Course registration like a dam

This morning while registering for courses I was struck with how everyone registering for courses was similar to a dam stopping up a river. Many students experienced the site crashing and had delays while trying to log in. Like a river flowing through a dam, there were too many people trying to use the site at the same time, so the site kept crashing and only allowed some people in at a time, similar to how a dam only allows a small amount of water through at each moment, even though there is much more water trying to go through. Also similar to how a river flowing through a dam can produce energy, the frequent site crashes also caused a lot of frustrated energy from students!