Rails JSON APIとサービス高速化 / JSON Serializer 2020

「リードエンジニアから学ぶMedPeerのプロダクト開発」
https://medpeer.connpass.com/event/181835/

Transcript

1. +40/
   "1*ͱ
   αʔϏεߴ଎Խ
2. ࣗݾ঺հ w 5XJUUFS
   !MOJ@5
 (JUIVC
   !MOJU
   w .FE1FFS
   &OHJOFFS ʙ
   w ޷͖ͳ3BJMTͷϝιου

   QSFTFODF
   w ݏ͍ͳ3BJMTͷϝιου

   BDDFQUT@OFTUFE@BUUSJCVUFT@GPS
3. ΫϦχοΫ։ۀࢧԉ
   ϓϥοτϑΥʔϜ
4. ෺݅୳͠ ϊ΢ϋ΢ऩू
5. ͭͬͨ͘ػೳ (PPHMF.BQ্Ͱ
   ෺݅୳͠
   ڝ߹ͷఁ࡯
   ױऀ਺༧ଌ
   ͕ͻͱ໨Ͱ෼͔Δ΍ͭ
6. ϦϦʔεޙʹ໰୊͕
7. ͱͯ΋஗͍
8. ද͕ࣔ஗͍  ݕࡧ͔ͯ͠Β෺݅Λදࣔ͢Δ·Ͱʜ ඵʙඵ
9. ෺݅୳͠αʔϏε
   ͳͷʹ
   ୳͢ͷ͕஗͍ʂ
10. +40/
    "1*Λ଎͘ʂ ˢຊ೔ͷςʔϚ
11. ݪҼ͸ʁ
12. ୹བྷతࢥߟ  ฦ٫͢Δ݅਺ʹൺྫͯ͠ύϑΥʔϚϯεѱԽ
13. ୹བྷతࢥߟ  ฦ٫͢Δ݅਺ʹൺྫͯ͠ύϑΥʔϚϯεѱԽ
     ύϑΥʔϚϯε໰୊ͱ͍͑͹%# Ͱ ͑ ΂ ͑
14. ୹བྷతࢥߟ  %#पΓͷΑ͋͘ΔରԠ
    Λ΍ͬͯ΋Βͬͨ
     JOEFYுΔ
     / ͳ͘͢
15. ղܾʂ ΊͰͨ͠ʁ
16. ղܾ͠ͳ͔ͬͨ ෺݅"1*      վળલ վળޙ
17. ͱͯ΋஗͍ˠ஗͍ ඵˠඵ
18. ϘτϧωοΫ୳͠  %#͡Όͳ͍ͳΒʜ Completed 200 OK in 2199ms (Views: 2127.1ms | ActiveRecord: 51.2ms) Completed 200 OK in 2300ms (Views: 2200.7ms | ActiveRecord: 67.0ms)
19. ϘτϧωοΫ୳͠  7JFXT͕஗͍ʂ
     KTPOͷϨϯμϦϯά෦෼ʁ (Views: 2127.1ms | ActiveRecord: 51.2ms) (Views: 2200.7ms | ActiveRecord: 67.0ms)
20. +40/γϦΞϥΠζ
    ͳΜͱ͔͢Δ
21. +40/γϦΞϥΠζ  ʮ"DUJWF.PEFM4FSJBMJ[FSTʯΛར༻͍ͯͨ͠
     ࿝ฮHFNͰ࢖͍΍͍͢
     ύϑΥʔϚϯε໘ͰଞHFNͱൺֱ͞Ε͕ͪ
     KCVJMEFSΑΓ͸଎͍ͷ͕ͩʜ
22. ৐Γ׵͑ʂ
23. ͦ΋ͦ΋
    +40/γϦΞϥΠβ
    Կ࢖͑͹͍͍ʁ໰୊
24. ௐࠪ
25. ଟछଟ༷ͳબ୒ࢶ
27. +40/γϦΞϥΠβ
    ઓࠃ࣌୅
28. ൺֱ
29. ൺֱ  ൺֱର৅
     KCVJMEFS
     "DUJWF.PEFM4FSJBMJ[FST
    ".4
     GBTU@KTPOBQJ
     KC
30. KCVJMEFS # app/views/messages/show.json.jbuilder json.content format_content(@message.content) json.(@message, :created_at, :updated_at) json.author do json.name @message.creator.name.familiar json.email_address @message.creator.email_address_with_name json.url url_for(@message.creator, format: :json) end json.comments @message.comments, :content, :created_at
31. KCVJMEFS  (PPE
     3BJMTσϑΥϧτ౥ࡌ ৽نϝϯόͷֶशίετ௿
     ϝϯς͞Ε͍ͯΔ 3BJMTίΞνʔϜ
     ೚ҙͷεΩʔϚͰฦ٫Ͱ͖Δ
     #BE
     ௿଎ʜ
     ಠಛͳه๏͕ͳ͡·ͳ͍ਓ΋ଟ͍
     0UIFS
     (*U)VCελʔ਺
    L
32. ".4 class PostSerializer < ActiveModel::Serializer attributes :title, :body has_many :comments has_one :author end class CommentSerializer < ActiveModel::Serializer attributes :name, :body belongs_to :post end
33. ".4  (PPE
    
