Which producer property is not among the mandatory ones listed for producer configuration?

• A. bootstrap.servers
• B. key.serializer
• C. value.serializer
• D. acks

Answer: (D)

When configuring a Kafka producer, you need to tell it where to send data and how to turn your data into bytes. The essential settings are bootstrap.servers, which provides the addresses of the broker cluster, and the serializers for both the key and the value (key.serializer and value.serializer) so the producer can convert objects into bytes to transmit. These are the minimum requirements to create and use a producer.

The acks setting controls how many broker acknowledgments the producer waits for, which affects durability and latency, but it is optional. If you don’t set it, a default is used (usually waiting for the leader to acknowledge, i.e., acks=1). Therefore, acks is not among the mandatory properties.