FintechとRailsとgRPCと

at Rails developer meetup 2018 Day 2

Sample code: https://github.com/cnosuke/bank_sample

Transcript

1. 'JOUFDIͱ
   3BJMTͱ
   H31$ͱ Shinnosuke Takeda a.k.a. @cnosuke Rails developer meetup 2018 day2 ຊߨԋٴͼຊࢿྉʹ͓͍ͯɺࢲ͕ࣾһͱͯؔ͠༩͢Δגࣜձ͓ࣾۚͷσβΠϯͷ ౤ࢿҰ೚ӡ༻αʔϏεʮ5)&0ʯʹ͍ͭͯݴٴ͢Δ৔߹͕͋Γ·͢ɻ
   ͜Ε͸ɺࢲͷઆ໌಺༰ΛΑΓਂ͘͝ཧղ͍ͨͩ͘໨తͰݴٴ͍ͯ͠Δ΋ͷͰ͋Γɺ ಉ౤ࢿҰ೚ӡ༻αʔϏεʮ5)&0ʯͷਪ঑΍ק༠Λߦ͏΋ͷͰ͸͋Γ·ͤΜɻ
   ·ͨɺಉ౤ࢿҰ೚ӡ༻αʔϏεʮ5)&0ʯʹؔ͢Δࢲͷݟղ͸ɺ
   גࣜձ͓ࣾۚͷσβΠϯͱ͸શؔ͘܎ͳ͘ɺࢲݸਓͷ΋ͷͰ͢ɻ
2. @cnosuke ͠Μͷ͚͢/͠ʔͷ͚͢ גࣜձ͓ࣾۚͷσβΠϯ SRE Team Leader / Software Engineer • 2011 WebडୗܥͷελʔτΞοϓ΍ΔɻRoR͸͜ͷࠒ͔Βɻ • 2013 Cookpad (ձһࣄۀ෦, ৽نࣄۀ, ޿ࠂ഑৴ج൫౳) • 2015 ஜ೾େӃCS (म࢜) • 2016 גࣜձ͓ࣾۚͷσβΠϯ (SRE/SWE)
3. Fintech?
4. Finance × Technology
5. Finance × Technology อकతɾด࠯త ֵ৽తɾ։์త
7. ۚ༥αʔϏεʹٻΊΒΕΔ͜ͱ w ߴ͍҆ఆੑ
   w Α͘མͪΔαΠτ͸৴༻͞Εͳ͍
   w ༷ʑͳίϯϓϥΠΞϯεରԠ
   w Ϣʔβ͞Μͷࢿ࢈ΛపఈతʹकΔٛ຿͕͋Δ
   w ͦͷਫ਼ਆʹଇͬͨ๏ྩ΍༷ʑͳنଇʹΑΔཁ੥
8. ҰํͰ… • ʮֵ৽తʯʮ։์తʯͰ͋Γ͍ͨ w සൟʹϦϦʔεαΠΫϧΛ·Θ͍ͨ͠
   w େਓ਺Ͱେن໛։ൃΑΓ͸ɺগਓ਺Ͱখ͍͞ ϓϩδΣΫτΛ͍ͬͺ͍ճ͍ͨ͠
   w ։ൃ΋ʮࣗ༝ʹʯ͍ͨ͠
   w ϦϞʔτϫʔΫ
   w αΠτͷӾཡن੍ͱ͔͸ઈରʹݏͩ
   w 8FC͕ಘҙͳΤϯδχΞ΋͍Ε͹ɺۚ༥͕ ಘҙͳΤϯδχΞ΋͍Δ
9. ։ൃνʔϜ͸Ͳ͏ͳΔͱΑ͍͔ w ҆৺҆શͳྖҬΛ୲౰͢ΔΤϯδχΞνʔϜ
   w ೖग़ۚ؅ཧ
   ূ݊ޱ࠲؅ཧ
   w 6*69ͱ͍ͬͨɺϢʔβʹਖ਼໘͔Β޲͖߹͏νʔϜ
   w ϑϩϯτΤϯυ
   ΞϓϦ޲͚"1*
   ৽نొ࿥ɾޱ࠲։ઃϑϩʔ
   w ۚ༥γεςϜؔ࿈ͷνʔϜ
   w ʮϩϘΞυόΠβʔʯͷֵ৽෦෼
   w ࣮ࡍʹࢢ৔Ͱূ݊ങ͍෇͚Λ͢ΔγεςϜ౳ʑ
10. Conway’s law > Organizations which design systems ... are constrained to produce designs which are copies of the communication structures of these organizations. “γεςϜΛઃܭ͢Δ૊৫͸ɺͦͷߏ଄Λͦͬ͘Γ·Ͷͨߏ଄ͷ ઃܭΛੜΈग़ͯ͠͠·͏” Conway, Melvin E. (April 1968), "How do Committees Invent?"
