Lotus

Lotus: a complete web framework for Ruby.

Transcript

1. Lotus A c o mp l e t e web framework @jodosha / #lotusrb
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
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!