我々はZOZOTOWNのクラウドジャーニーを通じて何を学んだのか？

Developers Summit 2020プレゼンテーション資料
Event: https://event.shoeisha.jp/devsumi/20200213/session/2338/
関連記事: https://codezine.jp/article/detail/11990

Transcript

1. զʑ͸;0;0508/ͷ
   Ϋϥ΢υδϟʔχʔΛ௨ͯ͡
   ԿΛֶΜͩͷ͔ʁ
   株式会社ZOZOテクノロジーズ
   開発部 ZOZOTOWNリプレースチーム
   川崎 庸市
   $PQZSJHIU˜;0;05FDIOPMPHJFT *OD
   "
   %FWFMPQFST4VNNJU
   
   

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2. ˜;0;05FDIOPMPHJFT *OD
   גࣜձࣾ;0;0ςΫϊϩδʔζ
   ։ൃ෦ ;0;0508/ϦϓϨʔενʔϜ
   ΤϯδχΞ
   ઒࡚ ༱ࢢ
   Yoichi Kawasaki
   աڈʹɺϠϑʔגࣜձࣾʹͯΠϯλʔωοταʔϏεͷج൫ϓϥοτ
   ϑΥʔϜ։ൃΤϯδχΞɺϚΠΫϩιϑτʹͯΤϯλʔϓϥΠζݕࡧ
   ͷίϯαϧɺΫϥ΢υͷιϦϡʔγϣϯΞʔΩςΫτ౳Λܦͯɺݱࡏ͸
   ;0;0ςΫϊϩδʔζͰ;0;0508/ͷΫϥ΢υ࡮৽ϓϩδΣΫτͷ
   ୲౰ΤϯδχΞɻ ଞɺۀ຿֎Ͱ/P0QT+BQBOίϛϡχςΟʔӡӦ
   2
   @yokawasa
   https://github.com/yokawasa
   

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3. ˜;0;05FDIOPMPHJFT *OD
   IUUQT[P[PKQ
   ˔ ೔ຊ࠷େڃͷϑΝογϣϯ௨ൢαΠτ
   ˔ Ҏ্ͷγϣοϓɺ Ҏ্ͷϒϥϯυͷऔΓѻ͍ʢͱ΋
   ʹ೥݄຤࣌఺ʣ
   ˔ ৗ࣌ສ఺Ҏ্ͷ঎඼ΞΠςϜ਺ͱຖ೔ฏۉ ఺Ҏ্ͷ৽ண
   ঎඼Λܝࡌ
   ˔ ଈ೔഑ૹαʔϏε
   ˔ ΪϑτϥοϐϯάαʔϏε
   ˔ πέ෷͍ ͳͲ
   4
   

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4. ˜;0;05FDIOPMPHJFT *OD
   IUUQTXFBSKQ
   6
   ˔ ೔ຊ࠷େڃͷϑΝογϣϯίʔσΟωʔτΞϓϦ
   ˔ ສμ΢ϯϩʔυಥഁɺίʔσΟωʔτ౤ߘ૯਺͸ສ݅
   Ҏ্ʢͱ΋ʹ೥݄຤࣌఺ʣ
   ˔ શੈքʢ"QQ4UPSF(PPHMF1MBZ͕ར༻ՄೳͳશͯͷࠃʣͰμ
   ΢ϯϩʔυ͕Մೳ
   ˔ ສਓҎ্ͷϑΥϩϫʔΛ࣋ͭϢʔβʔʢ8&"3*45"ʣ΋஀ੜ
   

