Developer's 30-Minute Outage Traced to a Single Overlooked Build Warning

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A developer accidentally took their website offline for roughly 30 minutes while setting up a queue-based pipeline for GitHub webhooks using two Cloudflare Workers. A warning printed during deployment indicated that the second Worker's name was being overridden, causing it to be deployed as a new version of the first Worker and routed to live traffic. Because the Worker was designed to read from a queue rather than handle HTTP requests, every incoming request threw an exception until the issue was identified. The incident, which took about two hours to fully resolve, highlighted how software risks are invisible — a warning line formatted like routine output drew no attention and halted nothing. The author reflects that unlike physical hazards, risky code changes look identical to safe ones on screen, making it easy for critical warnings and edge-case risks to go unnoticed until they cause real incidents.

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