11. ͭ·Γɺ୲౰νʔϜ͝ͱʹ αʔϏε͸ࣗͣͱ෼ׂ͞ΕΔ
12. ͍ΘΏΔMicroserviceͰ͢Α w νʔϜͷ෼ׂ
    w ΤϯδχΞͷʮಘҙʯ͝ͱʹνʔϜ͕෼͔ΕΔ
    w αʔϏεͷ෼ׂ
    w γεςϜͷʮམͪͨΒϚδͰϠόΠʯϨϕϧ͝ͱʹɺϦϦʔ εͷαΠΫϧ΍ϑϩʔΛ෼͚ΒΕΔ
    w ίϯϓϥΠΞϯεཁ݅΋αʔϏε͝ͱʹద༻Λ෼͚ΒΕΔ
13. ݱࡏͷߏ੒ (Ұ෦ൈਮɺ·ͨઆ໌ͷͨΊʹ؆ૉԽͯ͠·͢)
14. CloudFront 8FC
    GSPOU DC(ΦϯϓϨ) ূ݊؅ཧ
    αʔϏε ޱ࠲؅ཧ
    αʔϏε %# 41
    "QQ
    "1* ϢʔβೝূαʔϏε ܖ໿ॻ؅ཧαʔϏε ೖۚɾੵཱॲཧαʔϏε ఏܞۜߦ޲͚"1* ೖग़ۚ؅ཧDB ܖ໿ॻ؅ཧDB ౳ʑ… ܖ໿ॻS3 ఏܞઌாථ ౳ʑ… Firebase AuthN ূ݊όοΫΦϑΟεγεςϜ(֎෦) ূ݊ϒϩʔΧʔ(ূ݊ങ͍෇͚౳) ౳ʑ…
15. • 2017೥1݄ʹ୤ΦϯϓϨ࣌ʹಋೖ • ຊ൪؀ڥ͸AWSʹKubernetesΛߏங • ։ൃ؀ڥ͸GKEΛαΫοͱར༻ • SREͷෛ୲(ͭ·Γࢲͷ࢓ࣄ)ΛݮΒͨ͢Ίʂʂ
16. SREͷ࢓ࣄΛݮΒ͢ • Kubernetes্ͷϦιʔε͸ݪଇɺYAMLϑΝΠϧͰ ϦϙδτϦ؅ཧ͍ͯ͠Δ • มߋه࿥Λ࢒͢͜ͱ͸؂ࠪతʹ΋ॏཁ • SREҎ֎Ͱ΋Πϯϑϥߏ੒͕ϑΝΠϧΛݟΕ͹͍ͩ ͍ͨ෼͔Δ • SREҎ֎Ͱ΋αʔϏε௥ՃͷͨΊͷYAMLΛॻ͚Δ
17. ৽͘͠αʔϏε૿΍͔ͨ͠Β
    αʔόͱ͔४උͯ͠ཉ͍͠Μ͚ͩͲʂʂ ͱΓ͋͑ͣԼهͷϑΝΠϧॻ͍ͯJOGSB ϦϙδτϦʹϓϧϦΫΤετ͓ͬͯ͘
    w %PDLFSpMF
    w ,VCFSOFUFT
    ͷϦιʔεఆٛ :".-
    w %FQMPZNFOU
    w 4FSWJDF SRE ͳΘͨ͠ αʔϏεΛ૿΍͢ͱ͖ ೑৯ܥঁࢠͳ αʔόαΠυΤϯδχΞ
18. ϑΝΠϧॻ͍ͨʂʂʂ
    ϓϧϦݟͯʂʂʂʂʂʂʂʂʂʂ -(5.͔ͳʙ
    BQQMZ͓ͯ͘͠Θʙʙ αʔϏεΛ૿΍͢ͱ͖ ೑৯ܥঁࢠͳ αʔόαΠυΤϯδχΞ SRE ͳΘͨ͠
19. SREͷ࢓ࣄΛݮΒ͢ w ग़དྷΔݶΓ
    *OGSB
    BT
    $PEF
    ͢Δ
    w 3PVUF
    $MPVE'SPOU
    *".
