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αʔόϨεΞʔΩςΫνϟͷ Ξϯνύλʔϯͱ׆༻ํ๏

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͜ΜͳΜॻ͍ͯ·͢

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ࠓ೔࿩͢͜ͱ • αʔόϨεΞʔΩςΫνϟͷΞϯνύλʔϯͱ ղܾํ๏ • ৬ۀฑAWSͷαʔϏεத৺Ͱ͕͢ɺ
 ॴʑAWSʹґଘͯ͠ͳ͍Tips΋͋Γ·͢

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ࠓ೔࿩͞ͳ͍͜ͱ • αʔόϨεΞʔΩςΫνϟͬͯͳʹʁ

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ର৅ • αʔόϨεͬͯݴ༿͸஌ͬͯΔ͚Ͳɾɾ • ͱΓ࣮͋͑ͣ૷ͯ͠Έ͚ͨͲɾɾ • Έ͍ͨͳਓΛର৅ʹ͍ͯ͠·͢ • ώϯτΛ࣋ͪؼͬͯ΋Β͑Ε͹ͱࢥ͍·͢

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ຊ୊

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1. ʮSDKΛ࢖ΘͣσʔλΛ౤͛Δʯ • SDKΛ࢖ΘͣʹΫϥΠΞϯτ͔ΒAWSαʔϏεʹϦΫΤετ Λ౤͛Δ AWS Lambda Amazon API Gateway mobile client Amazon DynamoDB

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• Ϋϥ΢υͱ͍ͬͯ΋෺ཧͰಈ͍͍ͯΔ • ࢭ·Βͳ͍γεςϜ͸ଘࡏ͠ͳ͍ • SDK͸Ϋϥ΢υ͕ࢭ·ΔલఏͰϦτϥΠॲཧͱ͔͕૊Έࠐ·Ε͍ͯΔɻՄೳͳݶΓSDKΛ࢖͏ • SDKΛ࢖Θͳ͍৔߹͸ɺ૬ख͕ड͚औΕͳ͔ͬͨ৔߹Λ૝ఆͯ͠ϦτϥΠ͢Δ
 ॲཧΛೖΕΑ͏ɻϦτϥΠʹΑΓޙʹ੒ޭ͢ΔՄೳੑ͕ߴ͍ • ϦτϥΠॲཧͷਪ঑͸ɺΫϥΠΞϯτଆ͸ʮExponential Backoffʯ͕ਪ঑ɻ
 Lambdaʹؔͯ͠͸ʮDead Letter QueueʯΛར༻͢Δ • Exponential Backoff • σʔλૹ৴ॲཧ͕ࣦഊͯ͠࠶ૹ৴͢Δͱ͖ʹɺࣦഊճ਺͕૿͑Δʹ࿈Εͯ
 ࠶ૹ৴͢Δ·Ͱͷ଴ͪ࣌ؒΛࢦ਺ؔ਺తʹ૿΍͢࢓૊Έ
 ʢྫɿ̍ඵޙɺ̎ඵޙɺ̐ඵޙɺ̔ඵޙɺɺɺʣ • ௕ظো֐ൃੜ࣌ʹγεςϜ΁ͷෆඞཁͳෛ୲Λܰݮ • Dead Letter Queue • ࣮ߦࣦഊ࣌ (3ճϦτϥΠࣦഊ࣌) ʹSQS͔SNSʹ౤͛ΕΔػೳ • SQSʹಥͬࠐΜͩޙʹΰχϣΰχϣ͢Δ SDK͸͔͍͜͠ɻՄೳͳݶΓSDKΛ

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2. ʮͱΓ͋͑ͣLambda FirstͰʯ multimedia Amazon SQS Amazon SNS AWS IoT AWS Lambda Amazon API Gateway mobile client AWS Lambda AWS Lambda AWS Lambda AWS Lambda AWS Lambda

