Flipping the auth provider without logging everyone out
Changing identity providers is a one-way door if you get the order wrong. A checklist for cutting over with a live fallback and a real rollback.
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AWS
Notes tagged AWS
El deploy "exitoso" que no estaba en producción
Un pipeline en verde no significa que tu código está sirviendo. Cómo verificar de verdad que un cambio llegó a producción.
The sidecar I didn't build
The RFC said ClamAV in a container. The research said GuardDuty. Here's what changed, what it cost, and the parts of a HIPAA upload pipeline nobody puts on the diagram.
The subscription that went deaf
Our Salesforce event subscription stopped delivering after a few days of uptime, with no errors and a green health check. The bug was in the transport, and the lesson was about what "healthy" means.
Cache-Control will not save you from a bandwidth bill
A marketing site went from 32 GB to 32 TB of video traffic in nineteen days. The headers we added did nothing, and understanding why is the whole lesson.