{"id":2320,"date":"2025-04-29T09:12:04","date_gmt":"2025-04-29T00:12:04","guid":{"rendered":"https:\/\/skanto.co.kr\/?p=2320"},"modified":"2025-04-29T09:12:04","modified_gmt":"2025-04-29T00:12:04","slug":"the-hidden-complexity-of-event-driven-systems","status":"publish","type":"post","link":"https:\/\/skanto.co.kr\/?p=2320","title":{"rendered":"The Hidden Complexity of Event-Driven Systems"},"content":{"rendered":"\n<p>While decoupling sounds great in theory, it often introduces <strong>invisible coupling<\/strong> &#8211; <span style=\"text-decoration: underline;\">dependencies on event contracts, formats, topics, and message semantics<\/span>.<\/p>\n\n\n\n<p>Here is where things get messy:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Versioning Hell<\/strong>: Changing the shape of an event becomes a breaking change. You can&#8217;t just refactor like you do with REST APIs protected by versioned routers.<\/li>\n\n\n\n<li><strong>Debugging is a Nightmare<\/strong>: Tracing a single business flow across multiple event consumers is like playing detective with a half-burned trail.<\/li>\n\n\n\n<li><strong>Testing Becomes Harder<\/strong>: You can&#8217;t simply hit an endpoint and check the response. You are to simulate events, mock broken, and guess what&#8217;s broken.<\/li>\n\n\n\n<li><strong>Operational Overhead<\/strong>: Kafka clusters are not trivial to operate. You&#8217;ll need Zookeeper (or Kraft), manage partitions, monitor offsets, and deal with worker crashing.<\/li>\n<\/ul>\n\n\n\n<p>What was meant to simplify scalability ends up complicating development and operations &#8211; especially for small and mid-sized teams.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>While decoupling sounds great in theory, it often introduces invisible coupling &#8211; dependencies on event contracts, formats, topics, and message semantics. Here is where things get messy: What was meant to simplify scalability ends up complicating development and operations &#8211; especially for small and mid-sized teams.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[14,7],"tags":[216,215],"class_list":["post-2320","post","type-post","status-publish","format-standard","hentry","category-sw-development","category-7","tag-event-driven-system","tag-kafka"],"_links":{"self":[{"href":"https:\/\/skanto.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/2320","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/skanto.co.kr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/skanto.co.kr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/skanto.co.kr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/skanto.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2320"}],"version-history":[{"count":1,"href":"https:\/\/skanto.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/2320\/revisions"}],"predecessor-version":[{"id":2321,"href":"https:\/\/skanto.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/2320\/revisions\/2321"}],"wp:attachment":[{"href":"https:\/\/skanto.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2320"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/skanto.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2320"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/skanto.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2320"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}