负载平衡器利用这一信息将需求发送给相应的服务器子集。
The load balancer USES this information to dispatch requests to the proper server subset.
因为每一个服务器节点都有相同的对话状态信息，所以这些选项允许负载平衡器将请求转发到随机或最繁忙的服务器节点。
Those options allow the load balancer to forward requests to a random or the least-busy server node, because every server node has the same session-state information.
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