Install Rails/lighttpd with DarwinPorts for Tiger

install darwinports package

Add 'export PATH=/opt/local/bin:$PATH' to ~/.bashrc

sudo port -d selfupdate

sudo port install ruby

sudo port install rb-rubygems

sudo gem install rails --include-dependencies

sudo port install readline

sudo port install lighttpd

vi /opt/local/etc/lighttpd.conf [edit lighttpd.conf to your liking]

set up launchd item for lighttpd
        -- restart lighttpd: sudo launchctl stop net.lighttpd
                             sudo launchctl start net.lighttpd

sudo port install fcgi

sudo port install rb-fcgi
         
install official OS X MySQL package (not darwinports)

sudo gem install mysql -- --with-mysql-dir=/usr/local/mysql

Links:
darwinports package
launchd item
OS X MySQL package

Rails MySQL Session Sweeper

1) Download the launchd GUI, Lingon, from: http://lingon.sourceforge.net/

2) Add hourly job:

$RAILS_APP_DIR/script/runner 'ActiveRecord::Base.connection.delete("DELETE FROM sessions WHERE updated_at < now() - INTERVAL 1 HOUR")'

3) My launchd task plist file (yours will vary):

        Label
        us.boygeni.mysql-session-sweeper
        LowPriorityIO
        
        ProgramArguments
        
                /users/defeated/Sites/rails_apps/boygenius/script/runner
                'ActiveRecord::Base.connection.delete("DELETE FROM sessions WHERE updated_at < now() - INTERVAL 1 HOUR")'
        
        RunAtLoad
        
        StartInterval
        3600