    %#
    4DIFNBʜ
    w ΄ͱΜͲ
    DPEFOJ[FUPPMT
    ͷ͓͔͛ɻ࠷ߴɻ
    w มߋ͢Δ࣌͸ɺجຊతʹϓϧϦΫΤετΛ΋Β͏ɻ
    w ྫ͑͹*".Ͱݖݶ෇͚ͯཉ͍࣌͠ͱ͔͸ͦͷਓʹ ௚઀ϓϧϦΫΤετ΋Β͏
20. SREͷ࢓ࣄΛݮΒ͢ w αʔϏεͷσϓϩΠ͸4MBDL͔ΒCPUʹґཔ
    w CPU SVCPUZ ͸%JHEBHʹஔ͍ͯ͋Δσϓϩ ΠͷλεΫΛΩοΫ͢Δ
    w ϩά͸શ෦$MPVE8BUDI
    MPHTʹू໿͍ͯ͠ ͯɺجຊతʹ୭Ͱ΋ݟΕΔ
21. ͜͜·Ͱͷ·ͱΊ • THEO ͸ Microservice ԽΛਐΊ͍ͯ·͢ • αʔϏε͝ͱͷ҆ఆੑͷج४΍ɺϦϦʔεαΠΫϧ • Microservice ͸ Kubernetes Ͱࢧ͑Δ • αʔϏε͕ଟ͍ͱSREࢮʹͦ͏ʹͳΔͷͰ͍͔ʹ ͯ͠࢓ࣄΛݮΒ͔͕͢ॏཁ
22. Ͱ͸ɺ ͲͷΑ͏ʹ֤αʔϏεΛ ͭͳ͍Ͱ͍Δ͔
24. ͦ΋ͦ΋RPCͬͯ…?
25. RPC > Remote procedure call is the synchronous language-level transfer of control between programs in disjoint address spaces whose primary communication medium is a narrow channel. ଞͷΞυϨεۭؒʹ͋ΔॲཧΛ࣮ߦ͢Δ͜ͱ #SVDF
    +BZ
    /FMTPO
    
    3FNPUF
    1SPDFEVSF
    $BMM
    IUUQTEMBDNPSHDJUBUJPODGN JE
26. RPC as HTTP API APIͷઃܭํ਑ σʔλͷදݱܗࣜ JSON, XML, Protocol Buffers, … REST, RPC, … ,
    .BUTVNPUP
    
    lH31$ͱ1SPUPDPM#V⒎FSTͰҰຯҧ͏"OESPJE௨৴z
    %SPJE,BJHJ
    
    IUUQTTQFBLFSEFDLDPNLNBUTQSPUPCVG
27. RPC as HTTP API APIͷઃܭํ਑ σʔλͷදݱܗࣜ JSON, XML, Protocol Buffers, … REST, RPC, … ,
    .BUTVNPUP
    
    lH31$ͱ1SPUPDPM#V⒎FSTͰҰຯҧ͏"OESPJE௨৴z
    %SPJE,BJHJ
    
    IUUQTTQFBLFSEFDLDPNLNBUTQSPUPCVG
28. REST vs RPC as HTTP API • ҧ͍ͷ1ͭ:ʮAPIઃܭ࣌ʹͲ͜ʹண໨͢Δ͔ʯ • Ϧιʔεʢૢ࡞ର৅ʣͱΞΫγϣϯʢૢ࡞ํ ๏ʣΛͲ͏΍ͬͯදݱ͢Δ͔ • REST: ϦιʔεΛத৺ʹߟ͑Δ • RPC: ΞΫγϣϯΛத৺ʹߟ͑Δ ,
    .BUTVNPUP
    
    lH31$ͱ1SPUPDPM#V⒎FSTͰҰຯҧ͏"OESPJE௨৴z
    %SPJE,BJHJ
    
    IUUQTTQFBLFSEFDLDPNLNBUTQSPUPCVG
29. RESTͷํ͕޲͍͍ͯΔέʔε • e.g. ϒϩάαʔϏεͷAPI • APIͷओͳ໾ׂ͸ϒϩάهࣄʹରͯ͠CRUD ૢ࡞Λ͢Δ͜ͱ • هࣄͱ͍͏ϦιʔεΛத৺ʹߟ͑ͨํ͕ྑ͍ • ΞΫγϣϯ͸HTTPϝιουͰදݱ https://www.smashingmagazine.com/2016/09/understanding-rest-and-rpc-for-http-apis/
30. ϒϩάAPI: RESTͷ৔߹ • Create: • POST https://example.com/api/articles • body: {“title”: “New post”, “author”: “John”, “description”: “…”} • Read: • GET https://example.com/api/articles/123 • Update: • PATCH https://example.com/api/articles/123 • body: {“title”: “Revised”} • Delete: • DELETE https://example.com/api/articles/123 https://www.smashingmagazine.com/2016/09/understanding-rest-and-rpc-for-http-apis/