     4FSJBMJ[FSΫϥεͷ࣮૷ςετ͕Մೳ
     ೚ҙͷεΩʔϚͰฦ٫Ͱ͖Δ
     #BE
     ϝϯςφϯε͞Ε͍ͯͳ͍
     0UIFS
     KCVJMEFSΑΓ͸଎͍͕ଞHFNͱൺֱ͢Δͱ஗͍
     (JU)VCελʔ਺
    L
34. GBTU@KTPOBQJ class MovieSerializer include FastJsonapi::ObjectSerializer attributes :name, :year has_many :actors belongs_to :owner, record_type: :user belongs_to :movie_type end json_string = MovieSerializer.new(movie).serialized_json
35. GBTU@KTPOBQJ  (PPE
     4FSJBMJ[FSΫϥεͷ࣮૷ςετ͕Մೳ
     ߴ଎ʂ
     #BE
     ϝϯςφϯε͞Ε͍ͯͳ͍
     ˞ຊՈ͔Β'PSL͞ΕͨϦϙδτϦͰϝϯς͞ΕͯΔ
     0UIFS
     εΩʔϚ͕
    +40/"1*
    ʹݶఆ͞ΕΔ
     (JU)VCελʔ਺
    L
36. GBTU@KTPOBQJ  +40/"1*
     +40/ߏ଄ͷن໿
     UZQF
    JEඞਢ
     ΞιγΤʔγϣϯ͸
 SFMBUJPOTIJQT
    
 JODMVEFE
 Ͱදݱ͢Δ { "data": [{ "type": "articles", "id": "1", "attributes": { "title": "JSON:API paints my bikeshed!" }, "relationships": { "author": { "data": { "type": "people", "id": "9" } }, }, }], "included": [{ "type": "people", "id": "9", "attributes": { "firstName": "Dan", "lastName": "Gebhardt", }, }] }
37. KC # app/views/messages/show.json.jb json = { content: format_content(@message.content), created_at: @message.created_at, updated_at: @message.updated_at, author: { name: @message.creator.name.familiar, email_address: @message.creator.email_address_with_name, url: url_for(@message.creator, format: :json) } } json[:comments] = @message.comments.map do |comment| { content: comment.content, created_at: comment.created_at } end json
38. KC  (PPE
     KCVJMEFSΑΓૉ௚ʹ3VCZͬΆ͘ॻ͚Δ
     ߴ଎ʂ
     ೚ҙͷεΩʔϚͰฦ٫Ͱ͖Δ
     ϝϯςφϯε͞Ε͍ͯΔ
     #BE
     ʮ4FSJBMJ[FSͷςετॻ͖͍ͨʂʯਓ͸߹Θͳ͍͔΋
     3FRVFTU4QFD4ZTUFN4QFDͰॻ͘͜ͱʹͳΔ
     0UIFS
     (JU)VCελʔ਺
    
