マイクロサービスとクライアントとコンテキスト境界 / 20181030 #microserv

Microservices Meetup vol.9 (FiNC App & Frontend) - connpass
https://microservices-meetup.connpass.com/event/105174/
の発表資料です。

「クライアント・サーバ間のコンテキスト境界をどこに置くか」
という話を、ドメイン駆動設計の概念などを引きながら検討しました。

Transcript

1. ϚΠΫϩαʔϏεͱ
 ΫϥΠΞϯτͱ
 ίϯςΩετڥք For Microservices Meetup vol.9 2018/10/30 FiNC Technologies Inc. / iOS Development Team ؔ ོٛ(takasek)
2. !2 • ོؔٛ
   •
   
   
   
   
   
   
   
   
   
   
   
   
   !UBLBTFL
   • 'J/$
   5FDIOPMPHJFT
   • $MJFOU
   &OHJOFFS J04
   5FBN ࣗݾ঺հ
3. !3 • ʮJ04ΞϓϦઃܭύλʔϯೖ໳ʯ ڞஶ
   • 1&",4ΑΓ݄ϦϦʔε༧ఆʂ
   IUUQTQFBLTDDJ04@BSDIJUFDUVSF
   .7$
   .71
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   'MVY
   3FEVY
   $MFBO
   "SDIJUFDUVSF
   ϞόΠϧಛ༗ͷىಈܦ࿏ɾը໘ભҠͷ੔ཧ·Ͱ໢ཏʂ
   ؔ͸ɺʮઃܭͱ͸Կ͔ʯͱ͍͏େ͖ͳओޠͰষ΄Ͳʂ
   ೥ .7$ ʙ͔Β࿈໖ͱଓ͘
   ΞʔΩςΫνϟύλʔϯͷྺ࢙ͷ੔ཧʂ
   ϚαΧϦඞࢸͷϏοάΠγϡʔʹՌ׶ʹ௅Έ·ͨ͠ʂ એ఻
4. !4 ຊ೔ͷ͓୊ ʮΫϥΠΞϯτɾαʔόؒͷ ίϯςΩετڥքΛͲ͜ʹஔ͔͘ʯ
5. !5 ίϯςΩετڥքʁ • ڥք಺Ͱ͸ɺϞσϧΛ࿦ཧతʹ౷Ұ͞Εͨঢ়ଶʹอͭ͜ͱ
   • ͨͩ͠ɺڥքͷ֎ʹద༻Ͱ͖Δ͔Ͳ͏͔͸ؾʹ͢Δඞཁ͕ͳ͍ ʮ͋ΔϞσϧΛͲͷίϯςΩετͰ ɹద༻͢΂͖Ͱͳ͍ͷ͔ʯΛࣔ͢ - ΤϦοΫɾΤϰΝϯεͷυϝΠϯۦಈઃܭ ΑΓ
6. !6 ίϯςΩετڥքʁ ˞ڥք͚ͮΒΕͨίϯςΩετΛఆٛͨ͠ΒɺͦΕΛ҆ఆͤ͞ͳ͚Ε͹ͳΒͳ͍
   • ಉ͡νʔϜͰ΋ɺίϛϡχέʔγϣϯ్͕੾Εͯ͠·͏ͱղऍ͕িಥ͠͏Δ
   • ಉ͡νʔϜͰ΋ɺݹ͍ઃܭ৽͍͠ઃܭͰίϯςΩετڥքʹͳΔ ʮڥք͸νʔϜฤ੒ͷྠֲʹै͏ʯ - ΤϦοΫɾΤϰΝϯεͷυϝΠϯۦಈઃܭ ΑΓ
7. !7 BFF BFF (Backends For Frontends) micro- services Repository UseCase Domain ViewModel View Server side Client side
8. !8 BFFʁ ΫϥΠΞϯτϩδοΫͷͨΊͷαʔό
   • ௨৴ͷू໿
   • ू໿ϩδοΫͷڞ༗ Backends For Frontends
9. !9 Repository BFF (Backends For Frontends) micro- services Repository UseCase Domain ViewModel View Server side Client side
10. !10 Repositoryʁ σʔλΛͲ͔͜Βऔಘ͢ΔͲ͜ʹӬଓԽ͢Δ͔Λߟ͑ͳ͍
    • ϝϞϦ
    • ετϨʔδ
    • ωοτϫʔΫ
    • FUDʜ σʔλऔಘɾӬଓԽͷৄࡉΛӅṭ͢Δઃܭύλʔϯ
11. !11 Repositoryʁ ෳࡶͳϩδοΫΛυϝΠϯ͔Β੾Γ཭ͨ͢ΊʹϦϙδτϦ૚Λઃ͚Δ ʮΫϥΠΞϯτ͕ඞཁͱ͢Δͷ͸ɺ ɹ͢Ͱʹଘࡏ͢ΔυϝΠϯΦϒδΣΫτ΁ͷࢀরΛखʹೖΕΔɺ ɹ࣮༻తͳखஈͰ͋Δʯ - ΤϦοΫɾΤϰΝϯεͷυϝΠϯۦಈઃܭ ΑΓ
12. ʮ࣮ࡍʹ௚઀తͳΞΫηεΛඞཁͱ͢Δ ू໿ϧʔτʹରͯ͠ͷΈɺϦϙδτϦΛఏڙ͢Δ͜ͱʯ - ΤϦοΫɾΤϰΝϯεͷυϝΠϯۦಈઃܭ ΑΓ
13. !13 ू໿ʁ • ෆม৚݅ʢৗʹ੔߹ੑΛอ͍ͬͯΔඞཁͷ͋ΔϏδωεϧʔϧʣΛ
 อূ͢Δ୯Ґ
    • ू໿಺Ͱ͸੔߹ੑΛҡ࣋͢Δ
    
14. !14 UseCase BFF (Backends For Frontends) micro- services Repository UseCase Domain ViewModel View Server side Client side
15. !15 UseCaseʁ ʮ%PNBJOʢ஌ࣝͷදݱʣΛͲͷΑ͏ʹ࢖͏͔ʯΛࣔ͢ 4૚ϨΠϠԽΞʔΩςΫνϟͰݴ͏ͱ͜ΖͷApplication૚
16. !16 ViewModel, View BFF (Backends For Frontends) micro- services Repository UseCase Domain ViewModel View Server side Client side
17. !17 ViewModelʁ .77. .PEFM7JFX7JFX.PEFM ύλʔϯͷίϯϙʔωϯτ
    ͨͩɺΞʔΩςΫνϟͷ࢔ࡉ͸ࠓճओ୊Ͱ͸ͳ͍
    ʮ.PEFM7JFXؒͷม׵૚ʯͱ͚ͩଊ͍͑ͯͩ͘͞ υϝΠϯϞσϧͷσʔλΛɺView༻ͷσʔλʹม׵͢Δ૚
18. !18 Viewʁ આ໌ෆཁ ը໘දࣔΛ࢘Δ૚
19. !19 ϚΠΫϩαʔϏεͱίϯςΩετϚοϓ BFF (Backends For Frontends) micro- services Repository UseCase Domain ViewModel View Server side Client side
20. !20 ຊ೔ͷ͓୊ (reprise) ʮΫϥΠΞϯτɾαʔόؒͷ ίϯςΩετڥքΛͲ͜ʹஔ͔͘ʯ
21. !21 ίϯςΩετڥքΛͲ͜ʹஔ͔͘ɿBFF BFF (Backends For Frontends) micro- services Repository UseCase Domain ViewModel View Server side Client side
22. !22 BFFΛม׵૚ͱͯ͠ݟͳ͢ • ϝϦοτ
    • ੔߹ੑʹ͍ͭͯͷ৺഑ࣄΛυϝΠϯ͔Βഉআ
    • ϓϥοτϑΥʔϜ J04"OESPJE
    ౳ ͷॏෳ࣮૷Λഉআ
    • σϝϦοτ
    • #''ʹཔΓ͗͢Δ
    ʹ
    ෼ࢄίϯϐϡʔςΟϯάͷݪଇ΁ͷ௅ઓ
23. !23 ෼ࢄίϯϐϡʔςΟϯάͷݪଇ • ωοτϫʔΫ͸৴པͰ͖ͳ͍
    • ʢ࣌ʹ͸͔ͳΓͷʣ஗Ԇ͕ৗʹൃੜ͢Δ
    • ଳҬ෯ʹ͸ݶΓ͕͋Δ
    • ωοτϫʔΫ͸ηΩϡΞͰ͸ͳ͍
    • ؅ཧऀ͸ෳ਺Ͱ͋Δ
    • సૹίετ͸θϩͰ͸ͳ͍
    • ωοτϫʔΫ͸Ұ༷Ͱ͸ͳ͍ - ࣮ફυϝΠϯۦಈઃܭ ΑΓ
24. !24 ίϯςΩετڥքΛͲ͜ʹஔ͔͘ɿRepository micro- services Repository UseCase Domain ViewModel View Server side Client side
