Kafka listenablefuture example. @Test public void can_publish_data_to_kafka.

Kafka listenablefuture example. springframework. Jun 26, 2024 · Learn to configure multiple consumers listening to different Kafka topics in a Spring boot application using Java-based bean configurations. java. OkHttpListenableFuture Apr 25, 2025 · Apache Kafka is one of the most powerful tools for building distributed applications. How can i achieve it. 1 Introduction This is the 5 minute tour to get started with Spring Kafka. SendResult. I saw this Will send (Topic, Key, Message) method of KafkaTemplate calls Partition method if I provide custom Partitioner? but I didn't get it fully. A flexible future which supports call chaining and other asynchronous programming patterns. ListenableFuture. I want to return the submit status back to the caller but seems like Java Jan 2, 2017 · Using Kafka With JUnit The Spring Kafka project provides a way to use Kafka in tests by providing an embedded version of Kafka that is easily set up and torn down. util. demo. 1 and, when the Kafka server is down/unreachable, the asynchronous send calls block for a time. Prerequisites: install and run Apache Kafka Then grab the spring-kafka JAR and all of its dependencies - the easiest way to do that is to declare a dependency in your build tool, e. ProducerService : Sent message=[ I am publishing a message! ] with offset=[ 0 ]. This guide is aimed at intermediate - to - advanced software engineers who want to gain a deeper understanding of Spring Kafka in modern projects. example. connect. 2 使用 KafkaTemplate 发送消息8. 1 Quick Tour for the Impatient 3. @Override public void sendMessage( With slightly more work, we can "fan-in," or trigger a ListenableFuture to get computed as soon as several other futures have all finished: see the implementation of Futures. 2. yml spring: kafka: consumer: enable-auto-commit: Jul 20, 2025 · Apache Kafka is a distributed streaming platform that has gained immense popularity for handling real - time data feeds. Apache Kafka is one of the most popular distributed streaming platforms that provides high - throughput, fault - tolerant, and scalable messaging capabilities. Non Blocking (Async) One moment, pleasePlease wait while your request is being verified Nov 8, 2019 · In my previous blog post I wrote about how Google Guava’s ListenableFuture is an improvement over Java 6’s Future class. It is essential that tests are reliable to ensure that nothing unexpected slips into your production environment. whenComplete(java. @Test public void can_publish_data_to_kafka Oct 19, 2020 · Testing A Kafka Event Producer With Spring Boot And JUnit 5 Part 2 19 October 2020 // Martin Holt In part 1 of this two part blog I introduced a pattern for integration testing a Spring Boot application that publishes events via Kafka. 0", forRemoval =true) void addCallback(ListenableFutureCallback <? super T > callback) Deprecated, for removal: This API element is subject to removal in a future version. 0. Used by Nov 27, 2019 · 本文探讨了Kafka生产者发送消息后的回调机制，指出回调中不会返回消息数据，但可以通过自定义Callback类来获取。在Spring Boot中，虽然Spring Kafka的SendResult包含了消息信息，但在失败回调中仅提供异常信息。通过分析源码，揭示了Spring如何在内部处理消息，并建议通过实现监听器来获取失败时的消息 Learn how KafkaTemplate from the Spring for Apache Kafka library works and how to use Spring to produce messages to Confluent Cloud. 3 使用 Kafka 发送消息8. for Maven: Dec 20, 2024 · kafka 异步发送ListenableFuture，首先说明一下,小白在学习这一块的时候,记得导入包的时候要看清包名,网上有一些博客没有具体导入的包名称,可能会导致在本机上导包后出现各种各样奇葩的强制类型转化. And when it comes to Spring Boot, the KafkaTemplate class is your go-to tool for producing messages to Kafka topics. Parameters: callback - the callback to register Parameters: callback - the Jul 5, 2025 · Kafka is a popular distributed streaming platform that enables high - throughput, fault - tolerant data processing. Kafka with Java Part 18: Kafka integration with mongo db • Kafka with Java Part 18: Kafka integr kafka messaging system kafka messaging service kafka messaging queue kafka messaging platform Nested Class Summary Nested classes/interfaces inherited from interface org. for Maven: Jun 4, 2022 · 8. This method allows you to register listeners that are called once the future completes. This is a good example of how Spring boot works with Kafka as a message broker. Extend Future with the capability to accept completion callbacks. send that returns a ListenableFuture. Combining