Journal
How we ship voice.
Measurements, incidents and decisions from building an Indian voice stack: what broke, what the number was, and what we changed.
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Our cloud vendor went dark for six hours. Our customers never knew.
The failure mode was not the outage. It would have been our own controller reacting to it.
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The deploy log is the git log
A change with no commit is a change with no history, no review and no way back. So we removed the ability to make one.
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We ship voice by measurement, not by vibes
The ear listens to one sample. The defect lived between samples. Pitch analysis found it, and we rolled back the same hour.