消息有关的文档

rocketmq, kafka比较: https://zhuanlan.zhihu.com/p/60196818

rocketmq的推拉模式:https://www.jianshu.com/p/8d890bdf0ab6?utm_campaign=hugo

原文地址:https://www.cnblogs.com/daixianjun/p/mq.html