Which properties are mandatory to configure a Kafka producer?

• A. bootstrap.servers, key.serializer, value.serializer
• B. bootstrap.servers, key.serializer, retries
• C. bootstrap.servers, value.serializer, acks
• D. key.serializer, value.serializer, max.in.flight.requests.per.connection

Answer: (A)

Configuring a Kafka producer hinges on telling it how to connect and how to turn your data into bytes. The essentials are three properties: where to connect, and how to serialize both the key and the value of each message.

bootstrap.servers is the address list of the Kafka brokers to reach. Without this, the producer has nowhere to send data, so it can’t function.

key.serializer and value.serializer specify how to convert the key and the value into bytes for transmission. The producer needs these to turn your data into a form Kafka can store and transport; without them, it won’t know how to serialize the messages you want to send.

Other settings like retries, acks, or max.in.flight.requests.per.connection exist to tune behavior and reliability, but they are not required to create a producer. They have defaults and can be adjusted later as needed.