> you will spend most of your time formatting strings if you do your file I/O asynchronously Which is why good logging systems try to defer as much formatting

> you will spend most of your time formatting strings if you do your file I/O asynchronously Which is why good logging systems try to defer as much formatting logic as possible until the last possible moment (ideally render time). I wish more logging frameworks would log in some efficient intermediary serialization format like Cap'nProto or Protobuf.