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5. ˜;0;05FDIOPMPHJFT *OD
   IUUQT[P[PKQNVMUJTJ[F
   ˔ ਎௕ͱମॏΛબ୒͢Δ͚ͩͰཧ૝ͷαΠζͷ঎඼͕ݟ͔ͭΔ৽͠
   ͍༸෰ͷങ͍ํ
   ˔ ;0;046*5Ͱಘͨສ݅Ҏ্ͷମܕσʔλΛ׆༻͠ɺʙ
   αΠζͷϚϧναΠζʢଟαΠζʣʹల։
   ˔ ೥ळౙΞΠςϜ͔ΒɺਓؾϒϥϯυͷϚϧναΠζΞΠς
   ϜΛൢച։࢝
   ʲࢀՃاۀʳ
   גࣜձࣾΞʔόϯϦαʔνɺגࣜձࣾετϥΠϓΠϯλʔφγϣφϧɺ
   גࣜձࣾσΠτφɾΠϯλʔφγϣφϧɺגࣜձࣾύϧɺגࣜձࣾϏʔϜεɺ
   גࣜձࣾϕΠΫϧʔζɺ."3,45:-&3גࣜձࣾɺϦʔόΠɾετϥ΢ε δϟύϯגࣜձࣾ
   ͳͲ
   7
   

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6. ˜;0;05FDIOPMPHJFT *OD
   ηογϣϯ֓ཁ
   զʑZOZOςΫϊϩδʔζ͸೔ຊ࠷େڃͷϑΝογϣϯ௨ൢαΠτ
   「ZOZOTOWN」ͷج൫ΛΦϯϓϨϕʔε͔ΒΫϥ΢υʢAzure, AWSͳͲʣ
   Λ׆༻ͨ͠ཧ૝ͷγεςϜʹ࡮৽͍ͯ͘͠ϓϩδΣΫτΛਪਐ͍ͯ͠·͢ɻ
   ຊηογϣϯͰ͸ͦͷதͰ΋ZOZOTOWNͷόοΫΤϯυࢀরܥAPIγες
   ϜͰͷܦݧʹϑΥʔΧεΛ౰ͯɺ͜Ε·ͰͷܦݧɺϓϩδΣΫτ௨ֶͯ͡Μ
   ͩ஌ݟ͍࣮ͭͯࡍͷΤϐιʔυΛަ͓͑ͯ࿩͠·͢ɻΫϥ΢υ࡮৽ɺҠߦΛ
   ߟ͍͑ͯΔํʑʹͱͬͯώϯτΛಘΔ͖͔͚ͬ΍ɺҰา֎ʹ౿Έग़͖͔ͬ͢
   ͚ʹͳΕΕ͹޾͍Ͱ͢ɻ
   8
   

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7. ˜;0;05FDIOPMPHJFT *OD
   9
   ;0;0508/Ϋϥ΢υδϟʔχʔ
   ʙ͜Ε·ͰͷಓͷΓʙ
   

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8. ˜;0;05FDIOPMPHJFT *OD
   10
   DevOps is the practice of developers being responsible for
   operating their services in production, 24/7. This includes
   development using shared infrastructure primitives, testing,
   on-call, reliability engineering, disaster recovery,
   defining SLOs, monitoring setup and alarming, debugging
   and performance analysis, incident root cause analysis,
   provisioning and deployment, etc.
   The human scalability of “DevOps”
   https://medium.com/@mattklein123/the-human-scalability-of-devops-e36c37d3db6a
   ϦϓϨʔενʔϜͷ׆ಈͱΑ͘ࣅ͍ͯΔ
   &OWPZ։ൃऀʹΑΔ%FW0QTఆٛ
   

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9. ˜;0;05FDIOPMPHJFT *OD
   11
   DevOps is the practice of developers being responsible for
   operating their services in production, 24/7. This includes
   development using shared infrastructure primitives, testing,
   on-call, reliability engineering, disaster recovery,
   defining SLOs, monitoring setup and alarming, debugging
   and performance analysis, incident root cause analysis,
   provisioning and deployment, etc.
   The human scalability of “DevOps”
   https://medium.com/@mattklein123/the-human-scalability-of-devops-e36c37d3db6a
   ϦϓϨʔενʔϜͷ׆ಈͱΑ͘ࣅ͍ͯΔ
   &OWPZ։ൃऀʹΑΔ%FW0QTఆٛ
   YͰຊ൪αʔϏεӡ༻ʹ੹೚Λ࣋ͭͱ͍͏։ൃऀʹΑΔ׆ಈ
   ͜ͷ׆ಈʹ͸ɺ։ൃɺςετɺPODBMMɺ৴པੑͷͨΊͷΤϯδχΞϦϯά׆ಈɺ
   ࡂ֐෮چɺ4-0ͷఆٛɺ؂ࢹઃఆͱɺσόοάͱύϑΥʔϚϯε෼ੳɺ໰୊ͷࠜຊݪ
   Ҽ෼ੳɺιϑτ΢ΣΞͷॳظઃఆͱల։ͳͲؚ͕·Ε·͢ɻ
   

