RabbitMQ的生產者消息確認(Publisher Confirms and Returns)和消費者ACK

https://www.cnblogs.com/wangzhongqiu/p/7815529.html

https://blog.csdn.net/u012129558/article/details/82425276

原生的實現方式
https://blog.csdn.net/cj337083172/article/details/79730438

mandatory：
https://blog.csdn.net/wangming520liwei/article/details/82799514
http://www.mamicode.com/info-detail-1673003.html