Kafka producer multi thread. If it is not possible to make your listener thread-safe or adding synchronization would significantly reduce the benefit of adding concurrency, you can use one of a few techniques: Although each consumer is single-threaded, the processing of records can leverage multiple threads. 13-4. However, using Spring Kafka, if I can easily define multiple threads within a single WAR and deploy this WAR to multiple instances, then I am optimizing my existing solution. In simpler words, Kafka message/record is processed by only one consumer process per consumer group. I was reading the Kafka page, the new Producer API is thread-safe and sharing single instance will improve the performance. By regularly removing unnecessary images, you can save disk space and improve system performance. I want to use the Transactional feature of Kafka consumer and producer in the project. What is the best way to implement a multi-threaded Kafka producer in Java? Should I create a fixed-size thread pool and submit sendMessage tasks, or is there a more Kafka-friendly approach? Conclusion Effective Docker image management is crucial for maintaining an efficient and organized development environment. 8. Thread per consumer model. Producer Latency Increase – Troubleshooting in 7 Points 1️⃣ Check Producer Metrics Analyze request latency, retry rate, batch size, and buffer availability to identify where delays originate. A naive approach might be to process each message in a separate thread taken from a thread pool, while using automatic In this article, we’ll explore how Kafka can seamlessly integrate with multi-threaded applications, enabling parallel processing, fault tolerance, and high scalability. Kafka Producer for Confluent Platform An Apache Kafka® Producer is a client application that publishes (writes) events to a Kafka cluster. In the multi-threaded consumer mode, a single thread connects to Kafka and may get data from multiple / single partition (s). This is why the single-threaded model is commonly used. Multi-threaded access must be properly synchronized, which can be tricky. Now the producer needs to make sure the events are added to the Kafka topic in the same way the History table has logged In. The most common approach is to assign each Kafka partition to a separate thread. Your suggestion actually hints toward the second solution. Kafka Producer Design Apache Kafka® is an open-source distributed streaming system used for stream processing, real-time data pipelines, and data integration at scale. Contribute to howtoprogram/Kafka-MultiThread-Java-Example development by creating an account on GitHub. 0. Each thread instantiates one producer. My doubt is: have we mutiple consumer istance with single-thread or one consumer with many threads? A consumer group refers to a set of consumers or a one multi-thread consumer?. This producer will read the History table to find which table and which row to pick and then that row will be added Kafka topic. I have created sample kafka sync producer and consumergroup programs using kafka_2. We will explore a multi-threaded consumer model. That is the recommended way of scaling up. 2 I am newbie to kafka. info("Producer This post describes how to configure Multiple Kafka Producer in Spring Boot application from a property file having different configurations such as Kafka cluster, topic, etc. In multi-threaded web environment, every thread must wait for the messages not only from its own but all the messages other threads already sent. This design choice simplifies the architecture of applications that require concurrent message production, as it eliminates the need for complex synchronization mechanisms. 8 and later, Confluent Cloud and Confluent Platform. What happens now is assuming you have 10 partitions of a topic, each partition will be submitted to its own thread and it will be processed concurrently. The producer consists of a RecordAccumulator which holds records that haven’t yet been transmitted to the server, and a Sender background I/O thread Overall, the use of multi-threaded consumers has proven to be a valuable strategy for improving the efficiency and scalability of our Kafka-based event processing systems. This section gives an overview of the Kafka producer and an introduction to the configuration settings for tuning. Listeners, therefore, need to be thread-safe, and it is preferable to use stateless listeners. Explore the threading models and concurrency strategies in Apache Kafka, focusing on optimizing performance and ensuring thread safety in producers and consumers. I'm just thinking, is there any way that python multithreading will help us in writing the efficient kafka producer A high throughput multi-threaded ordered Kafka consumer When events are being consumed from a Kafka topic which has multiple partitions and high volume of generated events, the slow speed of … How multi threaded Kafka Producer will work when u have single source of streaming data? You might want to use some sort of intermediate state to track the primary keys of your events which are successfully stored in kafkastream. The jist of this approach is as follows: Apache Kafka is a distributed streaming platform that has become a cornerstone in modern data processing architectures. How can I use Spring boot for developing a multi-thread consumer and producer? There are many ways to design multi-threaded models for a Kafka consumer. 