Message Order Guarantees With Apache Kafka Producers, partitions, and consumers each play a role in how Kafka guarantees message order.

Kafka Producers Data is sent to Kafka from producers. Producers are often applications that generate messages. And each message sent to Kafka will correlate with an assigned key.

Kafka Partitions Kafka stores messages within topics, and each topic has one or more partitions. A partition is a logical unit of parallelization of work across multiple Kafka instances. If there are three partitions, then three Kafka brokers can process data across three computers.

Kafka Consumers Messages are read by consumers from the partitions. Each partition can only be read by a single consumer, but a consumer can read from multiple partitions.

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