39. KCVJMEFS ".4 GBTU@
    KTPOBQJ KC ଎౓ º ˓ ˕ ˕ εΩʔϚ
    ࣗ༝౓ ˓ ˓ ˚ ˓ ςετ
    ͠΍͢͞ ˚ ˓ ˓ ˚ HFN
    ϝϯς ˕ º ˚ ˓ ˞ݸਓͷײ૝Ͱ͢
40. ɾТɾʆ
    Ͳ͏͠Α͏
41. ࠓճ͸଎౓͕໰୊ͳͷͰ
    ϕϯνϚʔΫ ΈΜͳ͍͖ͩ͢
    CFODINBSLJQT
42. CFODINBSLJQT def benchmark Benchmark.ips do |x| x.report('ams') do render_to_string json: ams_tenants, serializer: Ams::TenantSerializer end x.report('fast_jsonapi') do json = FastJsonapi::TenantSerializer.new(tenants).serialized_json render_to_string json: json end x.report('jb') do render_to_string 'index' end x.compare! end end
43. CFODINBSLJQT  ".4
    ˠ
    GBTU@KTPOBQJ΍KCʹ৐Γ׵͑Δ͚ͩͰʜ
     ഒ଎ݟࠐΈʂ˞EFWFMPQNFOU؀ڥଌఆ
     Αͦ͞͏ʂ Comparison: jb: 2.0 i/s fast_jsonapi: 1.8 i/s - 1.10x (± 0.00) slower ams: 1.2 i/s - 1.64x (± 0.00) slower
44. ৐Γ׵͑  Ұ෦"1*ͷʮKCʯ΁ͷ৐Γ׵͑Λબ୒
     બఆཧ༝
     ߴ଎
     ೚ҙͷεΩʔϚͰฦ٫Ͱ͖Δ
     +4ଆ΋࣮૷ࡁͷͨΊεΩʔϚมߋ͸΍Γͨ͘ͳ͍
45. ຊ൪ϦϦʔε݁Ռ
46. TҎ಺
    ౸ୡʂ "status":200,"duration":449.96,"view":299.48,"db":97.36
47. TҎ಺
    ౸ୡʂ ෺݅"1*      վળલ վળͦͷ վળͦͷ
48. 
    
    
    
    
    ΊͰͨ͠
    
    
    
    
    
49. ·ͱΊ
50. ֤HFNͷॴײ  KCVJMEFS
     ඪ४౥ࡌ͕ڧΈ ֶशίετɺϝϯςφϯεܧଓੑ
     ։ൃίετॏࢹ଎౓ʹ໰୊͕ແ͍৔߹ʹ͓͢͢Ί
     ࠓޙ৽ͨͳ৐Γ׵͑ઌ͕ݟ͔ͭΔʜ͔΋ʁ
     "DUJWF.PEFM4FSJBMJ[FST
     ͳΜ͔ͩΜͩ࢖͍΍͍͢
     ϝϯς͞Εͯͳ͍ͷ͕ਏ͍ʜ
     ࠓ࢖͍͑ͯΔਓ͸ɺ
 ٸ͗৐Γ׵͑ͳͯ͘΋Αͦ͞͏
51. ֤HFNͷॴײ  GBTU@KTPOBQJ
     ଎౓ॏࢹͷ৔߹ʹ͓͢͢Ί
     +40/"1*ͷ੍໿Λڐ༰Ͱ͖ΔͳΒ͹࢖͍΍͍͢
     ˞ύονͰಈ࡞Λվม͢Δཪٕ΋
     KC
     ଎౓ॏࢹͷ৔߹ʹ͓͢͢Ί
     7JFXʹ௨ৗͷSVCZͬΆ͘ॻ͘ه๏͕߹͑͹࢖͍΍͍͢
52. ·ͱΊ  ϘτϧωοΫ͸ͭͱ͸ݶΒͳ͍ͷͰࠜؾΑ͘վળ͠Α͏
     ϓϩμΫτͷ໰୊ɺϏδωεͷঢ়گΛؑΈͯ
 ͦͷ࣌ʑʹ߹ٕͬͨज़બఆΛ͠Α͏
     ͲͷΞϓϦʹ΋߹͏+40/γϦΞϥΠβͷܾఆ൛͸
 ೥ݱࡏܾΊΒΕͳͦ͞͏
53. KCVJMEFS ".4 GBTU@
    KTPOBQJ KC ଎౓ º ˓ ˕ ˕ εΩʔϚ
    ࣗ༝౓ ˓ ˓ ˚ ˓ ςετ
    ͠΍͢͞ ˚ ˓ ˓ ˚ HFN
    ϝϯςφ ˕ º ˚ ˓