Ten million calls a day with a team of three
There’s a version of a scaling story that’s all dashboards and Kubernetes. This isn’t that one. This is about a phone-number-verification product called CODAC that, at its peak, placed more than ten million calls a day, made around $12M a year, and was run by three people. We did it on a cluster of telephony servers that mostly looked like pets, not cattle, and the hardest problem we solved had nothing to do with the volume. ...