I/O completion ports was always my go to answer for this but perhaps recent async improvements have helped close that gap? [see also https://news.ycombinator.c

I/O completion ports was always my go to answer for this but perhaps recent async improvements have helped close that gap? [see also https://news.ycombinator.com/item?id=11865760 https://news.ycombinator.com/item?id=11865760 for a lively discussion on this topic]