在用户层查看性能数据的功能可以分别查看每个客户端用户ID的工作负载。
The ability to view performance data at the user level allows the workload of each client user ID to be viewed independently.
用户认证协议：该协议从服务器到客户端进行身份验证，且通过传输层运行。
User Authentication protocol: This protocol authenticates the client to the server and runs over the transport layer.
用户认证层提供客户端身份验证以及多种验证方法。
A user authentication layer provides authentication for clients as well as several authentication methods.
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