31. ϒϩάAPI: RPCͷ৔߹ • Create: • https://example.com/api/createArticle • body: {“title”: “New post”, “author”: “John”, “description”: “…”} • Read: • https://example.com/api/getArticle • Update: • https://example.com/api/updateArticle • body: {“article_id”: 123, “title”: “Revised”} • Delete: • https://example.com/api/deleteArticle https://www.smashingmagazine.com/2016/09/understanding-rest-and-rpc-for-http-apis/
32. RPCͷํ͕޲͍͍ͯΔέʔε • e.g. SlackͷΑ͏ͳνϟοταʔϏεͷAPI • APIΛ௨ͯ͡ҎԼͷػೳΛఏڙ͍ͨ͠ͱ͢Δ • ͋Δνϟϯωϧʹ͍ΔϢʔβ͕νϟϯωϧ͔Βୀग़ ͢Δ (leave) • ͋Δνϟϯωϧʹ͍ΔϢʔβΛνϟϯωϧ͔Β௥͍ ग़͠ɺ࠶ࢀՃΛې͡Δʢkickʣ https://www.smashingmagazine.com/2016/09/understanding-rest-and-rpc-for-http-apis/
33. νϟοτAPI: RESTͷ৔߹ • leaveͱkickͷҧ͍Λ៉ྷͳRESTͰදݱ͢Δͷ͕೉͍͠ • e.g. bodyʹԿ͔͠Βͷ৘ใΛ௥Ճ͢Δ౳ͷ޻෉͕ඞཁ • leave: • PATCH https://example.com/api/channels/123/users/456 • body: {“status”: “left”} • kick: • PATCH https://example.com/api/channels/123/users/456 • body: {“status”: “kicked”} https://www.smashingmagazine.com/2016/09/understanding-rest-and-rpc-for-http-apis/
34. νϟοτAPI: RESTͷ৔߹ • ҎԼͷΑ͏ʹ͢ΔͱRESTͱRPCͷதؒͷΑ͏ͳ΋ͷʹͳͬͯ͠·͏ • leave: • POST https://example.com/api/channels/123/users/456/leave • kick: • POST https://example.com/api/channels/123/users/456/kick https://www.smashingmagazine.com/2016/09/understanding-rest-and-rpc-for-http-apis/
35. νϟοτAPI: RPCͷ৔߹ • leave: • https://example.com/api/leaveFromChannel • body: {“channel_id”: 123, “user_id”: 456} • kick: • https://example.com/api/kickFromChannel • body: {“channel_id”: 123, “user_id”: 456} https://www.smashingmagazine.com/2016/09/understanding-rest-and-rpc-for-http-apis/
36. Slackͷweb API͸RPC > The Web API is a collection of HTTP RPC-style methods, all with URLs in the form `https://slack.com/api/METHOD_FAMILY.method`. https://api.slack.com/web Web API͸HTTP RPCελΠϧͷϝιουͷू·ΓͰ͋ΓɺશͯҎ ԼͷϑΥʔϜͰද͞Ε·͢ɻ `https://slack.com/api/METHOD_FAMILY.method`.
38. gRPC • Google͕։ൃΛ࢝ΊͨΦʔϓϯιʔεͷRPCϑϨʔϜϫʔΫ • ݩ͸Googleࣾ಺ͷϚΠΫϩαʔϏεΛͭͳ͛ΔͨΊʹ10 ೥Ҏ্࢖ΘΕ͍ͯͨRPCϑϨʔϜϫʔΫ”Stubby” • HTTP/2 • ૒ํ޲ετϦʔϛϯά • ެࣜʹ͸RubyؚΊ10ݴޠʹରԠ https://grpc.io/blog/principles
39. gRPCͷσʔλදݱܗࣜ • σϑΥϧτͰ͸Protocol Buffers (Protobuf) • C++ͱGoͰ͸FlatBuffers΋αϙʔτ͞Εͯ ͍Δͱͷ͜ͱ • ଞͷϑΥʔϚοτ΋ٕज़తʹ͸ରԠՄೳ https://grpc.io/blog/flatbuffers https://grpc.io/faq/
40. grpc-gateway: gRPC/ProtobufͱREST/JSONΛม׵ https://github.com/grpc-ecosystem/grpc-gateway
41. Protocol Buffers?
42. Protocol Buffers (Protobuf) • XML౳ͷΑ͏ʹߏ଄Խ͞Εͨσʔλදݱܗࣜɺ ͳ͍͠͸IDL (Interface Description Language) • ݱࡏͷ࠷৽͸ver.3 (proto3) > think XML, but smaller, faster, and simpler. https://developers.google.com/protocol-buffers/docs/overview
43. .protoϑΝΠϧ syntax = "proto3"; message Bank { int32 code = 1; string name = 2; string name_kana = 3; } https://developers.google.com/protocol-buffers/docs/overview
44. Protobufͱ͸ • .protoϑΝΠϧΛαʔόɾΫϥΠΞϯτؒͰڞ༗ • Protobuf compilerʹΑͬͯ.protoϑΝΠϧ͔ΒγϦΞϥΠζɾ σγϦΞϥΠζ༻ͷΫϥε͕ੜ੒͞ΕΔ • όΠφϦʹΤϯίʔυͯ͠ૹ৴ • JSON΁Τϯίʔυ͢Δ͜ͱ΋Մ(ͨͩ͠gRPCͰ͸ະαϙʔτ) • ެࣜɾαʔυύʔςΟ߹Θͤͯ10छྨҎ্ͷݴޠʹରԠ https://developers.google.com/protocol-buffers/docs/overview
45. ഑ྻͱmessageͷೖΕࢠ message GetBanksResponse { repeated Bank bank = 1; } message Bank { int32 code = 1; string name = 2; string name_kana = 3; } https://developers.google.com/protocol-buffers/docs/overview
46. Enum enum BankAccountType { SAVING = 0; // ී௨ CHECKING = 1; // ౰࠲ } https://developers.google.com/protocol-buffers/docs/overview
47. Enum enum BankAccountType { option allow_alias = true; SAVING = 0; // ී௨ CHECKING = 1; // ౰࠲ CURRENT = 1; // ౰࠲ʢผ໊ʣ } https://developers.google.com/protocol-buffers/docs/overview
48. @Deprecated message Bank { int32 code = 1; string name = 2; string name_kana = 3 [deprecated=true]; string name_katakana = 4; } https://developers.google.com/protocol-buffers/docs/overview
49. RPC service BankListService { rpc GetBanks (GetBanksRequest) returns (GetBanksResponse); } message GetBanksRequest {} message GetBanksResponse { repeated Bank bank = 1; } https://developers.google.com/protocol-buffers/docs/overview
50. ProtobufͷϝϦοτ w ܕ͕͋Δ
    w ෳ਺ݴޠͰ࿈ܞ͢ΔαʔϏεͩͱ͜Ε͕ΊͪΌͪ͘Όେ͖͍
    w NFTTBHFʹ૬౰͢ΔΫϥε͕ࣗಈੜ੒͞ΕΔͷͰࣗ෼Ͱॻ͘ඞཁ ͕ͳ͍
    w ҧ͏νʔϜͷ։ൃऀͱ΋ίϛϡχέʔγϣϯ͠΍͍͢
    w QSPUPϑΝΠϧ͕ͦͷ··࢓༷ʹͳΔ
    w QSPUPϑΝΠϧ͕؆қͳͷͰཉ͍͠Ϋϥε΍"1*͕͋ͬͨΒQSPUP ϑΝΠϧΛॻ͍ͯ13ΛૹΕ͹ྑ͍
51. ProtobufͷσϝϦοτ w όΠφϦͰ௨৴͞ΕΔͷͰIVNBO
    SFBEBCMFͰ͸ͳ͍
    w DVSM
    ͱ͔Ͱγϡοͱ֬ೝ͢Δͷݫ͍͠
    w ͪΌΜͱ௨৴Ͱ͖͍ͯΔ͔Ͳ͏͔Λ֬ೝ͢ ΔͨΊʹ؆୯ͳΫϥΠΞϯτΛॻ͍͓ͯ͘ ඞཁ͕͋Δ
52. ͜͜·Ͱͷ·ͱΊ w H31$͸(PPHMFൃͷ31$ϑϨʔϜϫʔΫ
    w )551
    ૒ํ޲ετϦʔϛϯάͳͲ
    w σϑΥϧτͰ͸1SPUPCVGͱҰॹʹ࢖͏
    w 1SPUPDPM
    #V⒎FST͸ߏ଄Խ͞Εͨσʔλදݱܗࣜͳ͍͠ ͸*%-
    *OUFSGBDF
    %FTDSJQUJPO
    -BOHVBHF
    w QSPUPϑΝΠϧΛॻ͍ͯαʔόɾΫϥΠΞϯτؒͰڞ༗
    w Ϧονͳදݱྗ
53. THEO ὑ gRPC
54. THEO ὑ gRPC • εϚϗΞϓϦͱAPIαʔόؒ͸gRPC • ࣾ಺ͷ֤αʔϏεؒͷ௨৴͸ݪଇgRPCͰߏஙத • (ͪͳΈʹ࠷ۙ͸ࣾ಺Ͱ͸Go+gRPCͰ࡞Δ͜ͱ΋) • ࣾ಺ͷطଘαʔϏε΋ग़དྷΕ͹gRPCʹ͍͖͍ͯͨ͠ • Rails੡ͷαʔϏε΋͋ΔͷͰɺ͜Ε΋gRPCʹ͍ͨ͠
55. Rails Ͱ΋ gRPC ΍͍͖ͬͯ
56. खॱ 1.gRPCͱProtobufΛΠϯετʔϧ͢Δ 2.Ϗϧυ࣌ʹProtobuf͔ΒίʔυΛࣗಈੜ੒͢ΔλεΫΛॻ͘ 3.protoϑΝΠϧΛॻ͘ 4.protoϑΝΠϧΛίϯύΠϧ(protoc)ͯ͠ίʔυੜ੒ 5.ΞϓϦ಺Ͱੜ੒͞ΕͨίʔυΛ࢖͏
57. ࠓճ͸ “͓͍͞;αʔϏε” Λ ྫʹߟ͑ͯΈ·͠ΐ͏ 6TFS
    ✦
    OBNF
    <TUSJOH> 8BMMFU
    ✦
    VTFS@JE
    <JOUFHFS> 1BZNFOU
    ✦
    XBMMFU@JE
    <JOUFHFS>
    ✦
    BNPVOU
    <JOUFHFS>
    ✦
    UBSHFU
    <TUSJOH>
    ✦
    SFBTPO
    <TUSJOH> 1 1 1 n
58. αϯϓϧίʔυ͸ԼهͰެ։ github.com/cnosuke/bank_sample
59. DB Schema github.com/cnosuke/bank_sample/blob/master/Schemafile
60. bank.protoϑΝΠϧ (message෦෼) github.com/cnosuke/bank_sample/blob/master/proto/bank.proto
61. bank.protoϑΝΠϧ (RPC෦෼) github.com/cnosuke/bank_sample/blob/master/proto/bank.proto
62. .protoϑΝΠϧͷίϯύΠϧ ͪͳΈʹ͜ͷ `protoc` ͸rakeλεΫͱ͔ʹͨ͠ํָ͕Ͱ͢
63. app/models/payment.rb
64. app/models/wallet.rb
65. RPCͷ࣮૷Λॻ͘ • جຊతʹ͸ϩʔυͰ͖Ε͹(ํ๏͸ޙड़)ɺ Ͳ͜ʹஔ͍ͯ΋OKɻ • ݸਓతͳ͓קΊ͸ app/grpc/wallet_service.rb
66. .proto ͷ RPC෦෼ (࠶ܝ) github.com/cnosuke/bank_sample/blob/master/proto/bank.proto
67. RPCͷ࣮૷ (GetByUserID) github.com/cnosuke/bank_sample/blob/master/app/grpc/wallet_service.rb
68. RPCͷ࣮૷ (AddPayments) github.com/cnosuke/bank_sample/blob/master/app/grpc/wallet_service.rb
69. ຊ࣭తͳͱ͜Ζ͸͜Ε͚ͩ ҙ֎ͱαούϦʂʂʂ
70. ͋ͱ͸ɺαʔόͱͯ͠ ಈ͔ͨ͢Ίͷॾʑ…
71. config/initializers/grpc_init.rb github.com/cnosuke/bank_sample/blob/master/config/initializers/grpc_init.rb
72. grpc_server.rb github.com/cnosuke/bank_sample/blob/master/grpc_server.rb
73. ಈ͔ͯ͠ΈΔ (αʔό)
74. ಈ͔ͯ͠ΈΔ (ΫϥΠΞϯτ) github.com/cnosuke/bank_sample/blob/master/sample_client/client.rb
75. ಈ͔ͯ͠ΈΔ (ΫϥΠΞϯτ) github.com/cnosuke/bank_sample/blob/master/sample_client/client.rb
76. ͍͍ͩͨಈ͍ͨ • ·ͩ Proof of Concept ͱ͍͏ײ͡ • Ϛϧνϓϩηε۩߹ʹෆ҆ • ཁݕূɻGVLͱ͔͋ΔͷͰͲ͏ͳΔ͔Θ͔ΒΜɻ • treasure-data/serverengine ࢖͏ͱྑ͍ؾ͕ͯ͠ ͍Δ
77. ·ͱΊ • THEO ͸ Microservice ԽΛؤுͬͯ·͢ɻ • ෼ׂͭͭ͠ɺ΋ͱ΋ͱ෼͔Ε͍ͯΔαʔϏεΛ gRPC ʹ͠ ͍͖͍ͯͨɻ • Rails ͷطଘαʔϏε΋౰વ gRPC ʹ͍ͨ͠ɻ • ࠓճ͸ PoC Λ࡞ͬͨɻ • ࠓޙݕূͭͭ͠ຊ൪౤ೖ͢Δͭ΋ΓͰ͢ɻ
78. Thank you (ͬʼ⌄ʻc) We’re hiring! www.money-design.com/jobs