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はてなリモートインターンシップ2022 マイクロサービス 講義資料
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Hatena
December 19, 2022
Programming
0
210
はてなリモートインターンシップ2022 マイクロサービス 講義資料
https://hatena.co.jp/recruit/intern/2022
Hatena
December 19, 2022
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Transcript
ϚΠΫϩαʔϏε #hatenaintern
☪仼סإ٭ٜ ˝ ם؆כםׂُؕؠٞئ٭لتֿלַֹֹס־־ ˝ ُؕؠٞئ٭لتס榫鏤סꦬ㍱妳־
☪仼ס⫂㳊 ˝ ُؕؠٞئ٭لتכע ˝ ٓؿٛت ˝ עיםמֽُׄؕؠٞئ٭لت ˝ ُؕؠٞئ٭لتס⮆Ⱏ亠嫎 ˝
ُؕؠٞئ٭لتסوٚؠطؔت ˝ ئ٭لتْشبٖ ˝ ױכ״
ֽ鎇םַ׆כ golang
ُؕؠٞئ٭لت ُؕؠٞئ٭لتכע
ُؕؠٞئ٭لت +
ُؕؠٞئ٭لت +
אאئ٭لتכע service a system that provides something that the public
needs, organized by the government or a private company Hatena REMOTE INTERNSHIP / ( ?)
ُؕؠٞئ٭لتכע + https://martinfowler.com/articles/microservices.html 2014 DDD( )
هٞءמכ׆סُؕؠٞئ٭لت 1 HTTP API - https://martinfowler.com/articles/microservices.html
ُؕؠٞئ٭لت REST API GraphQL gRPC... /
ةؘن٬يدتס䫍 2002 Amazon 1. ئ٭لتؕ٤ذ٭نؘ٭ت鵟י⪒יסظ٭ذכ嚀耆⪜ꝧ 2. אסؕ٤ذ٭نؘ٭ت鵟י鵟⟓םׄףםםַ 3. ؾشع٠٭ؠ飈סئ٭لتؕ٤ذ٭نؘ٭ت磬榺ג鵟⟓דֿׄ錉⺎ն 4.
✳榫䤗软עゖםַ HTTP Corba Pubsub ⛰ך荁ַ Bezos 5. Steve Yegge Google
ُؕؠٞئ٭لتס荁ַכ׆ API
ُؕؠٞئ٭لتס荁ַכ׆ ˝ 邾丗סؓوٛآ٭ب٘٤ך⺱⭚杼㲔逷䑒釐ֿםׂם ˝ ❆ֻף鵟湳ُؕؠٞئ٭لتכյ二ַؓوٛآ٭ب٘ ٤ךעאסُؕؠٞئ٭لتסٛؠؙتعדׄך鵟湳ֿך׀ ˝ ٚؕهٚٛך⺱׆כֿ⺎耆כַֻף⺎耆דֿյ銧鏤窜םל ֿ㰆㏇םַסֿَؕ٤ع ˝
ُؕؠٞئ٭لتׇכמز٭ّ⮉׆כֿך׀ ˝ 鵟湳םלْ٤طػ٤ت㓹泅ز٭ّםל
ُؕؠٞئ٭لتסחַכ׆ 1 web 2 20 ⾒ ⾒
ם僃鲣孱车זיַ־ ProtocolBu er gRPC GraphQL OpenAPI /
עיםכُؕؠٞئ٭لت ˝ עיםךُؕؠٞئ٭لت⮵榫יַױ ˝ 鐐ꄋئ٭لت ˝ هٞءذء ˝ 嚀危㰢綗 ˝
ز٭ّꝴךסظ٭ذס ˝ ؓوٛآ٭ب٘٤ُؕؠٞئ٭لتדׄך啶䡗יַכַֹյ釐碛釐碛ُ ؕؠٞئ٭لتיַ ˝ ؓوٛآ٭ب٘٤舅⛮עٓؿٛت┊㴩מ鷞榫יַ◄ֿ㛡ַ
ٓؿٛت ( ) 1 .... WAF(WebApplicationFramework)
ٓؿٛت 1 1 1 1 DB DB
ٓؿٛت 1 DB
vs CI/CD 2
1 1
ُؕؠٞئ٭لتס睦䈱 ? No /
㗞槡טׄגؤ٤ط؞تع DDD DB
磵⺬ꄆ邾 / ...
