GitHub is finally back, after 4h of outage because of a DDoS attack: we can all come back to push changes and the Continuous Integration Engine (e.g. Jenkins) will start building again.
The problem is: how much money you have lost in those 4h of outage ? 50 Developers at $500/day would have costed over over $12,000 … can your Business cope with that risk again and associated losses ?
Having another mirror, a spare wheel either on-premises or on the Cloud, would cost nothing and allow you to limit your costs in case of another GitHub outage ! Give a try to http://gerrithub.io or install Gerrit Code Review on your premises and protect your Development Team.