[jfrunyon]

I guarantee you that every single person at Facebook who can do anything at all about this, already knows there's an issue. What would them receiving an extra notification help with?

[robalfonso]

We kind of got off topic, I was arguing that if you were concerned about internal systems being down (including your monitoring/alerting) something like pager duty would be fine as a backup. Even at huge scale that backup doesn’t need to watch everything.

I don’t think it’s particularly relevant to this issue with fb. I suspect they didn’t need a monitoring system to know things were going badly.