| 摘要 |
In a method of providing granular quality of service in a hybrid content distribution network of classical distribution in a network via client-server plus very distributed mechanisms operating peer to peer inside the network, content is replicated in a large number of endpoint nodes, some of which are CPEs of broadband subscribers, and backed by a few storage servers to ensure content availability. Traffic is delivered by a mixture of P4P for choice of seeds and selection of good neighborhoods for quick content download. The ISP uses the unsold physical capacity of the link for CDN service and other underutilized resources, and enforces seeding at many nodes including broadband subscriber CPEs. By having a large farm of nano-datacenters distributed across the network, including the premises of broadband customers, the ISP can maintain and run a CDN. A tracker determines where to seed the content, depending on the number of broadband subscribers requesting the content, the geographical distribution of requested content, and the Service Level Agreement between content providers and the ISP. The tracker can seed a sufficient number of nodes to ensure redundancy.
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