Udemy's course code
Start Zookeeper first
$ zookeeper-server-start.sh zookeeper.properties
$ kafka-server-start.sh server.properties
$ kafka-topics.sh --zookeeper 127.0.0.1:2181 --topic twitter_tweets --create --partitions 3 --replication-factor 1
$ kafka-console-producer.sh --broker-list 127.0.0.1:9092 --topic twitter_tweets
Read from the beginning.
$ kafka-console-consumer.sh --bootstrap-seer 127.0.0.1:9092 --topic twitter_tweets --from-beginning