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[帮助文档] 使用LinkIoTEdge时产生的MQTT消息和网络流量情况

当前Link IoT Edge产品是免费的，但使用Link IoT Edge时会产生消息和流量消耗。本文将为您介绍使用Link IoT Edge时产生的MQTT消息和网络流量情况。

阿里云mqtt在网络断开(只是网络异常情况)情况服务器接收离线通知要等几分钟才分出来

关闭mqtt客户端是能马上就接收到离线通知，就是在网络异常发出通知速度很慢

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