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An Architecture and Performance Evaluation of RDCDN (Re-Distribution based CDN)  

Sung, Moo-Kyung (한국외국어대학교 전자정보공학부)
Han, Chi-Moon (한국외국어대학교 전자정보공학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.34, no.6B, 2009 , pp. 559-567 More about this Journal
Abstract
Distributed Content Delivering Network (DCDN) will make use of the existing resources of the common Internet users in terms of storage space, bandwidth and Internet connectivity to create it. However DCDN has some limitations that are inefficient using of storage space, reliability and having special load balancing (LB) algorithm. So, this paper proposes Re-distribution based CDN (RDCDN) that overcomes the limitations of DCDN. RDCDN has the content re-distribution algorithm and separates surrogates to main surrogate and sub surrogates. Main surrogate can help service reliability be improved by storing all contents as back-up system. And content re-distribution algorithm also can help storage space be saved because all contents are not stored in every surrogate. Especially, when RDCwDN uses content re-distribution algorithm, it can work active load balancing function without extra LB algorithm like as DCDN. Results of simulation show that the proposed architecture can improve reliability and efficiency of storage space, and it also can offer the same performance as that of commercial CDN and DCDN.
Keywords
CDN; Surrogate; RDCDN(Re-Distribution based CDN); Algorithm; Hybrid;
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