Tagged deployment

2 pieces

• August 16, 2026 · 6 min read

  Knight Capital: A 460 Million Dollar Deploy With No Consistency Check

  A technician copied new code to eight servers by hand and one did not receive it. A repurposed feature flag then reactivated dormant routing logic on that one server. Roughly 4 million executions in 45 minutes, and no control existed that would have gone red on the divergence.

• August 14, 2026 · 7 min read

  The CrowdStrike Outage Was a Validator That Did Not Test the Thing

  The template defined twenty one input fields and the interpreter supplied twenty. Earlier instances wildcarded the twenty first, so the mismatch could not manifest and four months of deployments succeeded. The validator passed the file that broke it because it checked an assumption rather than the field count.