Hehe, being a Java dev since the late 90’s meant seeing a lot of bad code. My favorite was when I was working for a large life insurance company.

The company’s customer-facing website was servlet based. The main servlet was performing horribly, time outs, spinners, errors etc. Our team looked at the code and found that the original team implementing the logic had a problem they couldn’t figure out how to solve, so they decided to apply the big hammer: they synchronized the doService() method… oh dear…