ُؕؠٞئ٭لتכظ٭ذ畘杼 ˝ ظ٭ذي٭ت┕סظ٭ذյُؕؠٞئ٭لتׇכמ斻玮י䧏ח׀ ˝ ظ٭ذي٭ت⪦僗כյ㗞槡טׄגؤ٤ط؞تعכַֹ䙫⽏ךֵױ荁ׂםַ ˝ ظ٭ذي٭ت邾丗סُؕؠٞئ٭لتך⪦僗כյظ٭ذي٭تֿ磵㷀ⶡ┉꤃㲹憠 מם ˝ ت؞٭ُ⪦僗יַג㕙⺬յֵئ٭لتך㚺催ⱶֻכ☽ئ٭لت㚺催מ鴑
䏼䑒釐ֵֿ ˝ ُؕؠٞئ٭لتׇכמ鸵⮉םظ٭ذي٭ت鹟䥃ך׀⮵憠ֵ ˝ ج؞ٖٛطؔ鈝憠鵭䈱鈝憠םלյ喋չ
ُؕؠٞئ٭لتכظ٭ذ畘杼
? No API GateWay API PC API API DB DB
1
ئ٭لتي٭تؓ٭؞طؠزٔ DB DB
ُؕؠٞئ٭لتס⮆Ⱏ
ُؕؠٞئ٭لتס⮆Ⱏ ˝ ُؕؠٞئ٭لت⛼זיַׂ꤀ע䑒յُؕؠٞئ٭لتס 鞊ⳉ婊㲊⛼哅ֿ䑒釐מם ˝ ُؕؠٞئ٭لتס⮆Ⱏ ˝ ⪮⛮氳ם⮆Ⱏ亠嫎釤⯥מյُؕؠٞئ٭لتס⯥䬠䤰ֻ יֽ׀ױֹ
ُؕؠٞئ٭لتס⯥䬠 DB
8 Fallacies of distributed computing ( 8 / ) -
1994 1. 2. 3. 4. 5. 6. 1 7. 8.
⺎鈝峮䓪 web / (Observability)
⺎鈝峮䓪 mackerel
ُؕؠٞئ٭لتס⮆Ⱏ ُؕؠٞئ٭لتס⮆Ⱏע荇չ孱孬ֿ㰆㏇ .... - - 僃鲣ךע⮆Ⱏ䣆Ⲃׄص٭ٜםלֿꝧ氦חחֵ
哅ⳉמ⮆Ⱏ ˝ 鏀錞 ˝ よ⿁辐炐٬吾碟 ˝ 鐐ꄋ ˝ ㏇䈻澬鏀 ˝
⭳蕔⛼哅 ˝ 鑁姲
哅ⳉמ⮆Ⱏ ˝ ٗ٭ا٭ֿאא樟ם㗞槡 ˝ ٗ٭ا٭ע⺱דֿյ姲״סֿ樟ם㗞槡
哅ⳉמ⮆Ⱏ /
㗞槡טׄגؤ٤ط؞تعמ⮆Ⱏ DDD DDD DDD
㗞槡טׄגؤ٤ط؞تعמ⮆Ⱏ (Entity Trap) - - - - DB ORM
ؕطٝ٭طؔهמ䷉ャ 1
攐䓪מ⮆Ⱏ / ( ) 1 (Availability) (Continuity) (Performance) / /
攐䓪מ⮆Ⱏ ײׂמُؕؠٞئ٭لت縒ֻ⯥מյױע㵚霄סئ٭لت⮆冪յלסֹםغْؕ ٤⣐ꪫֵֿ־釤哕״ױֹ /
❆ֻףج؞ٖٛطؔ ˝ ج؞ٖٛطؔמꄆ釐םظ٭ذ䣽ֹסעئ٭لتכי⮉ ⭳ױֹ ˝ 斻玮גظ٭ذي٭ت ˝ ❆ֻף鵟䅻סئ٭لتכ鐐ꄋئ٭لت⮆ꦕםל ˝ ⮯סئ٭لتכס鵟⟓ס倊⺘吾鋀ױֹ
❆ֻף⫋⮵榫䓪 ˝ ؓؗ٤ع㓹泅鵟湳յ婊岷嚀耆םל ˝ ⺱ؓؗ٤عך邾丗סئؕعמٞءؕ٤גַ ˝ 婊岷嚀耆ע䄄丗ֿ־־סךյُؕؠٞئ٭لتי⪦鵟 㓹泅מיֽ׀גַ ˝ 邾丗סئ٭لتך⮵榫ך׀־לֹ־
ُؕؠٞئ٭لتס⮆Ⱏ ˝ 釤י׀ג喋מُؕؠٞئ٭لتס⮆Ⱏ縒ֻכ׆ךע喋չ ם鈝憠ֵֿ ˝ 塜鉮ֿ扛ַ┩槡םסךյ喋չםססعٝ٭غ؛ن縒䜡ם ֿ錃銶ֹ ˝ 僃䖾ם錃銶ך扛ׄףؕطٝ٭طؔهמ䷉ャ◄ֿך׀ ˝
☽ס⣐ꪫכיظ٭ذס䣽ַמ浓泘׆כֵ
ُؕؠٞئ٭لتסوٚؠطؔت ˝ ُؕؠٞئ٭لتמֽׄظ٭ذס䣽ַ ˝ ئ٭لتꝴ鵟⟓ ˝ ئ٭لتْشبٖ ˝ ُؕؠٞئ٭لتסٛٛ٭تכٛنؒؠذٛ٤ء
ُؕؠٞئ٭لتמֽׄظ٭ذס䣽ַ
DB 1 1 DB to DB
