kafka顺序消费

https://www.cnblogs.com/hopelee/p/7285340.html    kafka与pykafka

https://blog.csdn.net/bigtree_3721/article/details/80953197     顺序消费的讨论

https://blog.csdn.net/clean_fish/article/details/90632988  pykafka生产消息

https://www.jianshu.com/p/453c6e7ff81c   参考rabitmq设计

https://blog.csdn.net/chaiyu2002/article/details/89472416   kafka的offset设置原理

顺序消费,需要只有一个partition