Research And Implementation On Merged Content Distribution Management System Toward 4K Streaming Media

With the rapid development of Internet technology,the popularization of mobile network,the continuous updating of intelligent terminal products,the demand of video playback has been developing rapidly,all kinds of HD,4K HD video business is becoming popular,in the future,video-based related applications will be the main factor to accelerate the growth of network traffic,which also makes streaming media traffic grow exponentially in the network,and the high concurrent request of video content is exponential,which gives the network-content distribution Network(CDN),which is responsible for streaming media content.Content distribution networks)puts forward higher requirements.The existing content distribution network has made some progress in reducing backbone network load,speeding up user response speed and improving user experience,but there are still many deficiencies.In the load balancing technique,the existing CDN network is not ideal in its weight calculation on the commonly used weighted minimum connection algorithm,and the results obtained by the method can not accurately reflect the actual load performance of the server.;In addition,the existing algorithm in the content distribution management system does not take into account the problem of content hit ratio,in the CDN system whether the content of the hit often determines the user's request can be satisfied.In the Content Distribution management interface technology,the existing CDN management system for content requests or linear processing,when the user volume increases,while the number of online too many,the system will be overwhelmed,the phenomenon of task congestion,slow response,system cotton,the reaction of the problem of single point of pressure overload,seriously affect the distribution of video streaming and end-user experience,is also very detrimental to the follow-up operation and upgrade operations,maintenance costs high and unsustainable.In the architecture design of the integrated conternt distribution management system,there are still some problems such as slow content injection speed,low content hit rate and slow user response.Therefore,the thesis from the perspective of streaming media technology and CND network technology integration of multiple services,research on the related Technologies of CDN Network,the main work includes the following aspects:first,the research and analysis of CDN Network and streaming media key technology,understand the CDN network principle and streaming media technology principle,for follow-up research work to lay a solid theoretical foundation.Secondly,the accuracy of load balancing technology based on weighted minimum connection algorithm in CDN network is inaccurate in weight calculation.A calculation method based on the server resource condition is proposed,which needs to obtain four kinds of resources of the server and calculate the weights in a certain time.Then a multilevel load balancing strategy based on dynamic feedback is designed.Third,in the face of large data traffic,under the high concurrent request,the Content management interface system in the content distribution management interface parts and the media management parts adopt the linear processing insufficiency,proposed the improved design idea,designed and implemented the distributed interface subsystem based on the Zookeeper content distribution management,finally tested and validated the system.Finally,based on the previous research results,this paper presents a new architecture design idea of the integrated content distribution management system.The work flow and implementation method of each module are expounded in combination with relevant theories,then the system deployment and network architecture of this fusion content distribution management system are introduced,the core function modules are tested and analyzed,and the theoretical research work of this thesis is validated.In this thesis,the load balancing technology and Content management interface technology of the CDN system oriented to 4K streaming media are researched and analyzed deeply.The weighted minimum connection algorithm is optimized,the multi-level load balancing strategy based on dynamic feedback is designed,the architecture of Content management interface subsystem is improved,the Distributed Content Management interface subsystem is designed and implemented,and then the integrated content distribution management system is realized.The experimental results show that the algorithm and mechanism proposed in this paper can be used to distribute and manage the content of streaming media quickly and efficiently,improve the utilization of resources,and have important reference for the development of content distribution network.