I was finally impressed with systemd when I recently had to port our single-process multi threaded TCP/UDP server (listening on a heap of ports) at work to a multiple binary/process, single threaded asynchronous IO system.

PartOf= let us still have one top level “lithium” service to start and stop which starts and stops all of the other services, while being able to use journalctl to view them as one log file via a wildcard!

Super nice, it’s been quite lovely.