Spring Boot with Kafka allows Aug 8, 2022 · Recently spring-kafka replaced use of ListenableFuture w/ CompletableFuture as it was removed from SF. x see here Spring Kafka Template before 3. Examples This section shows examples of sending messages to Kafka: Example 1. Jan 21, 2018 · So I was going through the Spring kafka documentation and came across Producer Listener. Is it possible with spring cloud stream to publis Apr 15, 2019 · 为了提高任务处理速度，我们经常会将一些可并行处理的步骤用异步的方式去处理，如果想要获取异步计算的结果，在Java 8之前更多的用的是Future + Callable的方式来实现，下面是使用Future和Callable的一个demo，其中的是executor. Everything works, but when the server is unavailable, the onFailure event is processed for a long ti Jul 11, 2023 · Kafka with Java Part 18: Kafka integration with mongo db • Kafka with Java Part 18: Kafka integr kafka messaging system kafka messaging service kafka messaging queue kafka messaging platform public class RequestReplyFuture<K, V, R> extends org. May 17, 2025 · Introduction Apache Kafka is designed for high availability, but failures still happen—network issues, broker crashes, or cluster downtime. 2, @KafkaListener (and @KafkaHandler) methods can be specified with asynchronous return types, letting the reply be sent asynchronously. KafkaOperationsSendReturnType Send operations used to return a ListenableFuture but as of 3. In order to support @SendTo, the listener container factory must be provided with a KafkaTemplate (in its replyTemplate property), which is used to send the reply. Feb 9, 2012 · With Java Configuration (No Spring Boot) Spring for Apache Kafka is designed to be used in a Spring Application Context. 2 KafkaTemplate#send returns a CompletableFuture, not ListenableFuture This line is incorrect. Configuration Management: Use environment - specific configuration files to manage different Kafka configurations for development, testing, and production. If the functionality we want to test is nicely encapsulated we can do that using a unit test. In part 2 I will discuss what happens when the test suite grows, look in depth at the Kafka Consumer, and offer one solution for how to reduce long execution How to unit test Kafka producer code using the mock implementation of Kafka Producer interface called MockProducer. properties引入的。对集群链接的一些属性进行配置。 May 31, 2020 · Apache Avro — Quick Example in Kafka In this post, we will attempt to establish a Kafka Producer to utilize Avro Serializer, and the Kafka Consumer to subscribe to the Topic and use Avro … Mar 26, 2018 · I'm trying to implement an asynchronous REST method of sending a message to Kafka in Spring MVC. Simple Usage Jun 16, 2014 · Luckily it's easy to convert to CompletableFutures and back. ListenableFuture 和 CompletableFuture 构建在 Java 的 Future 接口之上。前者是 Google Guava 库的一部分，而后者是 Java 8 的一部分。 我们知道， Future 接口不提供回调功能 A flexible future which supports call chaining and other asynchronous programming patterns. 3. submit ()… Jul 20, 2025 · In this blog post, we will explore the core concepts of Spring Kafka, provide a typical usage example, discuss common practices, and share best practices related to the latest Spring Kafka projects. KafkaOperations KafkaOperations. clients. Whether you’re building microservices, streaming systems, or real-time applications, Kafka acts as a reliable and scalable messaging backbone. In this blog post, we will Aug 6, 2018 · the problem with wrong import class as there are two classes JsonDeserializer: import org. Feb 23, 2024 · The documentation could simply be out of date, and show Spring 2. Hence, we need to migrate to CompletableFuture. Required libraries Groovy Kotlin Mar 26, 2025 · To fully decouple request processing, combine CompletableFuture for async tasks and Kafka for event-driven communication. This is the most direct way to ensure that each message is sent. 0 org. Jan 21, 2022 · Retry request So we can immediately see the benefits of retries in a simple example. If the future has completed when the callback is added, the callback is triggered immediately. UpgradeSpringKafka_3_0 Migrate applications to the latest Spring Kafka 3. We provide a "template" as a high-level abstraction for sending messages. kafka的相关内容与概念在这里就不再赘述了,咱们直接通过一个小案例来感受一下kafka的魅力,本篇博客 May 22, 2019 · I am trying to write the unit test case for ListenableFuture adding Callback but I am not sure how to do it. google. 0, in favor of CompletableFuture. 