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10. ˜;0;05FDIOPMPHJFT *OD
    ;0;0508/ϦϓϨʔεͷഎܠ
    Ϗδωε֦େʹ൐͏ར༻ऀˍෛՙ૿ɺৼΕ෯ͷେ͖͍قઅมಈɺ
    ૿͑ଓ͚Δ৽ػೳཁ݅ͱࢢ৔౤ೖ଎౓୹ॖԽͷཁٻ͕͋ΔதͰ
    ϦϓϨʔεલͷγεςϜʢΦϯϓϨͰϞϊϦεʣ͸͞·͟·ͳ
    ໰୊Λ๊͍͑ͯͨ
    • ͕͔͔࣌ؒΔϦιʔεௐୡ
    • Πϯϑϥߏஙɾӡ༻ͷखؒͷ૿େ
    • γεςϜෛՙͱσʔλ૿ʹ൐͏ύϑΥʔϚϯεྼԽ
    12
    

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11. ˜;0;05FDIOPMPHJFT *OD
    ;0;0508/ϦϓϨʔεͷഎܠ
    13
    ͜ͷҐஔʹ߹Θͤͯ
    ७૿෼ͷαʔόΛ
    ຖ೥ങ͍଍͞ͳ͚Ε
    ͹ͳΒͳ͍
    

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12. ˜;0;05FDIOPMPHJFT *OD
    ϦϓϨʔεલͷࢀরܥ"1*ΞʔΩςΫνϟ
    14
    on-premises
    SQL Server
    on-premises
    IIS Server
    SQL
    .asp
    ετΞυݺͼग़͠
    Data Center
    ௒ີ݁߹
    

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13. ˜;0;05FDIOPMPHJFT *OD
    ϦϓϨʔεઓུ
    αϒγεςϜ͝ͱʹஈ֊తʹ࣮ࢪ
    • αϒγεςϜ͝ͱʹஈ֊తʢ/ˠʣʹΫϥ΢υϕʔεʹ࡮৽
    /P0QT-FTT0QT
    • ߏஙɾӡ༻ίετΛলྗԽ͢ΔͨΊੵۃతʹ1BB4ɺ4BB4ͳͲͰ͖Δ͚ͩந৅Խɺ
    ࣗಈԽ͞ΕͨαʔϏεΛੵۃతʹ׆༻
    Ϋϥ΢υதཱʢ$MPVE"HOPTUJDʣ
    • ϚϧνΫϥ΢υɺΫϩεΫϥ΢υͰߏ੒Ͱ͖ΔΑ͏ʹಛఆΫϥ΢υʹա౓ͳґଘΛ
    ͠ͳ͍πʔϧɾαʔϏεબఆͱઃܭ
    15
    

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14. ˜;0;05FDIOPMPHJFT *OD
    Azure
    ࢀরܥ"1*ΞʔΩςΫνϟ
    16
    Azure
    SQL Database
    on-premises
    IIS Server
    SQL
    .asp
    Data Center
    AKS
    pods
    "1*ݺͼग़͠
    "1*Խ ૄ݁߹
    ϦϓϨʔεର৅
    

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15. ˜;0;05FDIOPMPHJFT *OD
    ϚϧνΫϥ΢υ΁ͷ଩੾Γ
    ໨తɿ410'ʢ୯Ұো֐఺ʣͷճආ
    • ୯ҰΫϥ΢υͰϦʔδϣϯผΫϥελ෼ࢄҊ΋౰ॳ͋ͬͨ
    • Ϋϥ΢υͷେن໛ো֐ɺఆظɾෆఆظϝϯςϯφεʹؔ܎
    ͳ҆͘ఆతʹαʔϏεΛܧଓ͔ͤͨͬͨ͞
    17
    ZOZOTOWN
    オンプレ
    参照系API
    参照系API
    Azure
    

