CDN技术在国家电网公司外网邮件系统中的应用

内容分发网络（CDN）是一个建立并覆盖在互联网,并由分布在不同区域的节点服务器群组成的虚拟网络。CDN将信息资源推向网络边缘,使得客户快速访问到所需的内容,从而提高了终端用户的访问速度。文章根据国家电网外网邮件系统集中部署存在的问题,采用最新的通信技术设计部署了一套CDN网络,通过静态加速与动态加速2种方式对邮件系统进行加速。静态加速基于HTTP协议,对邮件Webmail系统进行加速;动态加速采用基于网络四层的透明传输技术及智能路由优化技术,可大大提高网络数据的传输效率。

Application of CDN Technology in SGCC Web Mail System

Content delivery network（CDN） is an established and covered on the internet, virtual network consisting of nodal servers located in different regions. CDN brings information resources to the network edge, allowing customers to access content, thus improving the terminal user access speed. A CDN network using new communication technology is designed and deployed to solve the problems in SGCC internet mail system with two ways of static acceleration and dynamic acceleration. Static acceleration is based on HTTP protocol and the internet mail system is accelerated by this way. Dynamic acceleration is using transparent transmission technology of network with four layers and intelligent routing optimization technology, which can greatly improve the effi ciency of network data transmission.