源地址散列调度（Source Hashing Scheduling）

Submitted by wensong on 周二, 2006-02-28 13:47

源地址散列调度（Source Hashing Scheduling）算法正好与目标地址散列调度算法相反，它根据请求的源IP地址，作为散列键（Hash Key）从静态分配的散列表找出对应的服务器，若该服务器是可用的且未超载，将请求发送到该服务器，否则返回空。它采用的散列函数与目标地址散列调度算法的相同。它的算法流程与目标地址散列调度算法的基本相似，除了将请求的目标IP地址换成请求的源IP地址，所以这里不一一叙述。

在实际应用中，源地址散列调度和目标地址散列调度可以结合使用在防火墙集群中，它们可以保证整个系统的唯一出入口。

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