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16. ˜;0;05FDIOPMPHJFT *OD
    αʔϏεˍιϑτ΢ΣΞελοΫ
    18
    Container Orchestrator
    Datastore
    Workflow
    Web / App
    Automation / Configuration
    Observability
    CI/CD, Code Repository
    SQL Server
    Azure DB for
    PostgreSQL
    RDS for SQL
    RDS for
    PostgreSQL
    AKS
    Ansible
    Kustomize
    CircleCI GitHub ArgoCD
    

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17. ˜;0;05FDIOPMPHJFT *OD
    20
    ;0;0508/Ϋϥ΢υδϟʔχʔ
    ʙֶͼɺ࣮ફɺ৺ߏ͑ʙ
    

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18. ˜;0;05FDIOPMPHJFT *OD
    Ϋϥ΢υ͸ෆ҆ఆͰ͋Δʢͱ͍͏લఏͰߟ͑Δʣ
    Ϋϥ΢υ͸Ӭԕͷϕʔλ൛ɻΦϯϓϨʹൺ΂ෆ҆ఆͰ͋Δ͜ͱ
    લఏͰݕ౼ΛਐΊΔඞཁ͕͋Δ
    ཁҼͦͷᶃɿܧଓతϝϯςφϯε
    Ϋϥ΢υಛ༗ͷϝϯςφϯεͱͷ෇͖߹͍͕ඞཁͱͳΔɻ࠶ىಈͳͲͰαʔ
    ϏεஅΛཁ͢Δ΋ͷ΋͋ΔͷͰɺ౰વͳ͕Βର৅Ϧιʔε͸ෆ҆ఆʹͳΔ
    • ࣄલ௨஌͋Γͷܭըతϝϯςφϯε
    • ࣄલ௨஌ͳ͠ͷۓٸϝϯςφϯε
    ཁҼͦͷᶄɿڞ༗Ϧιʔε
    Ϧιʔε͕׬શઐ༗ܕͰ͸ͳ͘ɺڞ༗ܕɾ૬৐ΓܕͰ͋Δ৔߹͸
    ͏Δ͍͞ྡਓ໰୊ʢ/PJTZ/FJHICPSTʣ͕͋Δ
    21
    

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19. ˜;0;05FDIOPMPHJFT *OD
    Ϋϥ΢υ͸੹೚ڞ༗Ϟσϧ
    Ϋϥ΢υϕϯμʔͱར༻ऀͷ؅ཧݖݶʹԠͨ͡੹೚෼୲ͷߟ͑ํ
    22
    • ($1ྫɿʮΞϓϦϨϕϧͰͷσʔλ੍ޚʯ
    ͸ར༻ऀͷ੹೚
    • "[VSFྫɿαʔϏεϞσϧผϕϯμʔͱར༻
    ऀͷ੹೚෼୲ʢӈਤʣ
    総務省 ICTスキル総合習得教材 2-3: クラウドの特性とセキュリティ
    https://www.soumu.go.jp/ict_skill/pdf/ict_skill_2_3.pdf
    ଟ͔Εগͳ͔Ε؅ཧ੹೚͸ར༻ऀͰ͋Δࣗ෼
    ͨͪʹ͋Δ͜ͱΛೝࣝ͠ɺΦʔφʔγοϓΛ
    ࣋ͬͯରࡦΛߦ͏͜ͱ
    

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20. ˜;0;05FDIOPMPHJFT *OD
    ݎ࿚ੑΑΓճ෮ੑ %FTJHOGPS3FTJMJFODZ
    ճ෮ੑ ʹ ো֐͔Βճ෮ͯ͠ಈ࡞Λଓߦ͢ΔγεςϜͷೳྗ
    ো֐ճආ͕໨తͰ͸ͳ͘ɺμ΢ϯλΠϜ΍σʔλଛࣦΛճආ͠
    αʔϏεͷఏڙΛҡ࣋Ͱ͖ΔγεςϜ
    લఏɿΫϥ΢υ͸յΕΔ ʴ ܧଓతΞοϓσʔτ
    23
    

