Cloud Native Java Microservices
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The document outlines the essentials of microservices architecture, comparing it with monolithic architecture, and discusses the role of Spring Boot and Spring Cloud in building cloud-native Java applications. It covers aspects such as service discovery, API gateways, and containerization for efficient application deployment. Additionally, it highlights tools and practices for developing and managing microservices in cloud environments.
Cloud Native Java Microservices
- 1. © 2016 Pivotal Software, Inc. All rights reserved. Cloud Native Java Microservices Kenny Bastani Spring Developer Advocate 1
- 2. Kenny Bastani @kennybastani Spring Developer Advocate
- 3. Agenda Agenda 1 Microservices & Cloud Native 2 Spring Boot 3 Spring Cloud 4 RESTful Microservices 5 Push to Cloud Foundry
- 4. © 2016 Pivotal Software, Inc. All rights reserved. Microservices 4
- 6. SOA - Service Oriented Architecture
- 7. Microservice Architecture • Each team gets one database and one service • Shared caches are platform provided services that are shared for consistency
- 11. © 2016 Pivotal Software, Inc. All rights reserved. Cloud Native Apps 11
- 12. Cloud Native & Microservices • Microservices are only a small part of a larger picture Cloud Microservices
- 15. © 2016 Pivotal Software, Inc. All rights reserved. Cloud Native Ops 15
- 16. Application Server Deployment - Monolith • Load balancing requires provisioning of new VMs and app server installations • Poor resource isolation; memory leaks can cause other applications to become unavailable • Runtime environment is driven by the operator Virtual Machine App Linux Kernel App App Hardware Infrastructure
- 17. Linux Container Deployment - Microservice • Development team drives the application runtime of a container • Containers are resource isolated, allowing efficient scheduling onto a grid of VMs • Containers take seconds to start, VMs take minutes • It’s not a rule that there is one microservice per container Virtual Machine Container Linux Kernel App App App App Container App App App App Container App App App App Hardware Infrastructure
- 18. Microservices - Container Deployment • Each microservice can be containerized with their application dependencies • Containers get scheduled on virtual machines with an allotted resource policy
- 19. Auto-scaling • Minutes to start a VM, but seconds to start a container • An elastic runtime handles auto-scaling of VMs with cloud providers
- 20. Orchestration • Each microservice needs to communicate outside containers • Service discovery provides an automatic method for finding other service dependencies
- 21. © 2016 Pivotal Software, Inc. All rights reserved. Cloud Native Java 21
- 22. © 2016 Pivotal Software, Inc. All rights reserved. Spring Boot A JVM micro-framework for building microservices 22
- 23. What is Spring Boot?
- 24. spring boot Spring Initializr for boostraping your applications supports rapid development of production-ready applications and services
- 26. Automatic Configuration • An application class is annotated with @SpringBootApplication • Additional annotations are added to indicate the role of the Spring Boot application
- 27. Spring Boot for Microservices
- 28. © 2016 Pivotal Software, Inc. All rights reserved. Spring Cloud A toolset designed for building distributed systems 28
- 29. spring cloud Apache Zookeeper these logos are all trademark/copyright their respective owners (T-B, L-R): Netflix, amazon.com, Apache Software Foundation, Cloud Foundry, Hashicorp they are ALL great organizations and we love their open-source and their APIs!! *
- 30. What is Spring Cloud? ✴ Service Discovery ✴ API Gateway ✴ Config Server ✴ Circuit Breakers ✴ Distributed Tracing
- 31. What is Spring Cloud? • Spring Cloud provides a way to turn Spring Boot microservices into distributed applications
- 32. Service Discovery & Intelligent Routing
- 35. API Gateway
- 36. © 2016 Pivotal Software, Inc. All rights reserved. RESTful Microservices 36
- 37. © 2016 Pivotal Software, Inc. All rights reserved. HATEOAS Hypermedia as the Engine of Application State (REST APIs that self-describe) 37
- 39. Richardson Maturity Model Photo credit: Packt Publishing
- 40. REST API Gateway • API gateway downloads routes from services exposing REST APIs • Each route of other microservices will be hosted on the API gateway • API gateway will automatically reverse proxy to backend services • Hypermedia allows traversing entire REST API description of microservices
- 42. ©2015 Apigee. All Rights Reserved. Each API call provides links
- 43. © 2016 Pivotal Software, Inc. All rights reserved. Cloud Foundry “To always be shipping, you need a shipyard.” 43
- 44. © 2016 Pivotal Software, Inc. All rights reserved. Application-centric opinionated platform Cloud Foundry 44
- 45. Push to Cloud Foundry • http://run.pivotal.io • Go to Spring Initializr, select Web • Name the artifactId hello-world • Add a @RestController named Hello • Return “Hello World” at the root endpoint • mvn clean install & cf push
- 46. © 2016 Pivotal Software, Inc. All rights reserved. Thanks! @kennybastani 46