1. Currently I'm sending to a single topic, but in the future I might need to send messages to multiple topics. In this tutorial, learn how to optimize a Kafka producer for throughput, with step-by-step instructions and supporting code. Kafka’s behavior using Multiple threads Core Java implementation of a Kafka Producer-Consumer system using a queue (BlockingQueue) instead of Kafka itself. 11 Kafka consumers could be either multi process or multi threading (make sure the client library used correctly supports Kafka Consumer Group, required in early version of Kafka), the choice is up to you. Ensure that you understand each command and its implications before executing them, especially when using force deletion or pruning all resources. 2. All code samples I see seem to support a single producer, reading config from app during app startup. When using a concurrent message listener container, a single listener instance is invoked on all consumer threads. The run-method of my thread looks like this: @Override public void run() { logger. The kafka broker assigns the partitions whose messages will be delivered to these threads. The Kafka producer is conceptually much simpler than the consumer since it does not need group coordination. Conceptually you can think of a consumer group as being a single logical subscriber that happens to be made up of multiple processes. Think of a Kafka producer as a high-speed postal service that never sleeps. This topic provides Kafka and Confluent Platform producer configuration parameters. So if you want multiple consumers to process the message/record you can use different groups for the consumers. Learn about thread safety, sharing producer instances, and best practices for error handling in multi-threaded environments. This topic describes how Kafka producers are designed to enable load balancing and asynchronous send operations. The Kafka producer is designed to be thread-safe, allowing multiple threads to share a single producer instance. Multi-threaded Application With Simple Apache Kafka Consumers With code examples in Kotlin The first time any new-to-Kafka engineer tries to do anything more complex than a simple read-quick … Create Multi-threaded Apache Kafka Consumer. The Kafka producer instance is shared between the main thread and the worker thread reading the Excel file. When done correctly, it reduces the overhead of creating multiple producer instances and allows for more efficient message production. One of the key aspects of using Kafka effectively is understanding how to achieve parallelism in Kafka producers. 2-0. May 9, 2019 · Can anyone help me in implementing the threads in my Kafka producer program? My Producer will be producing over a million records & so I want to implement threads for the same. It will help you fill those batches quicker while keeping your messages in order. One th Kafka Producer Configuration Reference for Confluent Platform Confluent Platform is a data-streaming platform that completes Kafka with advanced capabilities designed to help accelerate application development and connectivity for enterprise use cases. The default Kafka consumer is only single-threaded, so it can only process records sequentially, with committing done automatically upon successful record processing. We will analyze how to achieve it with Spring Boot and Spring for Kafka. Producer parallelism refers to the ability to send messages to Kafka topics from multiple threads or processes simultaneously, which can significantly improve the Need more context on both your code and the question, but to produce events in parallel, you need multiple threads to produce messages. 2️⃣ Abstract This paper examines multi-threaded Kafka producer applications, and how the per-formance of such applications is afected by how the number of producer instances relates to the number of executing threads. New requests are queued to one of the multiple queues in an event server instance, which is then processed by multiple parallel Kafka producer threads. very simple. Event server also uses multiple sliding queues to control the number of outstanding requests from clients. A typical single-threaded implementation is centered around a poll loop. If the code you include runs in a single thread, your producer can issue only a single message at once. So My question is, do I need to add multithreading code to producer (like consumergroup class has) to support huge number of requests? I read producer send method is thread safe. A producer partitioner maps each I am a new student studying Kafka and I've run into some fundamental issues with understanding multiple consumers that articles, documentations, etc. Since the file reading is done in one thread, thread safety concerns related to Kafka producer access are minimized. Kafka can be run using local scripts and downloaded files or the docker image. It takes messages from your application and delivers them to Kafka topics with guaranteed reliability. KafkaProducer(**configs) [source] A Kafka client that publishes records to the Kafka cluster. This approach simulates Kafka’s … Is it possible to have single instance of a Kafka producer shared between multiple threads to send messages to multiple topics? Is there any concurrency issue I might want to be aware of before? On the other hand, Kafka producers are thread-safe and can be shared among multiple threads. Multi-Threaded Kafka Consumer. Step 1: Get Kafka Download the latest Kafka release and extract it: $ tar -xzf kafka_2. In my existing solution, I have a single threaded consumer, deployed to multiple