[skewart]

Interesting. But if, lets say, a data center in London where they have a lot of boxes goes down completely, then they spin up boxes in Frankfurt and Riga to take up the load and reroute traffic. Service is disrupted for some customers for a few minutes. Some people lose some stuff completely because replication wasn't happening perfectly. But the entire site doesn't go down for everyone for two hours.

Are those kinds of failover scenarios frequently messy and risky at the scale of Github? Or is it more likely that in the context of a fast growing company, and even at a place as "cloudy" as Github, there are bound to be some serious bugs lurking in your system design?