Concevoir et déployer vos applications à base de microservices sur Cloud Foundry

Transcription

1 Concevoir et déployer vos applications à base de microservices sur Cloud Foundry Spring Cloud micro services + Cassandra dans Cloud Foundry 26 mai 2015 Didier Burkhalter Field Engineer 1

2 Cloud Foundry France meetup Cloud Foundry France est une communauté qui encourage les discussions, les sessions techniques et le networking entre ses membres, constitués de développeurs, programmeurs, architectes, ingénieurs, consultants et chefs de projets partageant un intérêt commun pour le PaaS open source Cloud Foundry et la fondation Cloud Foundry. Cloud Foundry France encourage les échanges d idées et le partage d informations entre les utilisateurs et acteurs de l'éco système Cloud Foundry. 2

3 Concevoir et déployer vos application à base de microservices sur Cloud Foundry L'adop'on)des)modèles)d'architecture)à)base)de)microservices)et)"cloud9na've") perme:ent)la)créa'on)rapide)d'applica'ons)modernes)et)scalables.))) La)session)illustrera:)) 9)pourquoi)le)choix)des)microservices,)quels)en)sont)les)challenges,)comment) u'liser)les)modèles)des)géants)du)net)comme)neclix)?)) 9)comment)construire)une)applica'on)à)base)de)micro9services)avec)les)services) Spring)Cloud)NeClix)Eureka/Service)Discovery))et)Hystrix/Circuit)Breaker)) 9)comment)déployer)et)opérer)votre)applica'on)micro)services)sur)une)plate9 forme)de)paas)pivotal)cloud)foundry!) 3

4 Agenda! Les)micro)services,)quelles)défini'ons)?)! Quels)challenges)! Pourquoi)le)choix)des)microservices)! S inspirer)et)u'liser)les)modèles)de)neclix)?)! Construire)une)applica'on)à)base)de)micro9services)avec)les) services)spring)cloud)neclix)eureka/service)discovery))et)hystrix/ Circuit)Breaker))! Déployer)votre)applica'on)micro)services)sur)une)plate9forme)de) PaaS)Pivotal)Cloud)Foundry))! Q)/)R) 4

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6 Microservice: une définition If every service has to be updated in concert, it s not loosely coupled! Loosely coupled service oriented architecture with bounded contexts Adrian Cockcroft, former Netflix Chief Cloud Architect If you have to know about surrounding services you don t have a bounded context. 6

7 Microservice: Bounded Context 7

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9 Not Monoliths HTML JavaScript MVC Service Service Browser Data Access Monolithic Application Relational Database 9

10 Monolithic Architectures «Easy» but complex Modularity Dependent Upon Language / Frameworks Change Cycles Tightly Coupled / Obstacle to Frequent Deploys Inefficient Scaling Can be Intimidating to New Developers Obstacle to Scaling Development Requires Long-Term Commitment to Technical Stack 10

11 How you should scale 11

12 Organize Around Business Capabilities Siloed Functional Teams UI Specialists Middleware Specialists DBAs Crossfunctional Teams Business Capability Business Capability Business Capability Siloed Application Architectures HTML JavaScript MVC Service Service Microservice Architectures Data Access 12

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14 Microservices Overview 14

15 Microservice Architecture HTTP HTTP Relational DB HTTP HTTP Key/Value Store HTTP HTTP HTTP AMQP AMQP Graph DB 15

16 Microservice Architectures «Simple» system / Hard to work with Modularity Based on Component Services Change Cycles Decoupled / Enable Frequent Deploys Efficient Scaling Individual Components Less Intimidating to New Developers Enables Scaling of Development Eliminates Long-Term Commitment to Technical Stack 16

17 But Microservices! 17

18 Enabling Continuous Delivery Product Mgr UX Dev QA DBA Self Service API Sys Admin Net Admin Storage Admin BUSINESS CAPABILITY TEAMS USING MICROSERVICES PLATFORM OPERATIONS TEAM Adapted from: 18

19 But no Microservice is an Island 19

20 The Dark side of distributed systems! Configuration Management! Service Registration & Discovery! Routing & Load Balancing! Fault Tolerance (Circuit Breakers!)! Monitoring! Multiple remote calls, entity relationships See the Great article by Chris Richardson : microservices-intro 20

21 Spring Cloud Unless otherwise indicated, these slides are Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license:

22 Dedicated Spring Cloud Netflix module 22

23 Eureka Hystrix + Turbine Ribbon Feign Zuul Netflix OSS

24 Breaking the Monolith Service A Service C Service B 24

25 Now microservices HelloServer HelloClient Service C 25

26 Client Finding services???? 26

27 1.Register Service Discovery Eureka 2.Discover HelloServer HelloServer Producer 3.Connect HelloClient Consumer 27

28 Running a public class EurekaApplication { } public static void main(string[] args) { SpringApplication.run(EurekaApplication.class, args); } 28

29 Passport ribbon Round robin Contact #1 Contact #2 Contact #3 Client load Balancing ribbon 29

30 Service B Service A Cascading faults 30

31 Service B Service A Fallback Circuit breaker hystrix 31

32 Service Registration/Discovery 32

33 Demo!

34 Copyright 2015 Pivotal 2015 Software, Pivotal.Inc. All rights All rights reserved. reserved. 34

35 Paying for your lunch! Significant Operations Overhead! Substantial DevOps Skills Required! Implicit Interfaces! Duplication of Effort! Distributed System Complexity! Asynchronicity is Difficult!! Testability Challenges 35

36 It takes a platform Cloud Foundry Spring Cloud Services 36

37 Cloud Foundry: Open PaaS Clouds'publics' Clouds'privés' Mul0ples' Distribu0ons' CUSTOM RUNTIMES CUSTOM SERVICES Code Open Source Fondation Cloud Foundry & Gouvernance 37

38 Cloud Foundry Features / Service suite! Environment Provisioning! On-Demand/Automatic Scaling! Failover/Resilience! Routing/Load Balancing! Data Service Operations Spring Cloud Services! Monitoring Config Server Service Registry Circuit Breaker Dashboard 38

39 μservices with BETA To come soon In-App Support Libraries Bindable Services 39

40 Published March 16, 2015 Available to you compliments of Pivotal! 40

41 Where to start? 41

42 Bibliographie / sources! h:p://cloud.spring.io/spring9cloud9neclix/spring9cloud9neclix.html)! h:p:// Mar'n)Fowler):)h:p://mar'nfowler.com/ar'cles/microservices.html)! h:ps://github.com/ms'ne)! Adrian)CockcroX,)Chief)Cloud)Architect,)NeClix:)h:ps://vimeo.com/ )! Domain9Driven)Design:)Tackling)Complexity)in)the)Heart)of)SoXware)! h:p://blog.pivotal.io/podcasts9pivotal/features/pivotal9conversa'ons9so9isnt9 microservices9just9soa9with9json)! h:p:// h:p://tech.gilt.com/post/ /making9architecture9work9in9microservice) 42

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