Nitty Gritty Service Building

Transcript

1. Nitty Gritty Service Building Lauren Voswinkel @laurenvoswinkel Github: valarissa
3. Service! Oriented! Architecture
4. Service?
5. Unassociated
6. Loosely Coupled
7. Self- Contained
8. Unit of Functionality
9. Singularly! Focused! Application
10. Benefits
11. Benefits • Asynchronous*
12. Benefits • Asynchronous* • Parallelize-able
13. Benefits • Asynchronous* • Parallelize-able • Loose Coupling
14. Benefits • Asynchronous* • Parallelize-able • Loose Coupling • Faster Tests*
15. Benefits • Asynchronous* • Parallelize-able • Loose Coupling • Faster Tests* • Easier to Extend/Change
16. Benefits • Asynchronous* • Parallelize-able • Loose Coupling • Faster Tests* • Easier to Extend/Change • Increased Velocity
18. HOW?!
20. So many services!
21. New API,! New Possibilities
22. Dog Food! Client
23. Let’s Get! Started
24. Building a Service 1. Determine what the service will do
25. Services should do one thing well
26. Services should do ONE thing well
27. Building a Service 1. Determine what the Service Does 2. Create Endpoints for Service
28. What are the endpoints of your service?
29. Build Controllers
30. Determine Request Options
31. Filters for Response?
32. Multiple Objects Per Request?
33. ActiveModel ::Serializers! ! https://github.com/rails-api/active_model_serializers
34. ActiveModel::Serializers
35. Write Tests
36. Write Tests
37. Contract Your Service Fulfills
38. Building a Service 1. Determine what the Service Does 2. Create Endpoints for Service 3. Create Client Models
39. Don’t Use Plain Responses
40. WARNING: Evil Magic
44. CAUTION:! Great For Rapid- Prototyping…! ! Terrible For! Everything Else
45. Write Tests
46. Proof That Service Hasn’t Changed
47. SonJay! https://github.com/stevecj/son_jay
48. SonJay
49. SonJay
50. Building a Service 1. Determine what the Service Does 2. Create Endpoints for Service 3. Create Client Models 4. Create Communication Layer
51. Find a gem
52. Typhoeus! https://github.com/typhoeus/typhoeus
53. Concurrent Requests
54. WRAP THE GEM
55. WRAP.! THE.! GEM.
56. ActiveRecord! 2.3 -> 3.x
57. BONUS STEP!
58. Client Models
59. +
60. Communication! Layer
61. =
63. Errr…
65. Building a Service 1. Determine what the Service Does 2. Create Endpoints for Service 3. Create Client Models 4. Create Communication Layer 5. Sever Dependencies
66. Replace DB Calls With Service Calls
67. Create the Gap
69. CAUTION:! Multi-Request! Server Needed
70. WEBrick- Wall
71. Building a Service 1. Determine what the Service Does 2. Create Endpoints for Service 3. Create Client Models 4. Create Communication Layer 5. Sever Dependencies 6. Improve Service Performance
72. Round-Trip >
 DB Call
73. Tools
74. StackProf! https://github.com/tmm1/stackprof! ! (Ruby 2.1+)
75. PerfTools.rb! https://github.com/tmm1/perftools.rb! ! (All Other Rubies)
76. PerfTools
77. PerfTools
78. PerfTools
79. PerfTools
80. Building a Service 1. Determine what the service will do 2. Create Endpoints for Service 3. Create Client Models 4. Create Communication Layer 5. Sever Dependencies 6. Improve Performance 7. Transfer Client and/or Service
81. Extract! From Original Codebase
82. Extract Tables/ Database
83. Figure Out How To Keep Multiple Databases In Sync
84. …
85. Please?
86. I have no clue how to do that part…
87. Give a talk on that maybe?
88. Thanks!
89. Lauren Voswinkel @laurenvoswinkel