GitHub's February 9 Incidents: What 'Mitigation' Leaves Out

Tue, 26 May 2026 08:00:00 -0700

GitHub’s availability report for February 2026 covers six incidents and there are two on February 9 worth reviewing. Two windows of degraded service an hour and fourteen minutes apart, and GitHub’s own investigation found they came from the same underlying cause. The first was declared mitigated before the second began. The mitigation GitHub applied was a correct response to what the team could see at the time. It also was not enough to prevent the second incident.

The Observability System I Almost Shipped

Tue, 21 Apr 2026 08:00:00 -0700

I finished a PRD on Sunday for the LLM observability and evaluation stack we’re adding to Revelara. Five layers, twenty-one user stories, async eval scoring, drift detection, the whole thing. I thought it looked great. I was happy with it. Before I started on the implementation, I ran it through our new STPA review tool (mostly because I didn’t trust how happy I was with it, so dogfooding seemed like the best test).

STPA on Revelara

GitHub's February 9 Incidents: What 'Mitigation' Leaves Out

The Observability System I Almost Shipped