1. Migrating from Monolithic Rails
by Danielius Visockas
Twitter: @DVisockas
v1

2. Let’s look at Rails

4. Desktop only
Extractions of patterns
History of Rails

5. Let’s fast forward 10 years

6. Why Rails is nice:
● Routing
● Models (!)
● Persistence (migrations, schema)
● Sessions, cookies management
● Mailers
● Other stuff (rake tasks, assets pipeline, etc)

8. Story actually starts here

9. We had 2 apps
Main Rails app and Sinatra for the API

10. In the main app we used plain Rails
views and jQuery for the magic

11. Frontend magic
548 view files 84 javascript files
some files that would make sense

12. Late extraction costs more than early abstraction
Especially in frontend

13. &&
Your friends

14. Next thing: build an API
That’s where Ruby is the best tool

15. Ruby API building tools

17. An opinionated micro-framework for creating REST-like APIs in Ruby.
http://intridea.github.io/grape
● Specifically for building API’s
● Minimal
● Fast (Grape: 2227 req/sec vs RailsAPI: 1111.42 req/sec) on 1.9.3

18. Other cool features of moving to
Grape
● Support from the community
● You already have models
● Documentation
● Easy integration into Rails

19. From evolution to revolution
● Small steps
● Reduced server load
● Easier to add other (micro-)services
● Easier scaling
● You can concentrate on one side of the app

20. Try it after 2 days

21. Thank you!
Please ask questions

22. Vilnius Ruby community

23. Speakers
THANK YOU
Our stage is OPEN & everyone
is welcomed to share
Next meetup: April 9th

24. March 21st
Konstitucijos pr. 20A
Free!*
www.rubyconf.lt
*- registration required

25. Ruby +

26. Sponsors

27. Afterparty!
Šnekutis, Šv. Mikalojaus g.15