A Case for Peering of Content Delivery Networks
A Case for Peering of Content Delivery Networks
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DOI：
10.1109/mdso.2006.57
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发表时间：
2006-09
期刊：
影响因子：
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通讯作者：
R. Buyya;A. Pathan;J. Broberg;Z. Tari
中科院分区：
文献类型：
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作者：
R. Buyya;A. Pathan;J. Broberg;Z. Tari
服务提供商通常在地理上分布他们的Web服务器设施，以提高性能、可靠性和可伸缩性。内容交付网络于1998年首次发展，它通过几个镜像Web服务器复制内容，这些服务器战略性地放置在不同的位置，以处理突发人群并提高响应时间。CDN通过最大化带宽、提高可访问性以及通过内容复制保持正确性来提高网络性能。不幸的是，尽管存在许多商业CDN提供商，但它们并不以可扩展的方式向最终用户提供内容。此外，内容提供商通常订阅一个CDN提供商，因此不能同时使用多个CDN。这种封闭的、非合作的模型导致CDN的“孤岛”。我们提出了一个开放的，可伸缩的，面向服务的体系结构（SOA）为基础的系统模型。该系统有助于创建可扩展性良好的开放内容和服务交付网络（CSDN），并可以通过合作和协调与其他CSDN共享资源，从而克服孤岛CDN问题
Service providers often geographically distribute their Web servers' facilities to improve performance, reliability, and scalability. Content delivery networks, which first evolved in 1998, replicate content over several mirrored Web servers, strategically placed at various locations to deal with flash crowds and to enhance response time. A CDN improves network performance by maximizing bandwidth, improving accessibility, and maintaining correctness through content replication. Unfortunately, although many commercial CDN providers exist, they don't cooperate in delivering content to end users in a scalable manner. In addition, content providers typically subscribe to one CDN provider and thus can't use multiple CDNs at the same time. Such a closed, noncooperative model results in "islands" of CDNs. We present a model for an open, scalable, and service-oriented architecture (SOA)-based system. This system helps to create open content and service delivery networks (CSDNs) that scale well and can share resources with other CSDNs through cooperation and coordination, thus overcoming the island CDN problem