Splitting an app up in different processes is great for performance and scalability. The downside, however, is that it becomes much more complicated to get the app and all of its parts running. Foreman is an attempt to make this easier. Using foreman you can declare the various processes that are needed to run your application using a Procfile.

1. FOREMAN
Process manager for applications with multiple components
by Stoyan Zhekov

2. *file quiz

3. Rakefile

4. Rake

5. Gemfile

6. Bundler

7. Procfile

8. ?

9. Foreman

10. MATZ HEROKU

11. HEROKU + FOREMAN

12. Foreman

14. PROBLEM ?

15. Too complicated applications

16. XMPP Bot
(Blather)

17. XMPP Bot Web Frontend
(Blather) (Rails)

18. XMPP Bot Web Frontend
(Blather) (Rails)
TWT Stream
(Event Machine)

19. XMPP Bot Web Frontend
(Blather) (Rails)
TWT Stream API
(Event Machine) (Sinatra)

20. XMPP Bot Web Frontend
(Blather) (Rails)
TWT Stream API
(Event Machine) (Sinatra)
BGND Jobs
(Resque)

21. XMPP Bot Web Frontend
(Blather) (Rails)
TWT Stream API
(Event Machine) (Sinatra)
BGND Jobs Cronjobs
(Resque) (Clockwork)

22. HOW TO START THEM?
• rails: rails server thin -p $PORT

23. HOW TO START THEM?
• rails: rails server thin -p $PORT
• api: rackup -s thin -p $PORT -E production

24. HOW TO START THEM?
• rails: rails server thin -p $PORT
• api: rackup -s thin -p $PORT -E production
• bot: ruby jabber_bot.rb -D

25. HOW TO START THEM?
• rails: rails server thin -p $PORT
• api: rackup -s thin -p $PORT -E production
• bot: ruby jabber_bot.rb -D
• cron: clockwork clock.rb

26. HOW TO START THEM?
• rails: rails server thin -p $PORT
• api: rackup -s thin -p $PORT -E production
• bot: ruby jabber_bot.rb -D
• cron: clockwork clock.rb
• jobs: QUEUE=* rake resque:work

27. HOW TO START THEM?
• rails: bundle exec rails server thin -p $PORT
• api: bundle exec rackup -s thin -p $PORT
• bot: bundle exec ruby jabber_bot.rb -D
• cron: bundle exec clockwork clock.rb
• jobs: QUEUE=* bundle exec rake resque:work

28. Nightmare !

29. Foreman

30. PROCFILE
rails: bundle exec rails server thin -p $PORT
api: bundle exec rackup -s thin -p $PORT
bot: bundle exec ruby jabber_bot.rb -D
cron: bundle exec clockwork clock.rb
jobs: QUEUE=* bundle exec rake resque:work

31. foreman start

33. IT JUST WORKS!

34. NOT ONLY RUBY
node: node web.js
clojure: lein run -m
...

35. DOES IT SCALE?
foreman start
-c web=5,job=2

36. OS INTEGRATION
$ sudo foreman export upstart /etc/init -a myapp
[foreman export] writing: /etc/init/myapp.conf
[foreman export] writing: /etc/init/myapp-web.conf
[foreman export] writing: /etc/init/myapp-web-1.conf
$ sudo start myapp

39. Thank you!