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我有一个简单的规则设置,它检查事件数据中的温度传感器值是否大于 30 摄氏度并触发 NodeRed 流作为操作。我看到触发动作有延迟。我看到的延迟大约是一分钟到半小时。这与正在发送的事件数据消息的 QoS 级别有关吗?