The second problem identified in the logging service example was the blocking of the service requestor process as a result of the synchronous message exchange protocol.

登录服务例子中发现的第二个问题是同步消息交换协议阻塞了服务请求者的处理。

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Guarantee message order: the protocol, design and technical solution need to ensure that logging messages submitted to the web service are processed in the order in which they are sent.

确保消息次序：协议和设计技术方案必须保证提交到Web服务的日志消息按照它们的发送时的次序在服务器端处理。

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