kafka的topic是什么(kafka工作原理cluster topic parti

一、几个概念
二、几个技术点
2.1、kafka消息是否有序
kafka消息在同一个partition里是有序的,超出partition就不能保证有序了
2.2、kafka zookeeper.connect bootstrap.server
可以看到kafka0.8之前是使用zookeeper.connect,到kafka0.8及以后换成了bootstrap.server。 0.8使用的是metadata.broker.list
参见官方github示例
https://github.com/apache/kafka/blob/0.7.0/examples/src/main/java/kafka/examples/Producer.javagithub.com/apache/kafka/blob/0.9.0/examples/src/main/java/kafka/examples/Producer.java
https://github.com/apache/kafka/blob/0.8.0/examples/src/main/java/kafka/examples/Producer.javagithub.com/apache/kafka/blob/0.9.0/examples/src/main/java/kafka/examples/Producer.java
https://github.com/apache/kafka/blob/0.9.0/examples/src/main/java/kafka/examples/Producer.javagithub.com/apache/kafka/blob/0.9.0/examples/src/main/java/kafka/examples/Producer.java


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