CircleCI change history: Delay in data appearing in UI and API

CircleCI reported a major degradation starting 2026-10-09 11:33 UTC, resolved 2026-10-10 02:08 UTC after 14 h 35 min. Customers experienced pipeline, workflow and job delays and failures, delayed UI/API data, and disrupted webhooks and Slack/email notifications; retriggering could create duplicate pipelines. The vendor identified a delay in its data infrastructure.