> The part of log4j functionality that gets used in practice, most of the time, is just a wrapper around printf which adds a timestamp and a log-level. I... do

> The part of log4j functionality that gets used in practice, most of the time, is just a wrapper around printf which adds a timestamp and a log-level. I... don't think this is true? When I was using it we used log rotation, log truncation, configurable output formatting that could be made consistent across the code or specialized in certain parts of the code base that required more detailed logging, masking credit card numbers and emails in log statements, and doing all of the logging async to not impact performance. And I'm sure there are features it has which I didn't mention.