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Lambdaͷํ͕͓ߴ͍৔߹΋͋Δ • 256MBͷϝϞϦͰ1,500ສճ࣮ߦ͠ຖճͷ࣮ߦ͕࣌ؒ200ϛϦඵͩͬͨ৔߹ͷར ༻ྉ͸ɺ໿$11 • ্͕Ծʹຖ೔࣮ߦ͢ΔΑ͏ͳॲཧͷ৔߹ɺ$11*30೔Ͱ$330 • ༻్ʹΑͬͯ͸Lambdaͷํ͕ߴ͘ͳΔ৔߹΋͋Δ • Ͱ΋EC2ͷӡ༻͕ແ͘ͳΔͷͰอकͷରԠ޻਺͕ݮΔ͠ɺϝϦοτ΋େ͍ʹ͋Δ ʢ͠ɺ΍ͬͯΈ͍ͨ͡ΌΜʣ • ॲཧྔ͕ଟ͍৔߹͸ܰ͘ݟੵΖ͏ • ͋ͱɺଟ਺ͷLambdaΛ࢖ͬͯ΋͍͍͕Lambdaͷಉ࣮࣌ߦ਺੍ݶʢ100/secʣ͸ ΞΧ΢ϯτ୯ҐͳͷͰɺ্ݶʹ஫ҙ

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3. ʮॏ͍ͨόον΋LambdaͰʯ AWS Lambda Amazon CloudWatch

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Lambda͸ॲཧ࣌ؒʹݶΓ͕͋Δ • Lambda = ࠷௕5෼͔ؒ͠ॲཧͰ͖ͳ͍ • 5෼Ҏ্͔͔Δ৔߹͸ผͷLambdaʹॲཧΛྲྀ͢ • SQS΍DynamoDBɺs3ͳͲΛؒʹڬΈLambda ͷॲཧΛ෼͚Δ • StepFunction΋׆༻͠Α͏

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4. ʮAPI GatewayͰॏ͍ͨॲཧʯ AWS Lambda Amazon API Gateway mobile client

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API Gateway͸Timeout͢Δ • API GatewayͷλΠϜΞ΢τ͸30ඵ • 30ඵҎ಺ʹAPI GatewayʹॲཧΛฦ͢ඞཁ͋Γ • ·ͣɺϑϩϯτͷLambdaͰϨεϙϯεฦ͠ɺ ඇಉظʹޙଓͷLambdaͰॲཧΛܧଓͤ͞Δ • ॲཧ׬ྃޙʹSNSͳͲͰ௨஌͢Δ

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5. ʮ1LambdaͰଟ਺ͷॲཧʯ AWS Lambda

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ՄࢹԽੑ͕௿͘ɺಉ࣮࣌ߦ΍
 ϦτϥΠॲཧͰ໰୊ग़Δ͔΋ • ಉ࣮࣌ߦ਺͕100ͳͷͰɺ1Lambdaͷॲཧ͕࣌ؒ௕͍ͱಉ࣮࣌ߦ਺Ͱ಄ଧͪ͢Δ͔΋ɻ
 1ϑΝϯΫγϣϯͷ࣮ߦ࣌ؒ͸ՄೳͳݶΓ୹͘͢Δ͜ͱ
 ʢಉ࣮࣌ߦ਺ͷ্ݶ؇࿨Մೳ͕ͩɺ࣮੷͕গͳ͍৔߹͸௨Βͳ͍͜ͱ΋͋Δͦ͏ʣ • Lambda͕ࣦഊͨ͠ࡍʹ߹ܭ3ճϦτϥΠॲཧ͞Εͯ͠·͏ͨΊɺ్த·Ͱͷॲཧ͕ෳ਺ճ࣮ ߦ͞Εͯ͠·͏͜ͱ΋͋Δɻ࣮֬ʹ1ճ͚࣮ͩߦ͍ͨ͠৔߹͸ʮcontext.done()ʯ͢Δɻ • όονॲཧͰ͍͏ͱ͜ΖͷϦϥϯͱ͔ɺτϥϯβΫγϣϯɾϩʔϧόοΫͱ͔ແ͍ͷͰႈ౳ ੑ͕อͨΕͨɺෳ਺ճ࣮ߦͯ͠΋͍͍ॲཧͰ࡞Βͳ͍ͱγϯυΠ͔΋ʢ΂͖࿦͗͢Δ͚Ͳʣ • StepFunctionΛ࢖͑͹ॲཧϑϩʔ΋ՄࢹԽग़དྷͯɺ؅ཧ͕ḿΔͷͰ1Lambdaʹ߆Δඞཁͳ͍ • ͨͩɺ࠶ૹ΍ׂΓࠐΈͳͲΛߟྀ͓͔ͯ͠ͳ͍ͱޙͰϝϯς͠ʹ͍͘͜ͱ΋ɻ
 ͜ͷลͷϕετϓϥΫςΟε͸·ͩ·ͩ͜Ε͔Βɻ

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6. ʮ؂ࢹΛ͠ͳ͍ʯ Amazon CloudWatch

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؂ࢹ͸ઈର͠·͠ΐ͏ • ඞͣ੒ޭ͍ͯ͠Δอূ͸ͳ͍ • ඞͣॲཧ͠ͳ͍ͱ͍͚ͳ͍΋ͷ͸ΩονϦ؂ࢹ͠·͠ΐ ͏ʢLambda͸Α͘؂ࢹͷߟྀ͔Β࿙ΕΔʣ • Lambdaͷ৔߹͸ʮErrorsʢྫ֎ൃੜʣʯΛ؂ࢹͯ͠Ξ ϥʔτΛ্͛Δ • ϩά͸CloudWatch Logsʹ͋ΔͷͰɺCWLogsͷϝτ ϦοΫϑΟϧλͰΞϥʔτ্͛Δ

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7. όοΫΤϯυʹDynamoDB AWS Lambda Amazon API Gateway mobile client Amazon DynamoDB

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ΩϟύγςΟ؅ཧ͕ඞཁ • DynamoDB͸1ඵ͋ͨΓͷಡΈॻ͖ྔʢΩϟύγ ςΟʣΛࣄલʹઃఆ͢Δ • ΩϟύγςΟΛ௒͑ͨ৔߹͸ॲཧ͖͠ΕͣΤϥʔ ͱͳΔʢεύΠΫͳͲʹ஫ҙʣ • ϩετͯ͠͸͍͚ͳ͍σʔλͷ৔߹͸ॻ͖ࠐΈࣦ ഊ࣌ʹSQSʹ֨ೲ͠ɺ࣌ؒΛஔ͍ͯϦτϥΠ͢Δ ͳͲΛݕ౼͢Δඞཁ͕͋Δ

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8. ௚઀Kinesis Amazon Kinesis mobile client

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γϟʔυͷ؅ཧ͕ඞཁ • 1γϟʔυʹ1ඵ͋ͨΓ࠷େ1,000݅ͷPUT • ΩϟύγςΟΛ௒͑ͨ৔߹͸ॲཧ͖͠ΕͣΤϥʔͱͳΔʢε ύΠΫͳͲʹ஫ҙʣ • ϩετͯ͠͸͍͚ͳ͍σʔλͷ৔߹͸ΫϥΠΞϯτଆͰϦ τϥΠػߏΛઃ͚Δ • γϟʔυΛ෼ׂ͢Δ͜ͱͰॲཧྔ͸૿΍ͤΔ • ͕ɺpartition-keyͰద੾ʹ෼ࢄ͠ͳ͍ͱยํʹدΔ

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9. LambdaͷόοΫΤϯυʹRDS AWS Lambda Amazon API Gateway mobile client Amazon RDS

