摘要： With the boom of the network technology, all kinds of services based on the Internet come into being. A-mong them, the most promising one is the video service. All of this kind of service has been paid much attention,such as videoconference and video-on-

关键词: 视频代理缓存服务器 设计 Internet 服务质量 局域网 广域网 网络拥塞