wget https://dl.bintray.com/rabbitmq/community-plugins/3.8.x/rabbitmq_delayed_message_exchange/rabbitmq_delayed_message_exchange-20191008-3.8.x.zip
Before Han and re-download and install the same
rabbitmq 报错信息：reply-code=503, reply-text=COMMAND_INVALID - unknown exchange type 'x-delayed-message'
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Origin blog.csdn.net/edtwar/article/details/105178593
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