%0 Journal Article
%T 针对网络故障的可靠Web分发：一种路径感知的节点协助方法<br>Towards Reliable Web Content Delivery against Network Failures: A Path-Aware Peer-Assisted Approach
%A 黄超峰
%A 胡文
%A 孙立峰
%J Computer Science and Application
%P 81-97
%@ 2161-881X
%D 2020
%I Hans Publishing
%R 10.12677/CSA.2020.101010
%X <div style=\"text-align:justify;\">
	<span style=\"font-size:14px;\">网络多媒体内容的碎片性、动态内容不可缓存性等特性对传统内容分发提出了极大挑战。基于用户网页内容访问模式，本文采用WebRTC技术，利用浏览器协助机制，提出基于请求转发的碎片化动态内容分发算法。本文基于实际系统日志，研究用户的网页浏览行为(包括在线时长分布，重复访问规律)、应用层网页访问故障分布以及网络层网络状态变化，设计节点状态感知的转发节点选择算法。该算法基于网络层信息，同时考虑网页分发的新特性，提出请求转发机制。通过重构用户–用户–服务器的分发路径，恢复网页内容分发故障，“透明”增强用户端感知的系统可靠性。<br />
The characteristics including the fragmentation and non-cacheable dynamic content of network multimedia present a great challenge to traditional content distribution. Based user's web browsing patterns, in this paper, we propose a dynamic content distribution algorithm based on request forwarding, with WebRTC technology and browser-assist mechanism. We analyse user’s browsing behaviors (e.g., including online duration and visiting frequency), application-layer web page request failure, network layer network condition change based on the real-world log system to design a condition-aware redirecting node selection algorithm. The algorithm utilizes the network-layer information, while considering the new characteristics of the Web, and proposes a request forwarding mechanism. By reconstructing the user-user-server distribution path and restoring the failure of web content distribution, \"transparency\" enhances the system reliability perceived by the client.</span> 
</div>
%K 网络应用，网络，WebRTC，CDN，转发机制，网络故障<br>Web Applications
%K Networks
%K WebRTC
%K Web Content Delivery
%K Peer-Assisted
%K Network Failures
%U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=33991