Lotus

Transcript

1. Lotus A c o mp l e t e web

   framework @jodosha / #lotusrb
2. None

3. Do we need yet another web framework?

4. Are you reinventing the wheel?

5. What if we never reinvented the wheel?

6. The wheel

7. None

8. We reinvented the wheel after observing it

9. Complexity should be managed, not hidden.

10. Why does this matter?

11. The ultimate goal is…

12. Money https://flic.kr/p/aFAEHR

13. Use case: http://bit.ly/github-rails-upgrade

14. We should not trade control for convenience.

15. Cost of maintenance 0 20 40 60 80 Years 0

    1 2 3 Covenience Simplicity

16. Silver bullets are a lie.

17. Philosophy

18. Standalone frameworks

19. Full stack applications

20. Few conventions More objects No monkey- patching

21. Few conventions More objects No monkey- patching

22. Few conventions More objects No monkey- patching

23. Simple

24. Simplicity is achieved by removing what isn’t essential

25. Coffee https://flic.kr/p/6rX8pn

26. Convenient https://flic.kr/p/93Bk4K

27. Simple https://flic.kr/p/mn57Zm

28. The output https://flic.kr/p/9oG93w

29. Lotus doesn’t enable optional features by default

30. We perceive as simple the things we are familiar with

31. BookRepository.find 23

32. Rails.application.routes.draw do get '/' => 'home#index', as: :home resources :books

    end ! Rails.application.routes # => ???

33. router = Lotus::Router.new do get '/', to: 'home#index', as: :home

    resources :books end ! router.path(:home) # => '/' router.call(env) # Rack env run router # in config.ru

34. Fast

35. Micro benchmarks http://bit.ly/lotus-micro-bench

36. HTTP benchmarks http://bit.ly/lotus-http-bench

37. Rails 1027.73 Sinatra 2207.73 Lotus 4175.90 http://bit.ly/lotus-http-bench req/s

38. Rails 1027.73 Sinatra 2207.73 Lotus 4175.90 http://bit.ly/lotus-http-bench req/s

39. Rails 1027.73 Sinatra 2207.73 Lotus 4175.90 http://bit.ly/lotus-http-bench req/s

40. Testable

41. Testability is a virtue

42. There is no “test-damaged” design

43. class Show include Lotus::Action ! expose :book ! def initialize(repository

    = BooksRepository) @repository = repository end ! def call(params) @book = @repository.find params[:id] end end

44. book = Object.new repository = Minitest::Mock.new repository.expect(:find, book, [Integer]) !

    action = Show.new(repository) action.call(id: 23) # => [200, {}, nil] ! repository.verify action.book.must_equal book # assigns(:book) isn’t needed

45. Demo

46. The future

47. Get involved

48. lotusrb.org #lotusrb @jodosha

49. Q&A

50. Thank you!