[clappski]

My comment wasn’t about buffered writing in a main thread, it was about moving the work out of your threads actually executing your program and having them push raw log actions into a queue for another thread to do the formatting and writes to file from.

If you’re logging so much that you’re saturating a dedicated thread that just reads from a queue in shared memory, does log formatting and writes to a file then you have bigger problems than figuring out how to log because there isn’t going to be a solution that lets you log with a deterministic latency without skipping events or wrapping around your queue.

Of course, the approach scales fine if you can have multiple log files per process - e.g. a normal log file and a message log or transaction log, because you can give each file its own queue and thread.