基于Web平台的CDN监测系统的研究与实现

发布时间：2018-05-29 22:26

本文选题：内容分发网络 + Web平台　；参考：《华东理工大学》2014年硕士论文

【摘要】：通信技术、Web应用技术、无线互联网的发展,以及各种运营商的介入,使得网络间路由越来越复杂,跨运营商访问速度越来越缓慢。同时给视频,网页等网络服务带来的挑战也越来越严峻。 CDN(Content Delivery Network)(?)内容分发网络。是以互联网为基础的专业化综合平台,通过应用层的内容智能路由,自动保证用户实现就近访问,从而提高了服务访问速度,为网站提供了高效、稳定、安全的内容和应用服务。在Web应用大规模使用CDN的同时,CDN加速后质量的好坏备受关注。传统测速方式一般是在想要监测的网页内容添加Javascript监测代码(一种基于对象和事件驱动并且具有高安全性的客户端脚本语言),当用户访问时会向服务端发送监测数据。这种被动监测的测速方式存在很多缺点,比如得不到TCP建立连接的时间,比如Javascript代码没有执行,导致无法获得数据。针对这些缺点,本文首先提出了一种主动测速方式,模拟真实用户行为,自主研发监测客户端,访问被监测页面。然后,设计了一种基于Web平台的CDN监测系统。运用自主研发客户端主动监测和传统Javascript被动监测相结合的方式,使收集的数据更加全面。收集完数据后,经过归类分析,从速度、时间段、省份、运营商等几个方面可视化地展现各维度分析模型,从而能够全面分析CDN的质量。
[Abstract]:Communication technology Web application technology, the development of wireless Internet, as well as the involvement of various operators, make inter-network routing more and more complex, cross-operator access speed is becoming more and more slow. At the same time to video, web pages and other network services brought more and more serious challenges. CDN(Content Delivery Network) Content distribution network. Is a professional comprehensive platform based on the Internet, through the application layer of the content intelligent routing, automatically ensure that users can access the nearest, thus improving the speed of service access, providing a high efficiency and stability for the website, Secure content and application services. At the same time, the quality of Web accelerated by CDN has attracted much attention. The traditional method of speed measurement is to add Javascript monitoring code to the content of the web page to be monitored (a client-side scripting language with high security based on object and event driven, which sends monitoring data to the server when the user accesses it). This passive speed measurement method has many disadvantages, such as the time when the TCP is not connected, such as the Javascript code is not executed, resulting in the lack of access to data. Aiming at these shortcomings, this paper first proposes an active speed measurement method, simulates the real user behavior, independently develops the monitoring client, and visits the monitored page. Then, a CDN monitoring system based on Web platform is designed. By combining active monitoring with traditional Javascript, the collected data are more comprehensive. After collecting the data, the model can be visualized from several aspects, such as speed, time period, province, operator and so on, so that the quality of CDN can be comprehensively analyzed.
【学位授予单位】：华东理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP274;TP393.09

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