Method and system for placing resources replication in CDN-P2P (Content Distribution Network-Peer-to-Peer) network

Abstract

The invention relates to a method and a system for placing resources replications in a CDN-P2P(Content Distribution Network-Peer-to-Peer) network. In the method, firstly, a CDN server collects the information of resources downloaded by a client in a corresponding P2P network, the information of resources required to be downloaded by the client and the communication performance index of the clientby the CDN server; secondly, the CDN server calculates the satisfiable number of requests of resources according to the information of resources downloaded and the communication performance index by the CDN server and calculates the number of download requests of resources according to the information of resources required to be downloaded; thirdly, the CDN server calculates the scarcity coefficient according to the number of download requests of resources in the corresponding P2P network and the satisfiable number of requests of resources in the P2P network; and fourthly, the CDN server selects the resources in a hierarchy of the resources from greater to smaller scarcity coefficients in the P2P network by the CDN server and downloads the replications of selected resources to the CDN server. The invention can improve the utilization ratio of the storage space of the CDN server.

Description

technical field [0001] The invention relates to the field of streaming media, in particular to a method and system for placing resource copies in a CDN-P2P hybrid network. Background technique [0002] With the rapid development of Internet technology and multimedia technology, streaming media applications are increasingly widespread, and a large number of audio and video resources are transmitted through the Internet. This not only brings a lot of economic benefits to digital content providers and network operators, but also greatly facilitates people's daily entertainment life, so that ordinary consumers can also obtain fast video services very well. [0003] Among traditional large-scale content distribution technologies, CDN (Content Distribution Network, content distribution network) and P2P (Peer-to-Peer, peer-to-peer) are widely used as two mainstream content distribution technologies. However, both have their own advantages and disadvantages. For a pure CDN network...

AI Technical Summary

Problems solved by technology

However, these replica placement strategies are suitable for pure CDN networks, and they cannot achieve good performance results in CDN-P2P hybrid networks, because they do not consider the characteristics of P2P in hybrid networks; because users in P2P networks can directly Share resources, thereby reducing the client's demand on resource servers and improving resource distribution efficiency

In a pure CDN network, when the number of user requests from a certain area increases, it tends to deploy resource copies on adjacent CDN servers; while in a CDN-P2P hybrid network, the number of user requests in a certain area increases. The increase also means that the user's ability to share resources is enhanced, which in turn reduces the possibility of deploying corresponding resource copies on adjacent servers

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