Process supervision is a form of operating system service management in which some master process remains the parent of the service processes.
Benefits
Benefits[1] compared to traditional process launchers and system boot mechanisms, like System V init, include:
- Ability to restart services which have failed
- The fact that it does not require the use of "pidfiles"
- Clean process state
- Reliable logging, because the master process can capture the stdout/stderr of the service process and route it to a log
- Faster (concurrent) and ability to start up and stop