---
title: "Discussion on \"Reactor + Kafka: why my send() hung for 60 seconds, and the one-line fix\" | Hashnode"
description: "Discussion on \"Reactor + Kafka: why my send() hung for 60 seconds, and the one-line fix\". My Kafka consumer stalled exactly 60 seconds with no error after calling send(). The cause was the Kafka client thread. The fix is publishOn."
url: "https://hashnode.com/posts/reactor-kafka-why-my-send-hung-for-60-seconds-and-the-one-line-fix/6af28628e60f5ef4ea2727bd"
---

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# [Reactor + Kafka: why my send() hung for 60 seconds, and the one-line fix](https://reviewgated.hashnode.dev/reactor-kafka-why-my-send-hung-for-60-seconds-and-the-one-line-fix?utm_source=hashnode&utm_medium=feed)

My Kafka consumer stalled exactly 60 seconds with no error after calling send(). The cause was the Kafka client thread. The fix is publishOn.

3d ago · 2 min read · reviewgated.hashnode.dev  
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-   [#kafka](https://hashnode.com/tag/kafka)
-   [#spring-boot](https://hashnode.com/tag/spring-boot)

## Written by

[Sangyoon Lee](https://hashnode.com/@globalmatchhub)

@globalmatchhub · Seoul, South Korea

  
[View profile](https://hashnode.com/@globalmatchhub)

Full-stack developer, 13 years. Open to remote contracts, async and written only.

Full-stack developer in South Korea (UTC+9), 13 years. I ship to review-gated marketplaces (JetBrains, VS Code, WordPress.org) and work fully in writing. CV: https://cv.namubase.com

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