Kafka Fundamentals — ScreeningA phone-screen-style rapid round on Kafka fundamentals. Answer from first principles — this is what a recruiter's technical screen feels like.

What is a Kafka partition?

Within a single consumer group, how many consumers can actively read from one partition at the same time?

A consumer group has 4 consumers subscribed to a topic with 3 partitions. What happens?

What does the consumer offset represent?

What is consumer lag?

What determines which partition a message with a key is written to?

Kafka guarantees message ordering...

What is the replication factor of a topic?