Research And Implementation Of Content Delivering Mechanism In CDN-P2P System

This paper mainly discusses how to improve the process of getting resources from three different levels in the CDN-P2P prototype system, which are listed as follows:(1) From the perspective of network structure, by adapting the neighbor selection method based on similarity, the conception of "interest similarity" is introduced, the neighbors are selected more accurately by combing both resource type interest and the ratios interest of the node, so that the downloading process would be more efficient and focused.(2) From the viewpoint of resource query process in the P2P network, a query mechanism based on "interest" is proposed to meet the need of accurate and quick response, making the process of locating a resource more accurate and reducing the query message amount in the network.(3) From the standpoint of the CDN network, a content prestoring method is raised in the surrogate server, by calculating the related downloading data produced by the node’s behavior, the surrogate server communicates with the center server and a recommended resource list would be sent back to the surrogate server so that the surrogate server could response to the request of the nodes quickly and improve the quality of the download service for the nodes.