Research On Key Technology Of High Efficient Content Distribution In Hybrid Network

Content distribution network is one of the key technologies to solve the problems of narrow network bandwidth,large number of user accesses and uneven distribution of network nodes.By building CDN networks,we can transmit content to the network edge which is nearest to the users.In this way,the users can get content nearby which can improve the service quality.However,in hybrid wireless networks,the content distributed according to the network status can obtain higher distribution efficiency,which requires the contents distributed dynamically.The traditional content distribution method for single network environment does not apply to such a complex network environment.So,It is necessary for us to study a more efficient dynamic content distribution architecture for the hybrid network environment.In this paper,we first proposed a network performance evaluation method based on coefficient of variation according to the results of hybrid network monitoring.This method takes account of the difference between physical characteristics and different performance indicators of different channels.At the same time,we design a method of visualizing management of the whole system in the form of HTML5 web.Through web display,we can find the problems and performance trends of network more intuitively.Then,on the basis of hybrid network monitoring,in order to solve the problem of lack of dynamic in CDN architecture,we propose an efficient content delivery architecture based on Storm.In this architecture,content can be distributed more dynamically and efficiently according to the performance of the server nodes.In addition,we also study the new efficient content distribution architecture of NDN,and provide a way using blockchain to solve the security and authentication problems of content distribution network.