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21. ˜;0;05FDIOPMPHJFT *OD
    ݎ࿚ੑΑΓճ෮ੑ %FTJHOGPS3FTJMJFODZ
    ճ෮ੑͷ͋ΔϓϥοτϑΥʔϜબ୒
    ϚωʔδυαʔϏεɺ1BB4ɺ$BB4ɺ4FSWFSMFTT
    ճ෮ੑͷ͋ΔΞϓϦέʔγϣϯઃܭ
    24
    アプリケーション回復性パターン
    https://docs.microsoft.com/ja-jp/dotnet/architecture/cloud-native/application-resiliency-patterns
    

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22. ˜;0;05FDIOPMPHJFT *OD
    ࢀরܥ"1*ͷओͳճ෮ੑػೳ
    ϚϧνΤϯυϙΠϯτɾΫϥελͷෛՙ෼ࢄ
    • --#ͱLT3FBEJOFTT-JWFOFTT1SPCF
    • ױ෦Λ੾Γ཭ͤΔߏ੒ʢӡ༻ऀʹͱͬͯ`੾Γ཭ͤΔ`ͱ͍͏৺ཧత҆৺ײ͸ઈେʣ
    ΞϓϦͷΦʔτώʔϦϯά
    • ,VCFSOFUFTΦʔτώʔϦϯάػೳ
    "1*ϦΫΤετͷϦτϥΠ
    • ϚϧνΫϥ΢υؒͰͷϦΫΤετͷϦτϥΠʴྲྀྔׂ߹੍ޚ
    "1*ϦΫΤετͷαʔΩοτϒϨʔΧʔ
    • ແݶϦτϥΠ๷ࢭ
    25
    

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23. ˜;0;05FDIOPMPHJFT *OD
    Ϋϥ΢υϦιʔε͸༗ݶ
    Ϋϥ΢υϦιʔε͸෺ཧࢿݯ͕ιϑτ΢ΣΞͰԾ૝Խɾந৅Խ
    ͞Εͨ΋ͷɻ༧Ίେྔʹ༻ҙ͞Ε͍ͯΔͱ͸͍͑༗ݶͰ͋Δ
    • ͍ͭͰ΋ظ଴௨ΓʹϦιʔε֬อ͕Ͱ͖Δͱ͸ݶΒͳ͍ɻ7.࡞੒͕ࣦഊ͠
    ͨΓɺεέʔϧมߋʹࣦഊ͢Δ͜ͱ΋͋Δ
    • Ϋϥ΢υϕϯμʔͷधཁ༧ଌΛ্ճΔਓؾͷ঎඼΍ɺಛఆͷ঎඼Λେྔങ
    ͍͢Δ৔߹͸஫ҙ͕ඞཁ
    ΩϟύγςΟϓϥϯχϯάͱΫϥ΢υϕϯμʔ૬ஊ
    • લ΋ͬͯେྔϦιʔε֬อ͕ඞཁͱͳΔ͜ͱ͕Θ͔͍ͬͯΔ৔߹ɺͰ͖Δ
    ͚ͩૣ͘Ϋϥ΢υϕϯμʔʹΩϟύγςΟ֬อΛ૬ஊ͢΂͖
    26
    

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24. ˜;0;05FDIOPMPHJFT *OD
    27
    このタイミングでDB
    スケールアップを実施。
    ただしキャパシティ確保で
    きず失敗に終わる
    ピークアクセス
    によりCPU100%
    に張り付く
    DB CPU%
    %#αΠζมߋࣦഊྫ !ͱ͋ΔηʔϧΠϕϯτ
    CPU100%ライン
    

