你好，10万设备批量离线，JMETER模拟，订阅上下线信息的服务重连后，后面的数据直接丢掉了，即平台后面显示的还是在线的，这类大批量离线或者在线的，如何处理比较好，EMQX能控制平稳投递给订阅者吗
connection congested: #{buffer => 4096,clientid => <<“mqtt_14420”>>,conn_state => connected,connected_at => 1721296248024,high_msgq_watermark => 8192,high_watermark => 1048576,memory => 21141952,message_queue_len => 22860,peername => <<“192.168.2.1:23432”>>,pid => <<“<0.20522.7>”>>,proto_name => <<“MQTT”>>,proto_ver => 4,recbuf => 369280,recv_cnt => 9,recv_oct => 651,reductions => 163440316,send_cnt => 17951,send_oct => 8576791,send_pend => 12744,sndbuf => 252416,sockname => <<“192.8.0.2:1883”>>,socktype => tcp,username => <<“root”>>}
这是订阅服务挂了的时候的报错信息，表示什么含义