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何故私達はサーバレスアプリケーションをイベントドリブンで作るべきなのか / Why shoul...

何故私達はサーバレスアプリケーションをイベントドリブンで作るべきなのか / Why should we make serverless application as event driven?

Masashi Terui

May 24, 2018
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  1. SERVERWORKS CO.,LTD. + FREELANCER • Serverless Oji-san • Serverless Framework

    Plugin Developer • Serverlessconf Tokyo 2016/2017 speaker • Remote worker (in Sapporo) • The best Cloud Engineer in Hokkaido!! (Ͱ͋Γ͍ͨʣ MASASHI TERUI ARCHITECT / DEVELOPER
  2. CNCF SERVERLESS WHITEPAPER V1.0 • Serverless computing refers to the

    concept of building and running applications that do not require server management • A platform may provide one or both of the following: • Functions-as-a-Service (FaaS) • Backend-as-a-Service (BaaS) • Products or platforms deliver the following benefits to developers: • Zero Server Ops • No Compute Cost When Idle 
 https://github.com/cncf/wg-serverless/tree/master/whitepaper
  3. SERVERLESS USE CASES (FROM CNCF WP) • Asynchronous, concurrent, easy

    to parallelize into independent units of work • Infrequent or has sporadic demand, with large, unpredictable variance in scaling requirements • Stateless, ephemeral, without a major need for instantaneous cold start time • Highly dynamic in terms of changing business requirements that drive a need for accelerated developer velocity • Non-HTTP-centric and non-elastic scale workloads that weren’t good fits for an IaaS, PaaS, or CaaS solution
  4. ΋͏͢͜͠ৄ͘͠ • Pub/Subͷؔ܎ • Publisher͸ൃߦ͢΂͖Πϕϯτ͚ͩΛ஌͍ͬͯΔ • Subscriber͸ߪಡ͢΂͖Πϕϯτ͚ͩΛ஌͍ͬͯΔ • ґଘؔ܎ΛૄͰ͋Γͳ͕Βू໿ɺ੔ཧͰ͖Δ •

    ͜ͷؔ܎͸ٯస͠ͳ͍ͨΊɺྲྀΕ͕෼͔Γ΍͘͢ͳΔ • ࣗવͱඇಉظʹͳΔ • ඇಉظͰ͋Δͱ͍͏͜ͱ͸ϦτϥΠՄೳͰ͋Δͱ͍͏͜ͱ
  5. Simple Nortification Service (SNS) • PushܕΠϕϯτιʔεͷ୅ද֨ • 1:NͷN͕ଟ͘ͳΔέʔεʹڧ͍ (Fanout) •

    ͚ͬ͜͏୔ࢁ࢖͏ͷͰ
 Serverless Frameworkͱ͔࢖Θͳ͍ͱઃఆ͕͠ΜͲ͍
  6. ʢ͓·͚ʣLambda -> Lambda • جຊ΍Βͳ͍ʢࢲ͸ʣ • େମSNSڬΉ or ਺चܨ͗ʹͳΔͳΒStep FunctionsΛ࢖͏

    • 1:1͕100%อূͰ͖Δ৔߹ͷΈ࢖ͬͯ΋ྑ͍ʢ͔΋ʣ • Ͱ΋ͦΕ1FunctionͰྑ͍Μ͡Όɾɾɾ