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25. ˜;0;05FDIOPMPHJFT *OD
    ෆ֬ఆཁૉʢ$IBPTʣ
    ;0;0508/ओཁηʔϧΠϕϯτʹࡍͯ͠ɺࣄલʹे෼ͳ४උ
    Λߦͬͨʹ΋͔͔ΘΒͣ૝ఆ௨Γͷ݁Ռ͕ಘΒΕͳ͔ͬͨ
    • ૝ఆΛ௒͑ΔαʔϏεΞΫηε਺ɺύλʔϯ
    • ૝ఆ֎ͷϘτϧωοΫ
    • ૝ఆ֎ͷಈ͖Λͯ͘͠Εͳ͍Ϋϥ΢υαʔϏε
    ৗʹෆ֬ఆཁૉʢ$IBPTʣ͕͋Δ͜ͱΛҙࣝ͠ɺ͍ͣΕͷ໰୊͕ൃੜ
    ͯ͠΋αʔϏεΛܧଓͰ͖ΔΑ͏ʹඋ͑Δඞཁ͕͋Δ
    28
    

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26. ˜;0;05FDIOPMPHJFT *OD
    ΧΦεΤϯδχΞϦϯάͷݪଇ
    29
    http://principlesofchaos.org/?lang=JAcontent
    ΧΦεΤϯδχΞϦϯάͱ͸෼ࢄγεςϜʹ͓͍ͯγεςϜ͕ෆ҆ఆ
    ͳঢ়ଶʹ଱͑Δ͜ͱͷग़དྷΔ؀ڥΛߏங͢ΔͨΊͷݕূͷن཯Ͱ͢
    • ఆৗঢ়ଶʹ͓͚ΔৼΔ෣͍ͷԾઆΛཱͯΔ
    • ࣮ੈքͷࣄ৅͸ଟ༷Ͱ͋Δ
    • ຊ൪؀ڥͰݕূΛ࣮ߦ͢Δ
    • ܧଓతʹ࣮ߦ͢ΔݕূͷࣗಈԽ
    • ӨڹൣғΛہॴԽ͢Δ
    

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27. ˜;0;05FDIOPMPHJFT *OD
    ڥքઢʹજΜͰ͍ͨѱຐ
    ෛՙࢼݧͰ͸ݟ͑ͯ͜ͳ͍ຊ൪ΞΫηεͰҾ͖ى͜͞Εͨ૝ఆ֎ͷ໰୊
    30
    SQL Database
    Azure Cache For Redis
    参照系APIアプリ
    参
    照
    ク
    エ
    リ
    クエリ結果
    キャッシュ
    ΞϓϦͱ%#3FEJTͷ઀ଓ
    • %#ෛՙܰݮͷͨΊʹΫΤϦ݁ՌΛ3FEJT$BDIF
    αʔϏεʹΩϟογϡ͢Δߏ੒
    ൃੜͨ͠ࣄ৅
    • ௨ৗͱൺ΂ΞΫηε਺͕૿େ͢Δ;0;0508/
    ओཁηʔϧΠϕϯτ࣌ʹ3FEJT$BDIFαʔϏε
    ͷ$16͕ͰுΓ෇͘
    • ͜ͷͱ͖3FEJT΁ͷϦΫΤετظ଴௨Γʹ
    5JNFPVUͰ໭Βͣɺ݁ՌϢʔβʔϦΫΤετͷ
    5JNFPVU͕සൃ
    • 3FEJT$16͕͕༠ൃͨ͠૝ఆ֎ͷࣄ৅
    

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28. ˜;0;05FDIOPMPHJFT *OD
    Ϋϥ΢υ͸ܾͯ҆͘͠ͳ͍
    • ίετ࡟ݮΛ໨తͱ͠ͳ͍͜ͱ
    • ΦϯϓϨͷݮՁঈ٫Ϟσϧʹൺ΂Ϋϥ΢υͷैྔ՝ۚϞσϧ͸௕ظ
    తʹݟׂͯߴʹͳΔ͜ͱ͕ଟ͍
    • Կʹର͓ͯۚ͠Λ෷͏ͷ͔ΛࠓҰ౓ߟ͑Α͏
    31
    Մ༻ੑ ࢢ৔౤ೖ଎౓
    ηΩϡϦςΟ
    ֵ৽
    Πϊϕʔγϣϯ
    ࣗಈԽ
    *B$ͱͷ૬ੑ
    IaC = Infrastructure as Code
    

