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A study on architecture of CDN(Content Delivering Network) with content re-distribution function

机译：内容重新分配函数CDN（内容交付网络）架构研究

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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 RDCDN 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.
机译：分布式内容提供网络（DCDN）将在存储空间，带宽和Internet连接方面利用共同Internet用户的现有资源，以创建它。然而，DCDN具有效率低效使用存储空间，可靠性和具有特殊负载平衡（LB）算法的限制。因此，本文提出基于重新分布的CDN（RDCDN）克服了DCDN的局限性。 RDCDN具有内容重新分配算法，并将代理分离为主要代理和子替代物。主要代理可以通过将所有内容存储为备份系统来帮助服务可靠性。内容重新分发算法也可以帮助保存存储空间，因为所有内容都没有存储在每个代理中。特别是，当RDCDN使用内容重新分配算法时，它可以在没有像DCDN的情况下工作的有效负载平衡功能，而无需额外的LB算法。仿真结果表明，该建议可以提高存储空间的可靠性和效率，也可以提供与商业CDN和DCDN相同的性能。

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