https://dinhnn.com/tags/workers/ Recent content in Workers on Định Nguyễn Hugo en-us Fri, 03 Apr 2026 00:00:00 +0700 https://dinhnn.com/posts/cloudflare-workers-subrequest-limit-postmortem/ Fri, 03 Apr 2026 00:00:00 +0700 https://dinhnn.com/posts/cloudflare-workers-subrequest-limit-postmortem/ <h2 id="tldr" class="anchor-link"><a href="#tldr">TL;DR</a></h2> <p>Deploying a Jira time-report API on Cloudflare Pages (Workers edge runtime) caused <strong>silent data loss</strong> for 25 out of 57 issues. The root cause was Cloudflare Workers&rsquo; <strong>50-subrequest-per-invocation limit</strong> on the free tier. Fixed by embedding worklogs in the JQL search response instead of making separate API calls per issue.</p> <hr> <h2 id="the-problem" class="anchor-link"><a href="#the-problem">The Problem</a></h2> <p>When selecting all 9 Jira boards on the time report page, team member &ldquo;Ngọc Định Nguyễn&rdquo; showed <strong>8h</strong> instead of the correct <strong>30.5h</strong>. Selecting only boards 36+37 showed the correct value.</p>