1. c. Let's take Spring 4 ListenableFuture s as an example. The code is something like this: Sep 30, 2024 · What Is ListenableFuture? ListenableFuture comes from Google’s Guava library, and in Spring Boot, it’s available via the org. This consists of a topic name to which the record is being sent, an optional partition number, and an optional key and value. x. xml<?xml version="1. https:// Jul 28, 2025 · Apache Kafka is a distributed streaming platform that has gained immense popularity for building real - time data pipelines and streaming applications. Apache Kafka, a distributed streaming platform, is widely used for building real - time data pipelines and streaming applications. Adjust the usage to use CompletableFuture instead. This class provides various ways of interacting with ListenableFuture, among which is the support for adding success/failure callbacks and allowing us to coordinate multiple futures with aggregations or transformations. 8版本中马上也提供了类似这样的类，就是CompletableFuture。 ListenableFuture 3 days ago · Kafka producers provide the ability to send asynchronously through ListenableFuture and allow us to register a callback function to handle the sending result. Spring Boot, on the other hand, is a powerful framework that simplifies the development of Java applications. 0 return a CompletableFuture. This guide covers: Kafka’s built-in retries (retries, retry. JHipster, on the other hand, is a widely used open - source application Jul 7, 2024 · ListenableFuture 鉴于本文前面已经分析了 Future 实现的基本思想，同时 Guava 提供了 详细文档 说明，下面仅总结 ListenableFuture 的某些关键实现： 遵循替换原则，子类（子接口）不改变父类（父接口）语义，ListenableFuture 拓展了 Future 接口，支持回调。 Feb 9, 2013 · With Java Configuration (No Spring Boot) Spring for Apache Kafka is designed to be used in a Spring Application Context. May 20, 2020 · I have a simple custom partitioner class and I also wanna send to kafka server like KafkaTemplate (TOPIC,key,message) where in producerConfig I set my customPartitioner class for partitioning. The `ListenableFuture` interface in Kafka provides a powerful way to manage and react to the results of asynchronous operations. Callback in Starting with version 3. If converting whenComplete(BiConsumer) or thenApply(BaseFunction) to CompletableFuture. Yet another example of the not-very-well-thought-out garbage that we've come to expect from Oracle. It seems to be the TCP timeout. consumer. Jan 12, 2020 · 而ListenableFuture和CompletableFuture对于这种情况则是提供了很多易用的API。 如果说按照先后顺序来讲的话，首先是ListenableFuture，这是由Google Guava工具包提供的Future扩展类，随后，JDK在1. Spring Boot provides a convenient way to integrate with Kafka The Spring for Apache Kafka project applies core Spring concepts to the development of Kafka-based messaging solutions. ms Oct 29, 2022 · In this article, you will learn how to use Kafka transactions with the Spring Kafka project in your Spring Boot app. Learn how to integrate Apache Kafka with Spring Boot. See full list on baeldung. x see here We can clearly see that the ListenableFuture is changed to CompletableFuture. Preparation for test Apr 24, 2019 · For a better understanding of the CompletionStage API, let's look at 20 examples of CompletableFuture in action, both synchronously and asynchronously. openrewrite. A complete collection of demos and examples for Apache Kafka, Kafka Streams, Confluent, and other real-time data streaming technologies. com Jun 11, 2018 · In other words ListenableFuture is a well thought out clean interface, while CompletableFuture (and the CompletionStage interface since it exposes toCompletableFuture) is dangerous because it exposes complete methods. A Apr 19, 2024 · ListenableFuture and CompletableFuture are built on top of Java’s Future interface. ListenableFuture and CompletableFuture both fill this gap. Explore setup, producer-consumer architecture, configuration, security, and best practices for scalable event-driven applications. You can find the complete code and implementation in the Here is a simple example of using the producer to send records with strings containing sequential numbers as the key/value pairs. backoff. Type Parameters: T - the result type returned by this Future's get method All Implemented Interfaces: java. For internal usages, we could retain it or phase it out completely. When using Spring Boot, it will auto-configure the template into the factory; when configuring your own Nov 2, 2021 · With Java