But no few would write a process-per-request web server today for example. And if a single process web server handles 100 requests you would then accept that one bad request one tore down the handling of the 99 others. Even if you have a watchdog that restarts the service after the one request choked, you wouldn't save the 99 requests that were in-flight on the same process. Can't you catch_unwind for each request handler, if one chokes then you just ignore that request. If you worry about that messing anything up, then you can tear down and restart your process after that, so the 99 other requests get a chance to complete?