東急ハンズの P2Pレジ間通信2018

at iOSDC Japan 2018

東急ハンズのレジは内製開発のiPadアプリで動いています。
そんなレジ用アプリはアプリ間で様々な情報を交換しています。

レジ間を飛び交う通信内容や通信方式の現在に至るまでの変遷を紹介します。

Transcript

1. ౦ٸϋϯζͷ
   P2PϨδؒ௨৴2018
   9/1 iOSDC Japan 2018
   taiki komaba(@r_plus)
   

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2. UBJLJLPNBCB
   !S@QMVT
   
   )"/%4-"#*/$
   

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3. HandsPOS
   

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4. ▸ ౦ٸϋϯζͷϨδͱͯࣗࣾ͠։ൃ͍ͯ͠ΔiPadΞϓϦ
   ▸ ैۀһૢ࡞༻ͱΧελϚʔ༻ͷ2Ϟʔυ
   ▸ 1୆ͷϨδʹ͖ͭ1ηοτ
   ▸ ͜ͷैۀһଆͱΧελϚʔଆͰP2P௨৴
   HandsPOS
   

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5. before
   after
   

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6. 2015/12
   2016
   2017
   2018
   2019
   HandsPOS
   

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7. 2015/12
   2016
   2017
   2018
   2019
   85%
   
   ಋೖ׬ྃ
   HandsPOS
   

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8. 2015/12
   2016
   2017
   2018
   2019
   2020
   ফඅ૿੫
   HandsPOS
   

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9. Multipeer
   connectivity
   P2P
   

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10. Multipeer Connectivity
    ΧελϚʔଆ(C)
    ैۀһଆ(P)
    .VMUJQFFS
    $POOFDUJWJUZ
    0001Ϩδ
    

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11. ΧελϚʔଆ(C)
    ैۀһଆ(P)
    .VMUJQFFS
    $POOFDUJWJUZ
    0001Ϩδ
    Multipeer Connectivity
    - औҾ৘ใ (঎඼৘ใɺׂҾ৘ใɺࢧ෷͍৘ใetc)
    ૹ৴৘ใ
    

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12. 2015/12
    2016
    2017
    2018
    2019
    औҾ৘ใ(P2C)
    HandsPOS
    

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13. 2015/12
    2016
    2017
    2018
    2019
    औҾ৘ใ(P2C)
    HandsPOS
    Ϋ
    Ϩ
    δ
    ο
    τ
    ಋ
    ೖ
    ΫϨδοταΠϯཁٻ(P2C)
    ΫϨδοταΠϯը૾(C2P)
    

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14. 2015/12
    2016
    2017
    2018
    2019
    औҾ৘ใ(P2C)
    HandsPOS
    Ϋ
    Ϩ
    δ
    ο
    τ
    ಋ
    ೖ
    ΫϨδοταΠϯཁٻ(P2C)
    ΫϨδοταΠϯը૾(C2P)
    όοςϦʔ৘ใ(C2P)
    

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15. όοςϦʔ
    ▸ ϨδͳͷͰৗ࣌ॆిঢ়ଶ
    ▸ ͳͷͰॆిʹ͸࠷ॳؾΛ࢖͍ͬͯͳ͔ͬͨ
    ▸ ిѹͳͷ͔Կͳͷ͔ݪҼڀ໌͍ͯ͠ͳ͍͕
    ॆి͞Εͳ͍έʔε͕ଟʑൃੜ
    ▸ ΞϓϦέʔγϣϯଆͰόοςϦʔ࢒͕গͳ
    ͘ͳ͖ͬͯͨΒ(30%)஫ҙΛଅ͢Ξϥʔτ
    Λදࣔ
    

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16. ͱ͋Δ೔ͷόοςϦʔਪҠ
    30%
    

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17. ༗ઢ
    

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18. ༗ઢ
    ͪΐͬͱͰ΋ॆిঢ়ଶ
    Ͱ͸ͳ͘ͳΔͱɾɾɾ
    

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19. ༗ઢ
    NICফ໓
    lo0 ←ϧʔϓόοΫ
    en0 ← WiFi
    en3 ← Ethernet
    

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20. MultipeerConnectivityͷ໰୊఺
    

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21. ઀ଓੑ͕
    ͋·Γྑ͘ͳ͍
    

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22. MultipeerConnectivity໰୊
    ▸ ͭͳ͕Δ࣌͸εοͱͭͳ͕Δ
    ▸ ͭͳ͕ͬͯΔ࣌͸௕࣌ؒͷ઀ଓͰ΋໰୊ͳ͍
    ▸ ͕ɺμϝʹͳΔͱେମͣͬͱμϝʹͳΔ
    ▸ μϝʹͳ͍ͬͯΔ࣌Ͱ΋Web઀ଓ͸ਖ਼ৗ
    ▸ ͓ޓ͍ͷΞϓϦΛ࠶ىಈ͢Δͱେମͳ͓ΔʢTipsʣ
    ▸ ·͊BonjourͰ͢͠
    

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23. 2015/12
    2016
    2017
    2018
    2019
    औҾ৘ใ(P2C)
    HandsPOS
    Ϋ
    Ϩ
    δ
    ο
    τ
    ಋ
    ೖ
    ΫϨδοταΠϯཁٻ(P2C)
    ΫϨδοταΠϯը૾(C2P)
    όοςϦʔ৘ใ(C2P)
    

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24. 2015/12
    2016
    2017
    2018
    2019
    औҾ৘ใ(P2C)
    HandsPOS
    Ϋ
    Ϩ
    δ
    ο
    τ
    ಋ
    ೖ
    ΫϨδοταΠϯཁٻ(P2C)
    ΫϨδοταΠϯը૾(C2P)
    όοςϦʔ৘ใ(C2P)
    ηϛηϧϑํࣜϨδ
    

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25. ηϛηϧϑ
    Ϩδ
    

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26. ηϛηϧϑϨδ
    ▸ εʔύʔʹΑ͋͘Δํࣜ
    ▸ ঎඼εΩϟϯͳͲ͸ैདྷͲ͓Γैۀһ͕࣮ࢪ
    ▸ ࢧ෷͍෦෼Λઐ༻୺຤ʹ͓ͯ٬༷ࣗ਎ʹߦ͍ͬͯͨͩ͘
    

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27. ৽॓ళ8Fʹͯల։
    

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28. ηϛηϧϑϨδ
    ▸ εʔύʔʹΑ͋͘Δํࣜ
    ▸ ঎඼εΩϟϯͳͲ͸ैདྷͲ͓Γैۀһ͕࣮ࢪ
    ▸ ࢧ෷͍෦෼Λઐ༻୺຤ʹ͓ͯ٬༷ࣗ਎ʹߦ͍ͬͯͨͩ͘
    - ঎඼εΩϟϯetc
    औҾσʔλૹ৴
    - ࢧ෷͍
    - ݱۚ
    - ΫϨδοτ
    - ిࢠϚωʔ
    ਫ਼ࢉػ(ෳ਺)
    

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29. ηϛηϧϑϨδʹ޲͚ͯ
    ߴ৴པͷ11௨৴ํ͕ࣜඞཁ
    

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30. ηϛηϧϑ༻ɹ৽௨৴ํࣜ
    ▸ N:NͰͷ௨৴Λ૝ఆ
    ▸ MultipeerConnectivity(ҎԼMC)Ͱ઀ଓͰ͖ͳ͍࣌Ͱ΋Web઀ଓ͸ੜ͖͍ͯͨ
    ▸ ΦϯϥΠϯܦ༝ͳΒΠέϧ
    ▸ MC͸εςʔτϑϧͳͷ͕΍΍͍͜͠ݪҼɾɾ͔΋ʁ
    ▸ εςʔτϨε
    ▸ ͱ͸͍͑ɺϨδͳͷͰΦϑϥΠϯͰͷՔಇ΋ߟྀ
    ▸ ΦϯϥΠϯܦ༝ͷ΋ͷ͸ಈ࡞͠ͳ͍
    ▸ ΦϑϥΠϯಈ࡞Ͱ͸MC͸ྑཱ͍ͪҐஔ
    ▸ Ͱ͋Ε͹ෳ਺ͷ௨৴ํࣜΛଋͶΔΑ͏ͳ΋ͷɾɾɾ
    

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31. Swallow
    ௨৴ϥΠϒϥϦ
    

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32. Swallow
    ▸ ֤௨৴͸pluginํࣜ
    ▸ εςʔτϨε/ϑϧ͸໰Θͳ͍
    ▸ ಉҰ௨৴಺༰͸ૣ͍΋ͷউͪ
    ▸ εςʔτϨε΋ؚ·ΕΔͷͰड͚औΓΛද໌͢ΔAckΛฦ
    ٫͢Δ
    

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33. Swallow
    ※͜ͷ৔߹ͷOffline͸ΦϑϥΠϯͰ௨৴Մೳ͔Ͳ͏͔
    MQTT͸LANʹαʔό͕͋Δ૝ఆ
    http͸ΞϓϦ಺ʹwebαʔόػೳͷ౥ࡌ
    ํࣜ State Offline
    Multipeer Full Yes
    http Less Yes
    AWS SQS Less No
    Firestore Auto No
    RealmCloud Auto No
    MQTT Full Yes
    AWS IoT - No
    ࠾༻
    ✓
    ✓
    

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34. Swallow
    Core
    Multipeer
    Client
    http
    AWS SQS
    Core
    Multipeer
    Client
    http
    AWS SQS
    FCFS
    औҾ
    σʔλ
    

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35. Swallow
    Core
    Multipeer
    Client
    http
    AWS SQS
    Core
    Multipeer
    Client
    http
    AWS SQS
    Ack
    

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36. Multipeer, AWS SQS rate
    ઌணͨ͠Clientͷൺ཰
    ●Multipeer
    ●AWS SQS
    ▸ Αͯ͘൒ʑ
    ▸ ଟ͍΋ͷ͸9ׂ͕SQS
    ▸ MultipeerϨΠςϯγ͸ߴ
    ଎ɻ઀ଓͰ͖͍ͯΕ͹͜
    ͪΒ͕ؒҧ͍ͳ͘ઌணɻ
    

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37. 2015/12
    2016
    2017
    2018
    2019
    औҾ৘ใ(P2C)
    HandsPOS
    Ϋ
    Ϩ
    δ
    ο
    τ
    ಋ
    ೖ
    ΫϨδοταΠϯཁٻ(P2C)
    ΫϨδοταΠϯը૾(C2P)
    όοςϦʔ৘ใ(C2P)
    ηϛηϧϑํࣜϨδ
    

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38. 2015/12
    2016
    2017
    2018
    2019
    औҾ৘ใ(P2C)
    HandsPOS
    Ϋ
    Ϩ
    δ
    ο
    τ
    ಋ
    ೖ
    ΫϨδοταΠϯཁٻ(P2C)
    ΫϨδοταΠϯը૾(C2P)
    όοςϦʔ৘ใ(C2P)
    SwallowʹΑΔ
    N:N௨৴
    

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39. ·ͱΊ
    ▸ MultipeerConnectivity͸ॴḨBonjour
    ▸ ͚ΕͲAPͳ͠ͰͷWiFi઀ଓ(peer-to-peer Wi-Fi)͕Մೳ
    ▸ ΦϯϥΠϯͰͷ௨৴Ͱิॿ
    ▸ ͭͳ͕Δ࣌͸MutipeerConnectivityͷϨΠςϯγʔ͕଎͍
    ▸ શମͰΈΔͱѹ౗తʹΦϯϥΠϯ௨৴ͰٹΘΕ͍ͯΔ
    ▸ 8݄಄ͷ౦ژϦʔδϣϯSQSͷো֐࣌͸؊Λྫྷ΍ͨ͠
    ▸ FIFOΩϡʔʹ͍ͨ͠
    

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40. ͓ΘΓ
    

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