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 seting up multiple daemontool supervised instances.

Usage

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.

Build dependencies

meson as build system
glib >= 2.16.0
libev

Build

Setup a build directory build:

meson setup build --prefix /usr/local

Compile it:

meson compile -C build

Install:

meson install -C build

Usage

See man page, e.g. rendered for debian unstable.