I am altering the deal

Imagine your legacy production Ruby application is highly dependent on a third-party API — until you learn your vendor deprecates your current connection. What do you do when you’re forced to make a change? Accept the challenge by embracing abstractions, switching libraries, feature flags, edge-case testing while developing new features. Game on.

Focuses on: Famous example of third-party dependencies that have broken application; Abstracting the API interaction; Utilizing Ruby switching libraries; Feature flagging; Testing for edge cases (QA & customer service); and much more!

Transcript

1. I AM ALTERING THE DEAL (PRAY I DON’T ALTER IT FURTHER) Brittany Martin parisRB 2020 Brittany Martin @BrittJMartin
2. Brittany Martin Lead Web Developer @ Pittsburgh Cultural Trust Brittany Martin @BrittJMartin
3. Host 5 B Y 5 R U B Y O N R A I L S P O D C A S T Brittany Martin @BrittJMartin
4. Norma Skates L I T T L E S T E E L D E R B Y G I R L S Brittany Martin @BrittJMartin
5. THE DEAL Brittany Martin @BrittJMartin
6. 3rd Party Dependencies C R E D I T : M e d i a c l i p Brittany Martin @BrittJMartin
7. Do they always behave? C R E D I T : T H E F O U N D Brittany Martin @BrittJMartin
8. C R E D I T : H i C l i p a r t S T R AT E G Y Brittany Martin @BrittJMartin
9. Avoid Catastrophe! Brittany Martin @BrittJMartin
10. Strong Customer Authentication C R E D I T : P Y M N T S . C O M Brittany Martin @BrittJMartin
11. Payments Intent C R E D I T : M O L p a y Brittany Martin @BrittJMartin
12. I N S TAG R A M C R E D I T : S e a r c h E n g i n e J o u r n a l Brittany Martin @BrittJMartin
13. Graph API C R E D I T : S a n i t y Brittany Martin @BrittJMartin
14. Brittany Martin @BrittJMartin
15. Brittany Martin @BrittJMartin
16. Brittany Martin @BrittJMartin
17. Rollback Hell C R E D I T : D e p l o y B o t Brittany Martin @BrittJMartin
18. C R E D I T : S t a r W a r s Brittany Martin @BrittJMartin
19. C R E D I T : A t l a s s i a n Brittany Martin @BrittJMartin
20. AutomateTesting C R E D I T : C h a r u d e a l Brittany Martin @BrittJMartin
21. Beauty in Testing Brittany Martin @BrittJMartin
22. Performance C R E D I T : A b d u l R a h m a n Brittany Martin @BrittJMartin
23. P E R F T E S T Brittany Martin @BrittJMartin
24. LOAD TESTING Brittany Martin @BrittJMartin C R E D I T : P i x a b a y
25. Perform. C R E D I T : P i x a b a y Brittany Martin @BrittJMartin
26. Ruby Community C R E D I T : J o n n y L e w Brittany Martin @BrittJMartin
27. Benchmark VCR Scientist Brittany Martin @BrittJMartin
28. C R E D I T : G i t h u b , P i x a b a y Branch by Abstraction Brittany Martin @BrittJMartin
29. Scientist G ITHU B C R E D I T : P i x a b a y Brittany Martin @BrittJMartin
30. C R E D I T : G i t h u b Brittany Martin @BrittJMartin
31. require "scientist" class MyWidget def allows?(user) experiment = Scientist::Default.new "widget- permissions" experiment.use { model.check_user? (user).valid? } # old way experiment.try { user.can?(:read, model) } # new way experiment.run end end C R E D I T : G i t h u b Brittany Martin @BrittJMartin
32. VCR C R E D I T : B B C Brittany Martin @BrittJMartin
33. C R E D I T : T e e P u b l i c Brittany Martin @BrittJMartin
34. require 'rubygems' require 'test/unit' require 'vcr' VCR.configure do |config| config.cassette_library_dir = "fixtures/vcr_cassettes" config.hook_into :webmock end class VCRTest < Test::Unit::TestCase def test_example_dot_com VCR.use_cassette("synopsis") do response = Net::HTTP.get_response(URI('brittanymartin.dev")) assert end end end Brittany Martin @BrittJMartin
35. B E N C H M A R K C R E D I T : S p r o u t S o c i a l Brittany Martin @BrittJMartin
36. SOAP vs.Rest Brittany Martin @BrittJMartin Benchmark.bmbm(100) do |x| x.report("SOAP") { n.times do Webservices::Requests::GetNewSessionKeyRequest.new({:ip => '0.0.0.0'}).invoke.session_key end } x.report("REST") { n.times do Rest.new.create_session('0.0.0.0')['SessionKey'] end} end APIs called 100x each. Benchmark::Tms:0x00007ff17de18270 @label="SOAP", @real=3.547331999987364, @cstime=0.0, @cutime=0.0, @stime=0.09988699999999984, @utime=1.6087319999999998, @total=1.7086189999999997 Benchmark::Tms:0x00007ff17f596f50 @label="REST", @real=26.420482000001357, @cstime=0.0, @cutime=0.0, @stime=0.17270999999999992, @utime=1.5042220000000004, @total=1.6769320000000003 SOAP real-time = 3.547331999987364 REST real-time = 26.420482000001357 SOAP is 8x faster.
37. Brittany Martin @BrittJMartin
38. C R E D I T : C o l l i s Brittany Martin @BrittJMartin
39. Silver Linings. C R E D I T : 4 D H u m a n B e i n g Brittany Martin @BrittJMartin
40. C R E D I T : N Y T i m e s Brittany Martin @BrittJMartin
41. B R E A K U P C R E D I T : V e r a A r s i c Brittany Martin @BrittJMartin
42. Be Strong A V O I D N E G A T I V I T Y Brittany Martin @BrittJMartin
43. C R E D I T : T e s T e a c h Brittany Martin @BrittJMartin
44. brittanymartin.dev 5by5.tv/rubyonrails Please lunch with me! Brittany Martin @BrittJMartin