Configuration (No Spring Boot) Spring for Apache Kafka is designed to be used in a Spring Application Context. Recipe source GitHub, Issue Tracker, Maven Central This recipe is available under the Moderne Source Available License. JsonDeserializer; import org. kafka. The following examples show how to use org. I show you how to write a test for producers and consumers and how to use docker-compose for configuring Kafka in your dev environment … Mar 15, 2023 · I would like to poll an HTTP endpoint for a request/reply scenario, where the controller makes a request over Apache Kafka to a service that returns a reply, but I don't want to block in the controller waiting for the reply; I wish to poll the endpoint periodically to get the reply. common. Albeit they do not directly get the result, you may get it using the get method of the ListenableFuture itself. In this series I want to highlight different pieces of Guava that I have found Migrate to Spring Kafka 3. The former is part of Google’s Guava library, whereas the latter is part of Java 8. 0 release. Didn`t get anything useful on internet. 1k次。原文网址：其他网址spring-boot 2. Mar 18, 2023 · Kafka with Java Part 18: Kafka integration with mongo db • Kafka with Java Part 18: Kafka integr kafka messaging system kafka messaging service kafka messaging queue kafka messaging platform The Spring for Apache Kafka project applies core Spring concepts to the development of Kafka-based messaging solutions. send(TOPIC, key, value); Refer JavaDoc and Spring Docs specific to the client version you are using, rather than from external sources . One of the key challenges in building reliable applications with Kafka is ensuring exactly - once semantics. g. Nov 21, 2022 · With Java Configuration (No Spring Boot) Spring for Apache Kafka is designed to be used in a Spring Application Context. We need to act accordingly in the kafka binders. A. Apr 10, 2020 · I asked a question a few days ago regarding stubbing the future response from the kafka. Jul 20, 2025 · Combining Kafka with Spring Boot allows developers to build powerful, event-driven applications with ease. declaration: package: org. this was answered and explained correctly by @kriegaex here Though I faced another issue, on h Oct 31, 2018 · 本文深入解析ListenableFuture在Google Guava框架中的应用，对比FutureTask，重点介绍了如何使用ListenableFuture进行异步任务处理，包括任务提交、回调函数设置及执行原理。 The Spring for Apache Kafka project applies core Spring concepts to the development of Kafka-based messaging solutions. Jul 9, 2025 · In the world of microservices and distributed systems, messaging queues play a crucial role in enabling asynchronous communication between different components. All the configuration of Kafka is on the application. Contribute to Snailclimb/springboot-kafka development by creating an account on GitHub. How to convert it to CompletableFuture? This part of the reference documentation details the various components that comprise Spring for Apache Kafka. This should be a KafkaTemplate and not a ReplyingKafkaTemplate which is used on the client-side for request/reply processing. 3k次。ListenableFuture是Spring框架对JavaFuture的增强，允许添加回调函数，在任务完成后执行。文章介绍了如何通过ListenableFutureTask提交到线程池以及使用Spring的AsyncListenableTaskExecutor，还提到了在简单场景下ListenableFuture的易读性，但在更多复杂需求时推荐使用功能更强大的CompletableFuture。 Apr 28, 2020 · I have the List of ListenAbleFuture. addCallback @Deprecated (since ="6. allAsList for an example. OperationsCallback <K, V, T In the example, the get () method is directly chained after executing the send () method to block waiting for Kafka's response until the message is sent successfully or an exception occurs. Feb 6, 2024 · As you can see in the versions spring-kafka versions on the github the ListenableFuture is changed to CompletableFuture. as of 6. x 整合kafka_鸭鸭的博客-CSDN博客Springboot与Kafka整合-yellowcong_yelllowcong的专栏-CSDN博客kafka系列之springboot集成示例_犀牛饲养员-CSDN博客简介版本SpringBoot与kafka版本对应关系：Spring for Apache Kafka实例依赖及配置pom. Kafka helps us with that by providing a mock implementation of Producer<> interface called, you guessed it, MockProducer. Aug 24, 2021 · ListenableFuture ListenableFuture is a simple interface in Guava that implements Future and only adds one method: addListener. Dec 1, 2016 · This would start up a Kafka Cluster with 2 brokers, with a topic called “messages” using 2 partitions and the class rule would make sure that a Kafka cluster is spun