1.
Kafka uses ZooKeeper so you need to first start a ZooKeeper server if you don't already have one.
Kafka comes with a command line client that will take input from a file or from standard input and send it out as messages to the Kafka cluster.
The
broker.id property is the unique and permanent name of each node in the cluster. 2.
Kafka Streams is a client library for building mission-critical real-time applications and microservices, where the input and/or output data is stored in Kafka clusters.
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