--- title: Effect of Idempotence on the Performance of a Kafka Producer description: Idempotence in Kafka producers prevents duplicate records during retries by using protocol-level deduplication with producer IDs and sequence numbers. Enabled... canonical: https://daily.dev/posts/effect-of-idempotence-on-the-performance-of-a-kafka-producer-faduyw8pu twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Effect of Idempotence on the Performance of a Kafka Producer | daily.dev og:description: Idempotence in Kafka producers prevents duplicate records during retries by using protocol-level deduplication with producer IDs and sequence numbers. Enabled... og:url: https://daily.dev/posts/effect-of-idempotence-on-the-performance-of-a-kafka-producer-faduyw8pu og:image: https://api.daily.dev/og/posts/FaduyW8pU.png og:image:alt: Effect of Idempotence on the Performance of a Kafka Producer og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Effect of Idempotence on the Performance of a Kafka Producer **[Baeldung](https://daily.dev/sources/baeldung)** · 8 min read · 6 upvotes · 0 comments ## Summary Idempotence in Kafka producers prevents duplicate records during retries by using protocol-level deduplication with producer IDs and sequence numbers. Enabled by default since Kafka 3.0, it requires specific configurations (acks=all, retries>0, max.in.flight.requests≤5) to function properly. JMH benchmarks comparing idempotent and non-idempotent producers show negligible performance differences in both single-broker and three-broker replicated clusters, with throughput around 24,000 records/second in both cases. The results demonstrate that idempotence provides strong delivery guarantees without significant throughput penalties, making it safe to keep enabled in most scenarios unless absolute maximum throughput is critical and duplicates are acceptable. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Idempotency Is Easy Until the Second Request Is Different](https://daily.dev/posts/idempotency-is-easy-until-the-second-request-is-different-skbwedvu3) · Hacker News · 0 upvotes · 0 comments - [From HTTP Retries to Kafka Redelivery: Building End-to-End Idempotency with FastAPI](https://daily.dev/posts/from-http-retries-to-kafka-redelivery-building-end-to-end-idempotency-with-fastapi-m2qkobimp) · Medium · 0 upvotes · 0 comments - [The Idempotent Consumer Pattern in .NET \(And Why You Need It\)](https://daily.dev/posts/the-idempotent-consumer-pattern-in-net-and-why-you-need-it--7cs6q6lwd) · Milan Jovanović · 6 upvotes · 1 comments - [How to Stop Charging Customers Twice: A Practical Idempotency Guide](https://daily.dev/posts/how-to-stop-charging-customers-twice-a-practical-idempotency-guide-m6qetcboi) · The T-Shaped Dev · 0 upvotes · 1 comments --- Tags: [#performance](https://daily.dev/tags/performance), [#java](https://daily.dev/tags/java), [#kafka](https://daily.dev/tags/kafka), [#distributed-systems](https://daily.dev/tags/distributed-systems) [View this post on daily.dev](https://daily.dev/posts/effect-of-idempotence-on-the-performance-of-a-kafka-producer-faduyw8pu) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Effect of Idempotence on the Performance of a Kafka Producer","url":"https://daily.dev/posts/effect-of-idempotence-on-the-performance-of-a-kafka-producer-faduyw8pu","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/effect-of-idempotence-on-the-performance-of-a-kafka-producer-faduyw8pu"},"datePublished":"2026-01-26T01:30:23.102Z","dateModified":"2026-01-26T01:31:11.196Z","description":"Idempotence in Kafka producers prevents duplicate records during retries by using protocol-level deduplication with producer IDs and sequence numbers. 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