The Error Said “No Rates.” The Rates Were Right There.
The application said there were no rates. The raw response disagreed. That contradiction changed the entire investigation.
Notes
Working notes on architecture, distributed systems, integration design, and better ways to build.
The application said there were no rates. The raw response disagreed. That contradiction changed the entire investigation.
The rollback was green. Orders were still failing. Recovery turned out to be a business state, not a deployment event.