6 docs tagged with "producer"

Kafka uses a hash of the message key to determine partition assignment. Understanding this mechanism is essential for ordering guarantees, avoiding hot partitions, and designing correct partition keys.

Without idempotence, network retries create duplicate messages on Kafka brokers. Enabling idempotence guarantees exactly-once delivery per producer session.

A **producer** is a client application that publishes (writes) messages to Kafka topics. It is responsible for:

Combined guide to Kafka producers and consumers — internal architecture, delivery semantics, serialization, offset management, error handling, and production patterns.

The `acks` configuration controls how many broker acknowledgements the producer requires before considering a send successful, trading off throughput, latency, and durability.

Idempotence protects against duplicates within a session, but it doesn't help when: