Kafka's Messaging Guarantees
Explore Kafka's three messaging guarantees: at-most-once, at-least-once, and exactly-once semantics. Understand how each guarantee balances message delivery and duplication risks through producer and consumer behaviors. Gain insights into configuring Kafka for reliable messaging in distributed systems, ensuring practical knowledge of optimizing message delivery.
We'll cover the following...
Kafka can provide at-least-once, at-most-once and exactly-once messaging guarantees through different configurations. Let’s explore each one of them separately:
At-most-once semantics
At-most-once semantics is achieved on the producer side by disabling any retries. If the write fails (e.g., due to a TimeoutException), the producer will not retry the request. Moreover the message might or might not be delivered depending on whether it had reached ...