(Preservation of User Session Integrity In most e-commerce application systems or online systems that require user authentication, a client and server often go through several interaction processes to end a transaction or a request. Since these several interactive processes are closely related, when the server performs one of these interactive processes, it usually needs to understand the management result of the last interactive process, or the results of the previous interactive process, when the server performs the next operation. Requirements This requires all these related interactive processes to be terminated by one server, rather than being scattered to different servers by the load balancer.)
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