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RDS΁ͷ઀ଓͷಓ͸ࠔ೉ • Lambda͔ΒVPC಺ʢPrivate SubnetʣͷRDSʹ઀ଓ͢Δʹ͸VPC in LambdaΛ࢖͏ඞཁ͕͋ΓɺLambdaͷى ಈ͕஗͘ͳΔʢENIͷੜ੒͕஗͍ʣ • VPC in Lambda͸LambdaΛ࣮ߦ͢Δ͝ͱʹENIΛ࢖༻͢ΔͨΊɺSubnet͸େ͖֬͘อ͠ͳ͍ͱSubnetͷIPΛ ࢖͍੾ͬͯENI͕ੜ੒ग़དྷͣʹΤϥʔ͕ൃੜ͢Δ • Lambda in Public͸RDSʹରͯ͠ɺSecurityGroupͷϑϧ։์ʢ΋͘͠͸Ұ࣌తʹࣗIPΛ։์ʣ͕ඞཁʹͳΔ ͕ɺDBͷಛੑΛ౿·͑ΔͱηΩϡϦςΟ্ɺϑϧ։์΍Public SubnetʹRDSΛ഑ஔ͢Δͷ͸ݱ࣮తͰ͸ͳ͍ • Lambda͔ΒRDS΁ͷDBίωΫγϣϯ͸ϦΫΤετ୯ҐʹͳΔͨΊɺಉ࣌઀ଓ͕଱͑ΒΕͳ͍Մೳੑ΋ • σʔλετΞͷమଇ͸DynamoDBɻ
 DBͷ໰୊ͰͲ͏ͯ͠΋VPCΛར༻͍ͨ͠ʢPrivateʹ഑ஔ͍ͨ͠ʣ৔߹͸ɺDynamoDB StreamsʢDynamoDB Streams=>Lambda=>SQS=>RDSʣΛར༻ͨ͠ඇಉظ൓өΛݕ౼͢Δ

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10. ੜͷAWSαʔϏεͰड͚Δ Amazon Kinesis mobile client mobile client Amazon DynamoDB

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API GatewayΛڬΉͱ޾ͤʹͳΔ ʢ͔΋ʁʣ • ੜͷAWSαʔϏεʢKinesis΍DynamoDBͳͲʣͰड͚ΔͱɺҎԼͷΑ͏ͳ໰୊͕ • ଞʹྑ͍αʔϏε͕ग़ͨΒΞϓϦଆʢσόΠεଆʣͳͲͷมߋ͕ඞཁ • Πϯϑϥଆ͔Βͨ͠ΒΞϓϦଆʢσόΠεଆʣʹɺԿ࢖ͬͯΔ͔ͱ͔αʔϏε Λҙࣝͯ͠΄͘͠ͳ͍ • API GatewayΛؒʹڬΈRESTͰड͚ΔΑ͏ʹ͢ΔͱɺΠϯϑϥʢAWSαʔϏε ଆʣ͸ந৅Խ͞ΕΔ • ந৅Խ͓ͯ͘͠ͱɺΑΓྑ͍αʔϏε͕ग़ͨ࣌ʹΞϓϦଆʢσόΠεଆʣʹґ ଘͤͣʹॊೈʹมߋ͕Մೳ • Ұ൪࢝ΊʹSDKΛ࢖͑ɻͬͯݴ͚ͬͨͲɺԿΛॏࢹ͢Δ͔ʁͰબ୒Λ

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࠷ޙʹ • ϋϚΓͲ͜Ζ͸৭ʑ͋Δ • ࢖͍ํʹΑͬͯ͸ੌ͘ྑ͍݁ՌʹͳΔ͚Ͳɺ
 ࢖͍ํ͕ѱ͚Ε͹ΠϚΠνʹͳΔʢσʔλϩετ͢Δͱ͔ʣ • શ෦αʔόϨεʹ͢Δඞཁ͸ͳ͍ • RDBʹྑ͍ػೳ͕͋ΔͷʹKVSͰؤுΓ·ͬͯ͘Δײͱ
 ಉ͡Ͱɺཁ͸࢖͍ॴͰ͢ɻ • ΈΜͳͰϋϚͬͯϕετϓϥΫςΟεΛ࡞͍͖ͬͯ·͠ΐ͏

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