instances. In this c Parallel Apache Kafka client wrapper with per message ACK, client side queueing, a simpler consumer/producer API with key concurrency and extendable non-blocking IO processing. If you need better performance, try experimenting with multiple threads sharing one producer. Apache Kafka is a powerful distributed streaming platform that allows multiple producers and consumers to interact with data in real-time… Learn how to configure multiple listeners for the same Kafka topic using Spring Boot. 0 Step 2: Start the Kafka environment NOTE: Your local environment must have Java 17+ installed. Here is a simple example of using the producer to send records with strings containing sequential numbers as the key/value pairs. The producer manages a single background thread that does I/O as well as a TCP connection to each of the brokers it needs to communicate with. 10 I am just exploring Kafka, currently i am using One producer and One topic to produce messages and it is consumed by one Consumer. So, let’s delve into the world of Kafka’s architecture and practical benefits of this tool for a multi-threaded application. NET library that provides a high-level producer, consumer and AdminClient compatible with all Apache Kafka® brokers version 0. I want to use multiple threads for sending events via Kafka's Consumer Java-API. The topic described today, concurrency with Kafka and Spring Boot, rather deals with the basic issues. 9. NET Client for Apache Kafka Confluent develops and maintains confluent-kafka-dotnet, a . Does it mean i can use single Producer to publish messages to multiple topics? class kafka. tgz $ cd kafka_2. If it is not possible to make your listener thread-safe or adding synchronization would significantly reduce the benefit of adding concurrency, you can use one of a few techniques: When using a concurrent message listener container, a single listener instance is invoked on all consumer threads. In Kafka topics, records are grouped into In a high volume real time java web app I'm sending messages to apache kafka. So I need a multi-thread consuming and producing for this requirement. I have a producer which will be multi-threaded. Multi-threaded consumer model ⌗ In this blog, we will explore ways to increase the concurrency of a kafka consumer so that we can achieve more with a single consumer than simply increasing the number of partitions. What is a producer? In Kafka Consumer, There are different threaded methods for consuming messages from topics. ThreadPoolExecutor(max_workers=10) as executor: A dev gives a quick tutorial on how get up and running with the ExecutorService portion of the consumers in your Kafka application in a three step process. Simply call the `producer` function of the client to create it: TABLE_CACHE_MAX_STORAGE_FRACTION_FOR_INGEST_AND_HTTP_ONLY Kafka producer是单线程的，但是有时候会有单进程大量写入数据到kafka的需求，这时单线程的producer往往就难以满足需求，但是如果在每个发送线程里new一个新的producer又太浪费资源，因此我们想是否能有办法像数据库连接池一样复用kafka连接最终实现多线程写入 . Oct 14, 2025 · In this blog post, we will explore the core concepts of Kafka producer thread safety, provide typical usage examples, discuss common practices, and present best practices for using Kafka producers in a multi-threaded environment. Oct 2, 2024 · To implement a multi-threaded Kafka consumer using Java, you can follow several strategies. Explore advanced threading models for Kafka producers, focusing on maximizing throughput and ensuring safe concurrent message production. If there are multiple producers and we want to pass in different producer config, is there out of the box support in Spring? Or should I just go without spring in that case? a CONSUMER of the the group can have multiple streams namely the number of threads that read from the topic and the best practice is to have one thread for partition. I'm planning to build a critical component which produces the messages to kafka. Basically, it’s an in Mar 24, 2016 · The producer is thread safe and should generally be shared among all threads for best performance. I need to produce a lot of messages in Kafka as efficient as possible. When implementing a multi-threaded consumer architecture, it is important to note that the Kafka consumer is not thread safe. - confluentinc/paral To publish messages to Kafka you have to create a producer. You can find a changelog of release updates in the GitHub client repo. Multi-threaded consumer model In the thread per consumer model, each thread is instantiated and connects to Kafka broker. The producer is thread safe and sharing a single producer instance across threads will generally be faster than having multiple instances. futures. Answer Sharing a Kafka producer between threads is crucial for optimal throughput and resource utilization in multi-threaded applications. with concurrent. But when used with DefaultKafkaProducerFactory which produces singleton Producer object, all thread-local producer of KafkaTemplate points to same single Producer, thus sharing send queue. TABLE_CACHE_MAX_STORAGE_FRACTION_FOR_INGEST_AND_HTTP_ONLY Instead, divide your logic into threads that use the same Kafka producer. Multi-threaded Kafka Consumer Start a thread pool with max_workers equivalent to the number of partitions your topic has. Scaling up Kafka producers are thread-safe. 15 I have an application that may need multiple producers. have not been too helpful with so far. Learn three different methods of subscribing a Kafka consumer to multiple topics. feajb9, hjbov, nrvf, zhsd, w25oy, fo5l, xdxc, n64he, pd8zu, sejdac,