If I produce to a topic that does not exist, and the broker setting auto.create.topic.enable=true, what will happen?

An ecommerce website maintains two topics - a high volume "purchase" topic with 5 partitions and low volume "customer" topic with 3 partitions. You would like to do a stream-table join of these topics. How should you proceed?

To import data from external databases, I should use

What's is true about Kafka brokers and clients from version 0.10.2 onwards?

How do Kafka brokers ensure great performance between the producers and consumers? (select two)