Kafka Realize and use

一、 Concept

the broker connects to the zookeeper
zookeeper  recorder broker status
                   elect one broker as a controller
                           controller manage partition and replication-factor status
                  record topic list, amount of topic's partition, location of replication-factor

topic --》多个(partition),每个
one partition has multiple replication-factor
                    one partition has a lead
the producer can connect to brokers
the consumer can connect to the zookeeper
the consumer can split group, and from which point receives the message(--from-beginning,)
Message can specify log.retention.hours .

二、 Installation
2.1  install zookeeper

 

2.2  install Kafka

 

三、 User it in C#