GitHub Cascading Outages: CTO Admits Architectural Coupling and Load-Shedding Failures

Fireship·high signal

May 4 incident degraded Issues, Webhooks, and Codespaces. GitHub CTO Vlad Fedorov attributed recent instability to rapid load growth, architectural coupling allowing localized issues to cascade across critical services, and inability to adequately shed load from misbehaving clients. Mitigated at 16:40 UTC after 30+ user-submitted outage reports.