![]() A distributed system is a computing environment where various software components located on different machines coordinate together to get stuff done as one unit. Kafka clients and serversīefore we dive into how clients, servers, and the Transmission Control Protocol (TCP) work in Kafka, it’s helpful to know that Kafka is a distributed system. Again, in a payment processing use case, an event stream could be the continuous flow of real-time information about the financial transactions happening in your business. In a payment processing use case, for example, an event might be that a customer has completed a financial transaction.Īn event stream is a sequence of events where events flow from publishers to subscribers. In event streaming, an event (also called a message or record) is simply a record of a state change in the system. Since Apache Kafka is an event streaming platform, not only can it publish and subscribe to streams of events, but also store and process them as they occur. Event streamingĮvent streaming is an implementation of the publish-subscribe messaging pattern with added capabilities. Topics allow for instantaneous, pull-based delivery of messages to subscribers, which is one reason why in a publish–subscribe-based messaging system (such as Apache Kafka), you can handle high volumes of data in real time. Source.Įach topic can have multiple subscribers, and every subscriber receives any message published to the topic. The publish-subscribe messaging workflow. This destination is often known as a topic.įigure 1. With publish-subscribe messaging, senders (also called publishers) send messages to multiple consumers (also called subscribers) using a single destination. There are multiple messaging patterns out there (for example, fan-out or request–response), but we’ll focus on the publish–subscribe messaging pattern for our purposes. ![]() What does that mean?Ī messaging pattern is simply a way messages (a fancy word for bits of data) are transmitted between a sender and receiver. Publish-subscribe messaging patternĪpache Kafka is a publish–subscribe based messaging system. So if you find yourself scratching your head at anything Kafka related, this is the right article for you.Ĭovering everything from the publish-subscribe messaging pattern to Kafka Connect, here are 10 essential Apache Kafka terms and concepts to get you started on your Apache Kafka journey. The concepts of Kafka producers, consumers, topics, partitions, and so on can be hard to grasp for newcomers to Kafka. Developed by the Apache Software Foundation in 2011, Apache Kafka is an open source software platform that can publish, subscribe to, store, and process streams of records in real time.īut what even is an event streaming platform? Heck, what do half the things in Kafka mean? ![]() Apache Kafka has proven to be an extremely popular event streaming platform, with the project reporting more than 60% of Fortune 100 companies using it today. ![]()
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