Journal of Computer Applications ›› 2005, Vol. 25 ›› Issue (02): 245-247.DOI: 10.3724/SP.J.1087.2005.0245

• Network and communications • Previous Articles     Next Articles

Research on request-routing system in CDN

HU Peng, HONG Pei-lin, LI Jin-sheng, YANG Hai-song   

  1. Department of Electronic Engineering and Information Science, University of Science and Technology of China
  • Online:2005-02-01 Published:2005-02-01

内容配送网路由请求系统的研究

 胡鹏,洪佩琳,李津生,杨海   

  1. 中国科学技术大学电子工程与信息科学系
  • 基金资助:

     国家自然科学基金资助项目(90104011)

Abstract:

After DNS-based request-routing in CDN(Content Delivery Network) was analyzed firstly, the PBR2S(Policy-Based Request Routing System) architecture with policy-based of request-routing system was proposed in this article. This system could update DNS Name Server dynamically according to the state of network, it could process flash crowd more securely. Architecture, protocol and functional module were described in detail, at last the character of the system was summarized.

Key words: request-routing, policy, decision, dynamic update, security, extendiblity

摘要:

分析了内容配送网现有的DNS路由请求机制,提出一种基于策略的路由请求系统PBR2S。该系统能够根据网络的当前状态,动态地更新DNS名字服务器,可以较为安全地处理突发数据。对PBR2S的架构、协议和功能模块做了详细的说明,最后分析了系统的特性。

关键词:  路由请求, 策略, 判决, 动态更新, 安全, 可扩展性

CLC Number: