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Unless otherwise indicated, these slides are © 2013-2015 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ Cloud Native Apps with
 Spring Cloud Brian Clozel, Spring Framework committer, Pivotal Software inc. @brianclozel

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@brianclozel Brian Clozel http://spring.io/team/bclozel

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“Innovate and deliver faster
 than your competition

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Microservices?

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§ Distributed systems? § Microservices? § Cloud Native Apps?

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Monolith?

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“A global entity that handles state/ failure scenarios “A smart application server, everything included “Easy to turn into a mess…

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§ Complex system § Easy to work with § Modularity comes from language / framework § Inefficient scaling

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§ Long term commitment to technology § intimidating to new developers § obstacles to frequent releases

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Microservices?

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“Smart agents that should know how to handle failures “Smart services, dumb pipes “Harder to do right…

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§ Simple system § Harder to work with § Modularity based on component services § Scaling efficiently

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§ Easy to try new things § Less intimidating § Frequent deploys

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Spring Cloud

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Netflix OSS

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SPRING CLOUD

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Example:
 Coffee app.

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Breaking
 the
 Monolith Stores Customer Profile

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Customer
 name and
 location Customer

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List of stores
 with
 geo search Store

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Customer
 info and
 nearest stores Profile

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Now Microservices Customer Profile Store

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Finding Services ? ?

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Profile Eureka Customer Store Service Discovery
 Eureka customer store

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Profile Customer #3 Tied to
 single
 instance? Customer #2 Customer #1

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Profile Eureka customer ? customer:
 - instance #1 - instance #2 - …

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Instance #3 Client load balancing
 Ribbon Instance #2 Instance #1 Round robin, AWS zone affinity Ribbon

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service B Cascading Faults service A

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service B service A Circuit breaker
 Hystrix Fallback

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Configuration
 management

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Config
 Server Config Server Git repository

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Demos!