I almost always only use Channels as the data path between fixed sized pools of workers. At each point I can control if blocking or not, and my code uses all the (allocated) CPUs pretty evenly. Channels are excellent for this data flow design use case.

I have a little pain when I do a cli as the work appears during the run and it’s tricky to guarantee you exit when all the work is done and not before. Usually Ihave a sleep one second, wait for wait group, sleep one more second at the end of the CLI main. If my work doesn’t take minutes or hours to run, I generally don’t use Go.