Multiwatch forks multiple instance of one application and keeps them running; it is made to be used with spawn-fcgi, so all forks share the same fastcgi socket (no webserver restart needed if you increase/decrease the number of forks), and it is easier than to setup multiple daemontool supervised instances.
Example for spawning two rails instances:
#!/bin/sh # run script exec spawn-fcgi -n -s /tmp/fastcgi-rails.sock -u www-rails -U www-data -- /usr/bin/multiwatch -f 2 -- /home/rails/public/dispatch.fcgi
More details in the man page.
- MIT: source:COPYING