Comment by throw1234651234

I don't do it in my head. I do diagrams, then discuss them with other people until everyone is on the same page. It's amazing how convoluted get data from db, do something to it, send it back can get, especially if there is a queue or multiple consumers in play, when it's actually the simplest thing in the world, which is why people get over-confident and write super-confusing code.