Apache Kafka Practice Exam 2026 – The Complete All-in-One Guide for Exam Success!

The acknowledgment mode defined as acks = 0 is recognized as the fastest option in Apache Kafka. When this mode is set, the producer sends messages to the broker without waiting for any acknowledgment from the broker. This means that as soon as the message is sent, the producer can proceed to send the next message without delay, allowing for high throughput and lower latency in message production.

However, the trade-off with acks = 0 is that the producer does not receive any confirmation that the message was successfully received or stored by the broker. This can lead to data loss if a failure occurs before the messages are fully processed. Therefore, while it provides speed, it sacrifices reliability in message delivery.

In contrast, the other acknowledgment modes, such as acks = 1 or acks = all, involve waiting for confirmation from the broker, which ensures greater reliability in message delivery but at the cost of increased latency and reduced throughput. With acks = 1, the producer waits for the leader broker to acknowledge receipt of the message, and with acks = all, it waits for all replicas to acknowledge, making these modes slower than acks = 0 due to the added round-trip time for confirmations. Configurable acknowledgment modes depend on various settings