up before the tests are run and then shutdown at the end of it. BiConsumer) or CompletableFuture. For example, if you create the listener container yourself outside of a Spring context, not all functions will work unless you satisfy all of the … Aware interfaces that the container implements. The Kafka Template is a utility provided by Spring for interacting with Apache Kafka in a more convenient and structured way. Asynchronous Kafka Message Processing with CompletableFuture Jan 25, 2023 · KAFKA ListenableFuture spring- how to return client a response with object based on onsuccess method future. org. SettableListenableFuture<org. ListenableFuture and CompletableFuture are built on top of Java’s Future interface. kafka学习！. Tags spring kafka Recipe source GitHub, Issue Tracker, Maven Central Jul 22, 2020 · Learn how to integrate Apache Kafka with Spring Boot for sending and receiving messages efficiently in your applications. In this article, I’ll show you how to configure both standard and concurrent Spring Kafka Listeners and provide insights on when to prefer which Kafka Listener, so you can leverage the full potential of this powerful duo. Standard Kafka Listener The Standard Kafka Apr 26, 2021 · As best practice, it is recommendable to have specific setXXX methods to pass the instances, for example in your case, in PlaceService class you should have something like this: public void setListenableFuture(ListenableFuture listenableFuture) { this. Jul 22, 2025 · 文章浏览阅读6. To ensure message delivery, applications must implement retry mechanisms. work:work-runtime-ktx provides wrappers for WorkManager APIs as suspend functions. apache. concurrent package. Understanding these concepts is crucial for modern Java development, especially when building scalable and Aug 13, 2019 · I have a method for sending kafka message like this: @Async public void sendMessage (String topicName, Message message) { ListenableFuture<SendResult<String, Message >> future = Oct 10, 2024 · 文章浏览阅读1. Jul 20, 2025 · Spring Kafka provides ListenableFuture for asynchronous message sending. Inspired by com. But Java 8 ships with a CompletableFuture class that brings much of the Jul 16, 2025 · Tip: Check if the Jetpack library you're using has a -ktx artifact, as these often contain built-in wrappers for ListenableFuture -based methods. Apache Kafka is an open-source distributed event streaming platform used by thousands of companies for high-performance data pipelines, streaming analytics, data integration, and mission-critical applications. Feb 23, 2020 · 其中$ {xxxx}是从配置文件kafka. Feb 13, 2023 · 消费者使用@KafkaListener监听topic，并通过Acknowledgment手动提交偏移量。 生产者则使用KafkaTemplate的CompletableFuture发送消息，替代了SpringBoot2中的ListenableFuture。 文章强调了SpringBoot3中ListenableFuture的过时以及Kafka集成的成熟度。 Dec 30, 2024 · 本文详细介绍了ListenableFuture和Kafka的AddCallback的应用，通过实例展示了如何在异步任务完成后将结果发送到Kafka，提升系统性能。 In this tutorial, we'll delve into the world of Java callbacks, particularly focusing on two powerful classes: ListenableFuture and CompletableFuture. Mar 5, 2021 · The last articles gave a couple of examples on how to write Kafka-enabled integration tests at various levels of abstraction using Kafka for JUnit. It provides high - throughput, low - latency, and fault - tolerant capabilities, making it an ideal choice for building event - driven architectures. reactive (non-blocking) Kafka producers. With Java Configuration (No Spring Boot) Spring for Apache Kafka is designed to be used in a Spring Application Context. Spring Boot, on the other hand, simplifies the development of Java applications by providing a pre - configured environment. ConsumerRecord<K, R>> With Java Configuration (No Spring Boot) Spring for Apache Kafka is designed to be used in a Spring Application Context. For example, androidx. Mar 28, 2023 · 1. Spring Boot, on the other hand, simplifies the development of Java applications by providing a pre - configured set of tools Jun 11, 2014 · Let’s take Spring 4 ListenableFuture s as an example. Spring Kafka Template after 3. whenComplete (BiConsumer) Register the given ListenableFutureCallback. How to convert it to CompletableFuture? static CompletableFuture buildCompletableFutureFromListenableFuture( final ListenableFuture listenableFuture ) { //create an instance of CompletableFuture CompletableFuture completable = new CompletableFuture () { @Override 