https://dplabs.tech/tags/event-driven/ Recent content in Event-Driven on dplabs — Software Engineering & Technology Consultancy Hugo en-us Mon, 23 Dec 2024 00:00:00 +0000 https://dplabs.tech/blog/event-driven-architecture/ Mon, 23 Dec 2024 00:00:00 +0000 https://dplabs.tech/blog/event-driven-architecture/ <p>Event-driven architecture has become fashionable, which means it&rsquo;s being applied in situations where it doesn&rsquo;t fit. Events are a powerful architectural tool for specific problems. They&rsquo;re a significant operational burden when applied indiscriminately.</p> <p>Understanding when events help and when they hurt requires understanding what problems they actually solve.</p> <h2 id="events-vs-commands">Events vs Commands</h2> <p>The distinction matters more than most tutorials acknowledge.</p> <p>A <strong>command</strong> expresses intent: &ldquo;place this order,&rdquo; &ldquo;cancel this payment,&rdquo; &ldquo;reserve this inventory item.&rdquo; It&rsquo;s addressed to a specific recipient and implies that recipient is responsible for handling it. Commands can be rejected. They have an expected response.</p>