either feast or famine

Describing a situation in which there is either an excess or a dearth of something. Freelance work always seems to be either feast or famine, unfortunately—either you have too many projects to stay on top of, or barely enough to get by. The team won their first six games handily, and now they've lost seven in a row. I swear, it's either feast or famine with these guys! These coastal towns have economies that are propped up entirely by tourists, making things either feast or famine depending on the time of year.