3. However, retries behave differently in traditional (blocking) vs. thenApply(java. Sep 23, 2016 · Getting Apache Kafka to work with Spring smoothly will be a very good thing for many Java developers. It will producer with message with ansyc configuration like corePoolSize, maxPoolSize, queueSize as configurable. A key/value pair to be sent to Kafka. support. kafka May 26, 2017 · I have a Spring Cloud microservice that posts message on a Kafka broker, this microservice is accessible thru a REST api. core, class: KafkaTemplate Oct 25, 2023 · In this article, we will explain how to implement Unit Tests in two Spring Boot Kafka applications: News Producer and News Consumer. When we combine Spring Cloud Sleuth with Kafka, we can trace messages as they are produced and consumed in a Kafka - based microservices ecosystem. Futures to make it easier to work with their ListenableFuture. Exactly - once semantics guarantee that each message is processed exactly once, even in the face of failures. I want to wait of this List of ListenableFuture&lt;SendResult&lt;Integer, String&gt;&gt; for atmost 15 minutes if they have not comepleted. We also provide support for Message-driven POJOs. In this project, I also use MongoDB and Docker. concurrent. The Spring for Apache Kafka project applies core Spring concepts to the development of Kafka-based messaging solutions. 1 设置 Spring 的 Kafka8. Jul 7, 2022 · I'm wondering a way to perform a callback using StreamBridge, I want to do something similar to KafkaTemplate. Explore the key differences between using a Producer Listener with KafkaTemplate and callbacks with ListenableFuture in Spring Kafka. Mar 30, 2020 · This article is about spring boot and apache kafka integration with sample consumer and producer example. In this Spring Kafka tutorial, we will get to know about Spring Kafka, the Spring for Kafka, how to use KafkaTemplate to produce messages to Kafka brokers, and how to use “listener container” to consume messages from Kafka as well. The main chapter covers the core classes to develop a Kafka application with Spring. We provide a “template” as a high-level abstraction for sending messages. addCallback as onsuccess is void Aug 30, 2020 · The Guava library, for me, is hands down the best Java utility library out there. Sep 28, 2016 · ListenableFuture顾名思义就是可以监听的Future，它是对java原生Future的扩展增强。我们知道Future表示一个异步计算任务，当任务完成时可以得到计算结果。如果我们希望一旦计算完成就拿到结果展示给用户或者做另外的计算，就必须使用另一个线程不断的查询计算状态。这样做，代 We would like to show you a description here but the site won’t allow us. ListenableFuture<SendResult<String, String>> future = kafkaTemplate. Jul 7, 2025 · In modern software development, real - time data processing is becoming increasingly important. Swift execution is also desirable to provide timely feedback to developers. json. Future<T>, ListenableFuture <T> Direct Known Subclasses: OkHttp3AsyncClientHttpRequest. here's the code snippet of the code im trying to test. send() method. The API for this class is still evolving and we may break compatibility in minor releases, if necessary. Jan 11, 2023 · Kafka Message producer with @Async. Jun 16, 2023 · Before we start, If you want to learn the basic components and concepts of Kafka, How to achieve the desired performance and message guarantee level, please visit my previous article: Get Kafka in Jan 23, 2025 · 深入理解 Future, CompletableFuture, ListenableFuture，回调机制 本文禁止转载。 本文从设计思想、具体实现等角度分析了 Future、CompletableFuture、ListenableFuture等接口或类，提出了一些最佳实践，精华内容为示例代码。 Jul 19, 2022 · Spring is planning on deprecating ListenableFuture in 6. 简介 相比Future（【并发编程】Java5 - Future，基本使用），Guava提供的ListenableFuture支持不阻塞主线程进行任务执行完成后的业务处理。 使用Future的实现类FutureTask想要实现一旦获取到结果立即执行后续的业务，就需要阻塞主线程等待结果或者使用其 Feb 8, 2011 · With Java Configuration (No Spring Boot) Spring for Apache Kafka is designed to be used in a Spring Application Context. Example #1 Jan 30, 2022 · Spring Kafka - Publish messages to Topic & Consume messages from topic Spring Kafka project provides an abstraction layer on core apache Kafka libraries. This will eventually become a thin shim on top of Java 8's CompletableFuture. If you’re not already using it in your Java projects – you absolutely should be! Check out the wiki here to get started. Jun 11, 2018 · In other words ListenableFuture is a well thought out clean interface, while CompletableFuture (and the CompletionStage interface since it exposes toCompletableFuture) is dangerous because it exposes complete methods. