NET web application is spanned across three web-servers (using round-robin load balancing) what would be the best approach to maintain login-in state for the users?

NET Web应用程序的多重安全水平，是横跨三个网络服务器(使用循环负载平衡)什么是最好的方法，在保持登录状态为用户？

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And indeed, the same Washington Post poll that shows the president improving in most areas also shows that he still gets net negative ratings on managing the economy, balancing the budget, and creating jobs.

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