments are conducted by comparing the proposed linearizations and the two algorithms on randomly generated Internet topologies.

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Citation

Bektas, T., Cordeau, J-F., Erkut, E. and Laporte, G. (2008) Exact algorithms for the joint object placement and request routing problem in content distribution networks Computers & Operations Research, 35, (12), pp. 3860-3884. (doi:10.1016/j.cor.2007.02.005).

More information

Published date: December 2008
Keywords: OR in telecommunications, content distribution network, linearization, benders decomposition, lagrangean relaxation and decomposition
Organisations: Management

Identifiers

Local EPrints ID: 51356
URI: http://eprints.soton.ac.uk/id/eprint/51356
ISSN: 0305-0548
PURE UUID: 7ba331f9-a6e7-4fb6-b2c4-c982cf012bd8
ORCID for T. Bektas: ORCID iD orcid.org/0000-0003-0634-144X

Catalogue record

Date deposited: 06 Jun 2008
Last modified: 17 Jul 2017 14:48

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Contributors

Author: T. Bektas ORCID iD
Author: J-F. Cordeau
Author: E. Erkut
Author: G. Laporte

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