Deploying Microservices with Spring Cloud to

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Matt Stine wrote a little cloud book...

FREE - Compliments of Pivotal

http://bit.ly/cloud-native-book

Download the PDF for free!

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Why is Cloud Foundry such an ideal deployment

platform for microservices?

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If you're smart, start with a

MONOLITH.4

Make it 12 Factor

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Eventually things get bigger...

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...and it becomes time to decompose.

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Microservices?

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Loosely coupled service oriented architecture with

bounded contexts...— Adrian Cockcroft

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You must be this tall to use Microservices

• RAPID PROVISIONING

• BASIC MONITORING

• RAPID APPLICATION DEPLOYMENT

• DEVOPS CULTURE

http://martinfowler.com/bliki/MicroservicePrerequisites.html

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A Symbiotic Relationship

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Platform Features• Environment Provisioning

• On-Demand Scaling

• Failover/Resilience

• Routing/Load Balancing

• Data Service Operations (BOSH)

• Monitoring

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No Microserviceis an Island

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Some Challenges of Distributed Systems• Configuration Management

• Service Registration & Discovery

• Routing & Load Balancing

• Fault Tolerance

• Monitoring

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We need a representation of the composite system!

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The BIG A App

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---memory: 512Minstances: 1no-route: trueservices: - cloudamqp-autoscaleapplications:- name: worker-process path: worker-process/build/libs/worker-process.jar- name: producer-process path: producer/build/libs/producer.jar- name: autoscaler-process path: autoscaler/build/libs/autoscaler.jar- name: autoscale-monitor no-route: false host: autoscale-monitor-${random-word} path: monitor/build/libs/monitor.jar

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Staticvs.

Dynamic18

Like BOSH, but for microservices?

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DecentralizedAutonomousCapability

Teams / Services20

You write it, you run it!

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Spring CloudDistributed System Patterns FTW!

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App/ServiceLevel

Patterns24

Deploying/Running Apps

vs.Composing Fault Tolerant Systems

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Spring Cloud + Netflix OSS• Config Server / Cloud Bus

• Eureka (Service Registry)

• Ribbon (Load Balancer)

• Hystrix (Circuit Breakers)

• Zuul (Intelligent Routing)

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Works on Lattice too!

https://lattice.cf27

Config Server

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Config Server + Cloud Bus

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DEMO30

Eureka (Service Registry)

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DEMORibbon (Load Balancer)

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Before cf_release v204

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cf_release v195"CF_INSTANCE_INDEX"=>"0","CF_INSTANCE_IP"=>"1.2.3.4","CF_INSTANCE_PORT"=>"5678","CF_INSTANCE_ADDR"=>"1.2.3.4:5678","CF_INSTANCE_PORTS"=>[{external:80,internal:5678}]

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cf_release v204properties: dea_next: allow_host_access: true

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After cf_release v204

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DEMO37

Hystrix (Circuit Breaker)

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DEMO39

Zuul (Intelligent Routing)

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DEMO41

Spring Cloud FUTURES• Alternative Stacks (Consul, Zookeeper, etcd, JRugged, ...)

• Distributed Request Tracing/Correlation (i.e. Dapper/Zipkin)

• Stateful Patterns (Leader Election, Locks, State Machine)

• Developer Workflow Improvements

• Switches (Canaries, Feature Toggles, Surgical Routing, ...)

• ???

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Learn MOAR• http://cloud.spring.io

• http://spring.io/blog/2015/04/06/lattice-and-spring-cloud-resilient-sub-structure-for-your-cloud-native-spring-applications

• http://lattice.cf

• http://netflix.github.io

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THANK YOU• THIS TALK: https://github.com/pieterhumphrey/devoxxPL

• DEMOS: https://github.com/mstine/intro-spring-cloud-workshop/tree/lattice

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