https://felix-seifert.com/blog/tags/communication/ Recent content in Communication on Felix Seifert Hugo en-gb Felix Seifert Mon, 13 Apr 2020 06:07:18 +0000 https://felix-seifert.com/blog/asynchronous-communication-difference-between-queue-topic/ Mon, 13 Apr 2020 06:07:18 +0000 https://felix-seifert.com/blog/asynchronous-communication-difference-between-queue-topic/ <p>In his book <a href="http://shop.oreilly.com/product/0636920023777.do" target="_blank" rel="noopener">Cloud Architecture Patterns</a> (O&rsquo;Reilly Media, 2010), Bill Wilder described important characteristics for cloud-native app development. Amongst others, cloud-native apps feature an asynchronous communication. Asynchronous communication means that messages are either published on a topic or send to a queue. This enables reactive programming through famous message brokers like <a href="https://www.rabbitmq.com/" target="_blank" rel="noopener">RabbitMQ</a> or <a href="https://kafka.apache.org/" target="_blank" rel="noopener">Apache Kafka</a>. But what are &lsquo;queue&rsquo; and &rsquo;topic&rsquo;? This article describes the differences between asynchronous messaging via a topic or a queue.</p>