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29. ˜;0;05FDIOPMPHJFT *OD
    ίετ࡟ݮରࡦྫ r %#ίΞͷεέʔϧมߋ
    Ұ೔ͷ%#ͷ$16ෛՙঢ়گͷنଇੑΛར༻ͨ͠%#ίΞ਺มߋͷࣗ
    ಈεέδϡʔϦϯάΛ࣮ࢪɻෛՙ͕௿͍࣌ؒଳͷίΞ਺Λௐ੔͠
    ͯίετ࡟ݮ͢ΔΞϓϩʔν
    32
    ある平日のDB(SQL)のCPU負荷推移グラフ
    深夜帯
    ෛՙ͕௿͍࣌ؒଳʹ%#Ϋϥελͷߏ੒ϊʔυ਺ͱ
    શମͷίΞ਺ΛԼ͛ΔεέδϡʔϥʔΛ։ൃɻ
    ͜ΕʹΑΓෛՙ͕௿͍ਂ໷ଳͷίετ࡟ݮʹ੒ޭ
    ͳ͓ɺݱࡏ͸࣮ࡍͷෛՙʹԠͨ͡ಈతεέʔϥʔ
    Λ։ൃத
    

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30. ˜;0;05FDIOPMPHJFT *OD
    ֶशͷجຊ࢟੎ʹ͍ͭͯ
    Ϋϥ΢υʹ͓͍ͯϢʔβʔ͸ࣗݾֶश͕جຊ
    • Ϋϥ΢υɺΫϥ΢υωΠςΟϒ͸ਐԽͷεϐʔυ͕଎͘ɺͦΕΒٕज़Λ࢖
    ͍͜ͳ͍ͯ͘͠ʹ͸ண࣮ʹΩϟονΞοϓ͢Δ࢟੎ͱػಈྗ͕ඞཁ
    • 4*FS΍ϕϯμʔαϙʔτ΁ͷؙ౤͛ํࣜͰ͸εϐʔυײΛอͭ͜ͱ͸೉͠
    ͘ͳΔɻϝϯλʔͱϝϯςΟʔͷؔ܎͕ͪΐ͏ͲΑ͍ɻ
    • άϩʔόϧͰͷࣗࣾΤϯδχΞʹΑΔ಺੡ܕ։ൃͷ੒ޭࣄྫ΋૿͍͑ͯΔ
    33
    ࠷ޙ͸ɺࣗ෼ͨͪͰಆ͏ʂͱ͍͏࢟੎
    

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31. ˜;0;05FDIOPMPHJFT *OD
    ;0;0508/ϦϓϨʔεͷ͜Ε͔Βͷ׆ಈ
    • ར༻ܗଶʹదͨ͠࠷దͳσʔλετΞͷબ୒
    • 42-4FSWFS΁ͷա౓ͳґଘ͔Βσʔλߏ଄͝ͱʹ࠷దͳσʔλετΞར༻ʹҠߦ
    • ଞͷΦϯϓϨαϒγεςϜͷΫϥ΢υԽ
    • ΦϯϓϨ8FCαʔόɺΧʔτγεςϜɺجװγεςϜɺFUDɾɾɾ
    34
    

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32. ˜;0;05FDIOPMPHJFT *OD
    ·ͱΊ
    • Ϋϥ΢υ͸Ӭԕͷϕʔλ൛ɻΦϯϓϨͱൺ΂ෆ҆ఆ͔ͭෆ֬ఆ
    ཁૉ͸ଟ͍͕ɺ׆༻͢Δ͜ͱͰಘΒΕΔϝϦοτ͸ඇৗʹଟ͍
    • Ϋϥ΢υΛཧղ͠ɺਖ਼͘͠޲͖߹͏͜ͱͰϓϥοτϑΥʔϜͷ
    ೳྗɾಛੑΛ࠷େݶʹڗड͢Δ͜ͱ͕Ͱ͖·͢
    • ੋඇ͜ΕΛ͖͔͚ͬʹ͋ͨͳͷΫϥ΢υδϟʔχʔʹҰา౿Έ
    ग़ͯ͠Έ͍ͯͩ͘͞
    35
    

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33. ˜;0;05FDIOPMPHJFT *OD
    36
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