intermediateProducer Reliability & Errors
Why can naive automatic retries on a Kafka producer introduce message duplication, and how does Kafka's idempotent producer fix it?
If a send succeeds on the broker side but the acknowledgment is lost in transit, a naive retry resends the same logical message, creating a duplicate on the broker. The idempotent producer (`enable.idempotence=true`) tags each message with a sequence number per producer session, letting the broker detect and silently drop an exact duplicate retry instead of writing it twice.
Ready to master this question?
Generate a complete walkthrough — background, the full answer in plain language, a working code example explained line by line, a real-world scenario, common mistakes, and how this same question gets asked in different ways.
Sign in to generate a response