A public archive · est. 2026
rootlogic.dev analyzes the deepest root causes of outages, crashes, and systemic failures across domains — cloud, finance, aviation, healthcare, energy, supply chains — without settling for the first cause the press reports.
Featured · 2025-10-20 · SEV1
The day a single DNS record took down half the internetA race condition in DynamoDB’s DNS management software produced an empty record set. Dozens of AWS services assumed the record would always be present, and cascaded to 140+ dependent services across us-east-1 over fifteen hours.
A component fails. Its clients retry. The retries concentrate load at the worst possible moment — when the component is already struggling or just recovering. The system cannot distinguish legitimate load from amplified retries. Recovery becomes impossible without explicit load-shedding.
Observability tools are supposed to be the pair of eyes that sees the outage. In practice, observability tools often share infrastructure with the thing they observe. The dashboard that would tell you the site is down is running on the site.
Diane Vaughan described this for the Challenger disaster. It generalizes: small violations of a standard, accepted without consequence, become the new standard. Over time, the organization is operating outside its own defined safety envelope and does not know it.