CAP BASE 3 2 C: Consistency ( ) A: Availability
( P: Tolerance to network Partitions ( ) ( )CAP BASE Basically Available( ) Soft state( ) Eventually consistent( )
ُؕؠٞئ٭لتכ⮆丆عٚ٤اؠب٘٤ ! ئ٭لتױג׃عٚ٤اؠب٘٤עםַ 1
אך⮆丆عٚ٤اؠب٘٤גַ 2 Saga TCC
Saga T , T , T C , C ,
C :
Saga : AWS https://docs.aws.amazon.com/ja_jp/prescriptive-guidance/ latest/modernization-data-persistence/saga-pattern.html
TCC Try/Con rm/Cancel ײ؆ם荁ׄף⟊㰆յ鐍־ד״ם؞ٔ٤جٜ
TCC Try Cancel Try Con rm Con rm Cancel
TCC ˝ אבסئ٭لتמ◅㍑חٛؠؙتعֿ䑒釐 ˝ ع٭ذٜך侇ꝴֿ־־׆כֿؾشؠ
DB ? ... ADR
睦䈱縒ֻ泡גֹֿ荁ַ侇 1 1
ئ٭لتꝴ鵟⟓
ئ٭لتꝴ鵟⟓ schema rst
⫴璡䓪 1 1 1 /payment {"amount":300, "userAccount": "hoge"} /payment ID
/payment {"amount":300, "userAccount": "hoge","forPurchase": "abcd123"} forPurchase forPurchase
ئ٭لتْشبٖ
ُؕؠٞئ٭لتס畘杼 ˝ ؓوٛآ٭ب٘٤ע邾ꥭםئ٭لت紮סױ ˝ ؓوٛآ٭ب٘٤⟥渏י釤亠嫎ֿ培ַ ˝ ئ٭لتꝴס❣㰆꞊➟ ˝ 泃釱٬ٞءס⹜ ˝
ئؕغ٭قذ٭٤ֿ㛡ׂ⮵榫
ُؕؠٞئ٭لتס畘杼 ˝ ꤃㲹氦榟侇ס鐧削 ˝ ⠕չסئ٭لتꯂ樑מ釤יַׂכ侇ꝴֿ־־ ˝ ئ٭لتꝴס鵟⟓畘杼♓┕מ׆כֵֿאֹ
ئؕغ٭قذ٭٤ mackerel-container-agent
ئ٭لتْشبٖ proxy proxy ip
ئ٭لتْشبٖס䏔Ⱏ A B
ئ٭؞شعهٝ٭٭ Istio
ظ٭ذوٝ٭٤כؤ٤عٞ٭ٜوٝ٭٤ ˝ ظ٭ذوٝ٭٤ ˝ ⺨ئ٭لتמ㳝岣זיⳂׂوٞ؞ب ˝ 鵟⟓ס⯆䐒כ䗯㕔ס⹜ ˝ ىٜتزؘشؠ鏀錞٬鏀⺎םל车ֹ ˝
ْعٛشؠٞء⹜յؤ٤عٞ٭ٜوٝ٭٤峚
ظ٭ذوٝ٭٤כؤ٤عٞ٭ٜوٝ٭٤ ˝ ؤ٤عٞ٭ٜوٝ٭٤ ˝ ظ٭ذوٝ٭٤סؕ٤تذ٤تס畘杼 ˝ ⺨ئ٭لتסْعٛشؠٞء⹜ ˝ 啶䡗畘杼٬⺨牊رشبٍٖ٭غ
Envoy https://www.envoyproxy.io/ Lyft C++ L L HTTP HTTP, gRPC, WebSocket,
TCP ( )
Istio Istiod sidecar injection Envoy Envoy
ُؕؠٞئ٭لتסٛٛ٭ت亠嫎 API versioning / API
壿꣪氳מت؞٭ُסٛنؒؠذٛ٤ء GraphQL gRPC
催מ㰢שמע CloudNative CNCF Cloud Native Interactive Landscape The Amazon Builders'
Library microservice microservice - . oO( ( l _ l) ) Sam Newman 2016 Susan J. Fowler 2017 Neal Ford, Rebecca Parsons, Patrick Kua 2018 Sam Newman 2020 Microservice Architecture
ױכ״ ˝ ُؕؠٞئ٭لتע邾丗סئ٭لتֿ鵟⟓מזי鵽䯥י䡗 玮חؓ٭؞طؠزٔ ˝ ُؕؠٞئ٭لتס⮆Ⱏ亠嫎ע喋չם䣆嫎ֵֿ ˝ ُؕؠٞئ٭لتעؕطٝ٭طؔهמ䷉ャ禈ׄ׆כֿꄆ釐 ˝ ئ٭لتْشبٖםלסوٚؠطؔت⪌יַ׆ֹ
זיײֹסؤ٭ػ٭
: Istio istioctl install istioctl install !"set profile=demo !"context hatena-intern-2021
kubectl label namespace hatena-intern-2021 istio- injection=enabled kubectl get namespace hatena-intern-2021 -o yaml istio-injection enabled
: Istio kubectl apply -f https:!"raw.githubusercontent.com/istio/ istio/release-1.7/samples/addons/kiali.yaml Kiali kubectl apply
-f https:!"raw.githubusercontent.com/istio/ istio/release-1.7/samples/addons/prometheus.yaml Prometheus application istioctl dashboard kiali sign in admin:admin
Kiali
: fault injection 攐㲊ס嚀耆מ䙫㍲氳מ䷚꤃氦榟י䏅ꮶ疗㍱鐧ױ Injecting an HTTP abort fault renderer
service ( Service Temporarily Unavailable) fault %age Kiali application blog service error message istio-proxy log "authority": "renderer-go:50051" response_flags
: fault injection renderer service response 5 Kiali application istio-proxy
log response_flags kubectl delete virtualservices.networking.istio.io [໊લ] fault injection