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In this article, the editor introduces in detail "what is the virtual agent in the web agent mode", the content is detailed, the steps are clear, and the details are handled properly. I hope this article "what is the virtual agent in the web agent mode" can help you solve your doubts.

Virtual agent

Many operations require the use of resources (memory, etc.), and the use of virtual proxies can take up resources only if necessary. The following figure is an example of a common communication channel in a multitasking environment.

RealChannel is the actual channel access class, which is accessed in a general on-use-off manner.

At run time, requests to use ports can be initiated from multiple tasks, and through the isolation of ChannelProxy, each user can use the communication channel as if he or she has an exclusive port. The actual port preemption and other operations are carried out in a way that the user does not need to pay attention to, and are arranged by ChannelProxy.

Protection agent

The protection agent is used to control access to the actual object.

Although the picture is the same, but the action is different.

AccessorProxy will first perform a login operation before actually accessing DbAccessor. If this operation fails, Actor appears to be open failed. Next, when accessing data, AccessorProxy will check the status of login, and finally add a logout operation in close to ensure that the longin status exits normally. All this is also done without changing the way customers use it.

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