kafka相关

https://blog.csdn.net/qq_28900249/article/details/90346599
https://www.jianshu.com/p/511962462e58
https://mp.weixin.qq.com/s/DKy5oc2H8k83sFlhUNjVUw
https://mp.weixin.qq.com/s/4VBEc41TqzWXqonv4t5AFA
kafka的顺序消费方案：
https://mp.weixin.qq.com/s/rWJdlo2muurih_729BAJuQ