My favourite was the Skype outage in 2007 where a peer to peer algorithm didn’t scale - they had to work this out, and change the algorithm to fix it. It took a

My favourite was the Skype outage in 2007 where a peer to peer algorithm didn’t scale - they had to work this out, and change the algorithm to fix it. It took ages! https://www.wired.com/2007/08/update-skype-ou/ https://www.wired.com/2007/08/update-skype-ou/