This is fucking bananas. For nearly a decade, Facebook has been at the forefront of innovating how code is deployed at global scale. They presumably have gradual rollouts, automated rollbacks, anomaly detection, not to mention (I assume) loads of organizational safeguards in place to ensure this sort of thing never happens.<p>Something else happened. This was not a configuration issue. Edit: If it was, I'd expect a post-mortem post-haste.