Twitter was quite famous for their fail whale page which would come up often. Reddit also had a lot of trouble keeping up with user visits. From a technical st

Twitter was quite famous for their fail whale page which would come up often. Reddit also had a lot of trouble keeping up with user visits. From a technical stand point, they aren’t great examples of scaling away from a simple mvp implementation. They did manage to give users something so good that users were willing to put up with the outages.