Kafka Producer Overview

This article provides a comprehensive overview of the Kafka producer, explaining why applications write messages to Kafka for use cases like auditing, metrics, logging, and asynchronous communication. It discusses diverse requirements such as message loss tolerance, duplication, latency, and throughput, using examples like credit card processing and website click tracking. The article details the producer API workflow: creating a ProducerRecord, serializing key/value objects, partitioning (with or without a specified partition), batching records, and sending them to Kafka brokers. It also describes broker responses, including successful writes returning RecordMetadata and failure handling.