Spring Kafka Synchronous Producer, Dec 29, 2025 · Apache Kafka is a distributed and fault-tolerant stream processing system. ms and min. 6 spring Kafka version: 2. Using Spring for Apache Kafka, developers can easily produce and publish messages to Kafka topics with minimal configuration. Why Communication Matters in Microservices In a microservice architecture, services need to communicate with each other to exchange data and orchestrate workflows. sync=true but when the Kafka is down, the Timeout Exception not occurring so the consumer waiting for ~2 . Properties appear in Jul 2, 2021 · i am using Spring stream @StreamListener to send message synchronously where the consumer will hit the Rest end point and the message will be posted to Kafka. batch. I can able to achieve the sync by using spring. Spring Kafka brings the simple and typical Spring template programming model with a KafkaTemplate and Message-driven POJOs via @KafkaListener annotation. Setting Up Kafka with Spring Boot Sep 25, 2024 · Explore how to create efficient, asynchronous Java microservices using Spring Boot and Kafka for scalable, real-time applications. To configure a Kafka producer in Confluent Platform, set the properties listed in the reference table below. Oct 25, 2024 · Kafka allows producers to send events and consumers to subscribe to them, making it ideal for asynchronous messaging in microservices. Aug 6, 2017 · This can be configured via the acks producer parameter. Mar 12, 2026 · Spring Boot provides seamless integration with Apache Kafka to build scalable event-driven applications. Dec 29, 2025 · In this tutorial, we’ll cover Spring support for Kafka and its abstraction level over native Kafka Java client APIs. Kafka Producer Configuration Reference for Confluent Platform Confluent Platform is a data-streaming platform that completes Apache Kafka® with advanced capabilities designed to help accelerate application development and connectivity for enterprise use cases. The following simple Spring Boot application provides an example of how to use the same template to send to different topics, each using a different value serializer. Both asynchronous and synchronous methods are provided, with the async methods returning a Future. cloud. 2. Sep 27, 2025 · When combined with Spring Boot, Kafka becomes a powerful solution for microservices communication, enabling scalability, decoupling and fault tolerance. When you send a message using a synchronous producer, your application waits for the Kafka broker to acknowledge the message's successful receipt and persistence before proceeding. 1 I wanted to check if the upgrade is causing any performance degradation On running a performance test at a total of 1500 TPS on both the old and new versions I have observed that the synchronous producer shows a 150ms + latency compared to the old version. producer. So is this syncrhonous because we are in a transactional context or should I wait for all ListenableFutures returned by the kafkaTemplate to end? I mean considering that I need to reply back to the caller in a synchronous way. Synchronous Producer: Guaranteed Delivery, Blocking Operations A synchronous Kafka producer, as the name suggests, operates in a blocking manner. What Is a Listener Container in Spring for Jun 22, 2022 · to Java 17 spring-boot version: 2. 6. The KafkaTemplate wraps a producer and provides convenience methods to send data to kafka topics. 4 kafka client version: 3. Summary of what you learned in this document: Oct 28, 2020 · The producer has an internal queue to buffer some records (based on the configurations linger. Congratulations! You have successfully implemented Producer/Consumer using Spring Kafka. 8. May 29, 2025 · It allows a producer to send a message and synchronously wait for a corresponding reply from a consumer, facilitating synchronous communication over Kafka’s asynchronous messaging system. You can set it to 0 to disable confirmations, or to a value higher than 1 to also confirm succesful replication to a quota. We walked through the necessary configurations and simulated a notification dispatch system. Mar 18, 2026 · In this article, we’ve explored using Apache Kafka to implement synchronous communication between two components in a Spring Boot application. There is an internal background thread that requests to the broker (where the leader partition is located) to send the batched data. size). Jun 22, 2022 · to Java 17 spring-boot version: 2. In this tutorial, we’ll cover Spring support for Kafka and its abstraction level over native Kafka Java client APIs. kafka. 0. Feb 4, 2021 · waits for the Producer to complete the send and then returns another ListenableFutre and this interface is asyncrhonous. default. stream. Code Example This section demonstrates how to set up a local Kafka environment using Docker and integrate it with a Spring Boot application.
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