25. !25 RepositoryΛม׵૚ͱͯ͠ݟͳ͢ • ϝϦοτ
    • ੔߹ੑʹ͍ͭͯͷ৺഑ࣄΛυϝΠϯ͔ΒഉআͰ͖Δ
    • σϝϦοτ
    • ͜Ε͸΋͸΍ϏδωεϩδοΫͳͷͰ͸ʜʁ
    • ϓϥοτϑΥʔϜ J04"OESPJE
    ౳ ͷॏෳ࣮૷
26. !26 ίϯςΩετڥքΛͲ͜ʹஔ͔͘ɿUseCase micro- services Repository Domain ViewModel View Server side Client side UseCase
27. !27 UseCaseΛม׵૚ͱͯ͠ݟͳ͢ • ϝϦοτ
    • ʮαʔόͷίϯςΩετΛΫϥΠΞϯτͰͲͷΑ͏ʹѻ͏͔ʯ
 ʹϏδωεϩδοΫͰ͋Δɺͱ͍͏ೝࣝ
    • ΫϥΠΞϯτ։ൃͰ͸ɺࣗવʹ͜͜ʹམͪண͘͜ͱ͕ଟͦ͏
    • σϝϦοτ
    • ϓϥοτϑΥʔϜ J04"OESPJE
    ౳ ͷॏෳ࣮૷
28. !28 ίϯςΩετڥքΛͲ͜ʹஔ͔͘ɿViewModel micro- services Repository View Server side Client side UseCase ViewModel Domain
29. !29 ίϯςΩετڥքΛͲ͜ʹஔ͔͘ɿViewModel micro- services Server side Client side ViewModel View
30. !30 ViewModelͷ੹຿ • ૢ࡞ͷ఻ୡ
    • ϓϨθϯςʔγϣϯঢ়ଶͷอ࣋
    • 7JFX༻ͷσʔλ΁ͷม׵
    •
    ը໘ؒͷ੔߹ੑ୲อ
    •
    αʔϏεؒͷ੔߹ੑ୲อ
31. !31 ViewModelΛม׵૚ͱͯ͠ݟͳ͢ • ΞϯνύλʔϯͰ͸ʁ
32. !32 ίϯςΩετڥքΛͲ͜ʹஔ͔͘ɿView micro- services Server side Client side View Micro Frontends
33. !33 ViewΛม׵૚ͱͯ͠ݟͳ͢ • ϝϦοτ
    • 7JFXϚΠΫϩαʔϏεͷ୯Ґͱݟͳ͢
    • σϝϦοτ
    • ΞϓϦͷ৔߹ʹ͸ɺ
 7JFX͸ϚΠΫϩαʔϏεʢಠཱͯ͠ϏϧυՄೳͳ୯ҐʣͰ͸ͳ͍
    • ΍͸Γը໘ίϯϙʔωϯτؒͷ੔߹ੑΛؾʹ͠ͳ͚Ε͹ͳΒͳ͍
    • ͦΕ͸7JFXͷ੹຿ͩΖ͏͔ʁ
34. !34 ΫϥΠΞϯτ͕୲อ͢΂͖੔߹ੑ • .PEFMͱ7JFXͷؒͷ੔߹ੑ
    • 6*ૢ࡞Λ.PEFMʹ఻ୡ
    • .PEFMͷঢ়ଶมߋΛ7JFXʹ൓ө
    • ڞ௨͢Δ.PEFMʹؔ৺ͷ͋Δ͢΂ͯͷ7JFXʹมߋ͕ಉظ͞ΕΔ
    • .PEFMͱ.PEFMͷ੔߹ੑ
    • αʔϏε"͔ΒͷϨεϙϯεͱ
 αʔϏε#͔ΒͷϨεϙϯεΛͻͱͭͷ.PEFMʹ݁߹͢Δ
    • αʔϏε"Λߋ৽ͨ͠ΒɺαʔϏε#ʹ΋มԽ͕ੜ͍ͯ͡Δ͔΋͠Εͳ͍
    
35. !35 Q.ʮModelͱModelͷ੔߹ੑʯ͸ΫϥΠΞϯτ͕୲อ͢΂͖΋ͷʁ ʮαʔϏε"͕มΘͬͨΒαʔϏε#ʹ΋มߋ͕͋Δʯ͸αʔόͰ୲อ͢΂͖Ͱ͸ʁ
    " ʢΫϥΠΞϯτ͕"1*Λೳಈతʹୟ͍ͯߋ৽Λऔಘ͢Δੈք؍Ͱ͸ʣͦΕ͸ݪཧతʹແཧ
    • ʮαʔϏε"ͷߋ৽͕ɺαʔϏε#ʹ൓ө͞ΕΔʯͱͯ͠ʜ
    • ΫϥΠΞϯτ͸ɺαʔϏε"ͷߋ৽"1*Λୟ͍ͨ͋ͱɺ
 ໌ࣔతʹαʔϏε#ͷऔಘ"1*Λୟ͘ඞཁ͕͋Δ
    • αʔϏε͕ؒ݁Ռ੔߹ੑΛલఏʹ͍ͯ͠Δ৔߹ɺ
 ͞ΒʹʮͲͷ͘Β͍Ͱ൓ө͞Ε͏Δ͔ʯʮϦτϥΠΛͲ͏͢Δ͔ʯ΋ߟྀ
    • ΫϥΠΞϯτ͕࣋ͭαʔϏε#ͷঢ়ଶ͸εφοϓγϣοτͰ͔͠ͳ͍
    • ΫϥΠΞϯτ͸ϚΠΫϩαʔϏεؒͷؔ܎ੑʹ͍ͭͯͷ஌ࣝΛ࣋ͨ͟ΔΛಘͳ͍
36. !36 ໰୊ͷয఺ • αʔόϨεϙϯεͷ੔ܗ
    
    6*ૢ࡞ͷαʔό΁ͷ఻ୡʁ
    • αʔϏεؒͷϋϒͱͯ͠ɺදࣔ಺༰ͷ੔߹ੑΛҡ࣋͢Δʁ
    • ෼ࢄίϯϐϡʔςΟϯάΛආ͚ΔͨΊͷϩʔΧϧͳΠϯλϑΣʔεʁ
    • ෳ਺ͷը໘ؒͰͷ੔߹ੑͷҡ࣋ʁ
    • ΫϥΠΞϯτͱαʔόͷίϯςΩετ͕Ͳ͜·Ͱ౷߹Մೳ͔͸ɺ
 ʮϏδωεϩδοΫʯͷް͞ͰมΘΓ͏Δ ΫϥΠΞϯτʹ͓͚ΔʮϏδωεϩδοΫʯͱ͸Կ͔
37. ʮϏδωεϩδοΫʯͷఆٛ͸ ΞϓϦʹΑͬͯɺ αʔϏεʹΑͬͯҧ͏͸ͣ
38. ͋ͳͨͷαʔϏεʹ͓͍ͯ ΫϥΠΞϯτͷίϯςΩετ ͱ͸ԿͰ͔͢ʁ