An Architecture for Distributed Content Delivery Network
An Architecture for Distributed Content Delivery Network
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DOI：
10.1109/icon.2007.4444113
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发表时间：
2007-11
期刊：
影响因子：
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通讯作者：
J. Mulerikkal;I. Khalil
中科院分区：
文献类型：
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作者：
J. Mulerikkal;I. Khalil
商业内容交付网络在地球仪上创建自己的服务器网络，以有效地将Web内容交付给最终用户。内容分发网络（CDN）的对等将提高商业CDN的效率。但由于巨大的基础设施成本导致的高租金仍然使中低层客户无法进入。对等CDN的学术模型旨在通过在地球仪周围形成服务器的志愿者组来降低内容分发的财务成本。但他们的效率取决于志愿者同行，他们的承诺在他们的设计中没有得到保证。我们提出了一个新的架构，将利用现有的资源，共同的互联网用户的存储空间，带宽和互联网连接，创建一个分布式内容分发网络（DCDN）。基础设施节省产生的利润池将在参与节点（DCDN代理）之间共享，这将激励他们支持DCDN。由于该系统使用有限的计算资源的普通互联网用户，我们还提出了一个合适的负载平衡（LB）算法，使DCDN代理不负担沉重的负载和请求公平地分配给他们。仿真结果表明，该架构（与LB）可以提供相同的，甚至更好的性能，商业CDN。
Commercial Content Delivery Networks create their own network of servers around the globe to effectively deliver Web content to the end-users. The peering of Content Delivery Networks (CDN) would increase the efficiency of commercial CDNs. But still the high rental rates resulting from huge infrastructure cost make it inaccessible to medium and low profile clients . Academic models of peer-to-peer CDNs aim to reduce the financial cost of content distribution by forming volunteer group of servers around the globe. But their efficiency is at the mercy of the volunteer peers whose commitment is not ensured in their design. We propose a new architecture that will make use of the existing resources of common Internet users in terms of storage space, bandwidth and Internet connectivity to create a Distributed Content Delivery Network (DCDN). The profit pool generated by the infrastructure savings will be shared among the participating nodes (DCDN surrogates) which will function as an incentive for them to support DCDN. Since the system uses the limited computing resources of common internet users, we also propose a suitable load balancing (LB) algorithm so that DCDN surrogates are not burdened with heavy load and requests are fairly assigned to them. Simulations have been carried out and the results show that the proposed architecture (with LB) can offer same or even better performance as that of commercial CDN.