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. The code is something like this: Dec 22, 2021 · Guava provides us with the convenience class com. Jul 13, 2017 · I'm using Spring-Kafka version 1. When working with Kafka, developers often need to handle asynchronous operations efficiently. In this tutorial, we’ll learn callback mechanisms using both of them. send() but its not working as expected. function. 0" encoding="UT_升级完spring Apr 11, 2023 · Sometimes your Kafka producer code is doing things that need to be properly validated and of course, we developers resort to writing a test. But with an event-driven architecture where service B receives events from the message queue as Kafka then Apache Kafka More than 80% of all Fortune 100 companies trust, and use Kafka. 3 编写 Kafka 监听器 《Spring 实战》第五版中文版。在与 Spring 工作了近 15 年后，已经编写了这本书的 5 个版本（更不用说《Spring Boot 实战》了），你可能会认为，在为这本书撰写序言时，很难想出一些有关 Spring 的令 Jul 7, 2020 · If you used ListenableFuture, you will also see the following message if the call is successful. support, class: SendResult declaration: package: org. Testing Jul 21, 2025 · This blog post aims to provide an in - depth understanding of using `spring-boot-starter-amqp` with Kafka, covering core concepts, typical usage examples, common practices, and best practices. 3. util Apr 8, 2020 · I'm trying to unit test the callbacks from the kafkaTemplate. In this blog post, we will explore the core concepts of Kafka and Spring Boot integration, provide a typical usage example, discuss common practices, and highlight best practices. Dec 7, 2021 · For application facing APIs, we can provide CompletionStage alternatives. Jul 2, 2025 · In the world of distributed systems and big data, Apache Kafka has emerged as a leading platform for building real - time data pipelines and streaming applications. This is what the Spring Kafka Documentation says- "Optionally, you can configure the KafkaTemplate with a I have a spring boot application that uses a Kafka consumer and producer. return types include CompletableFuture<?>, Mono<?> and Kotlin suspend functions. Relation to CompletionStage It is possible to obtain a CompletionStage from a KafkaFuture instance by calling toCompletionStage(). Apr 27, 2024 · When it comes to building an event-driven architecture, Apache Kafka and Spring Boot are the unbeatable combination you need. service. As we know, the Future interface doesn’t provide callback functionality. x code, while you are using 3. spring. We have discussed about KafkaTemplate, @KafkaListener and @SendTo provided by spring boot. Oct 15, 2020 · Testing A Kafka Event Producer With Spring Boot And JUnit 5 Part 1 15 October 2020 // Martin Holt A successful continuous delivery (CD) pipeline requires a high level of automated testing. For component-tests, we kept the scenarios quite simple and built a minimal producer and consumer on top of the official kafka-clients library for Java. core. Jul 20, 2025 · Kafka is a popular distributed streaming platform that allows you to publish and subscribe to streams of records. It simplifies the process of producing and consuming messages in Kafka by abstracting away many of the low - level details. listenableFuture = listenableFuture; } The Spring for Apache Kafka project applies core Spring concepts to the development of Kafka-based messaging solutions. It is a shining example of clean code and API design, both in its implementation and documentation. In this complete guide, you’ll learn how to Apr 24, 2024 · Producers and consumers are used by Apache Kafka, a distributed event streaming platform, to process Tagged with java, springboot, kafka, errors. 2. spring-projects/spring-framework#27780 Add methods that use CompletableFuture to the templates and kafka学习！. You may check out the related API usage on the sidebar. Baeldung, a well - known resource for Java developers, offers in - depth tutorials and guides on integrating Kafka with Spring Boot Jul 19, 2025 · Kafka, on the other hand, is a popular distributed streaming platform used for building real - time data pipelines and streaming applications. Both are fundamental in handling asynchronous programming in Java, allowing for efficient task execution without blocking threads. pqmkb jbjydj zpurl okrnqxw aepqoih udsfot kuuxyn dyjh ukiy msudkik