关于TCP迁移的集群实现方案

当前流行的集群方案通常是基于请求内容的调度，也被称为第七层调度．它充分考虑了客户请求的URL地址、请求的类型、Cookie，甚至请求上任何其他带有调度特征的属性．它由一台前置机和多个后台真实服务器构成．工作时，所有请求和回复，以及调度，都需要通过前置机来完成．因此，前置机很容易成为系统的瓶颈，而利用TCP迁移技术，可以大大缓解，甚至解决该类问题，使得前置机不再进行数据回复工作，减少大约1／3负载，大大提高系统吞吐量．

Talk about Cluster Implementations of TCP Migration

The popularcluster solution usually is to establishthe seventh layer of the ISO, the cluster sulution usually composed of a FE server and several servers. When working, all re- quests and replies,as well as scheduling needs to be done through the FE server. Therefore,the FE serve reasily be come the bottle neck of the system, using TCP migration technology, can greatly all eviate,or even to solve such problems,the FE server reduced by about 1/3 of the load, and greatly improve the system throughput amount.