JavaEE Microservices platforms
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Presentation from JDays discussing JavaEE implementation of Microservices on Payara Micro, Spring Boot and WildFly Swarm
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JavaEE Microservices platforms
- 1. Java EE Microservice platforms - which is best? Steve Millidge – Founder Payara
- 2. The Best is?
- 3. Get Serious • What is a Microservice • Features of the platforms • Experiences in Use
- 4. What is a Microservice? In computing, microservices is a software architecture style in which complex applications are composed of small, independent processes communicating with each other using language-agnostic APIs. Wikipedia
- 5. What is a Microservice? The term "Microservice Architecture" has sprung up over the last few years to describe a particular way of designing software applications as suites of independently deployable services. While there is no precise definition of this architectural style, there are certain common characteristics around organization around business capability, automated deployment, intelligence in the endpoints, and decentralized control of languages and data. Martin Fowler
- 6. Some Principles of MicroServices • Componentization via Services • Independently replaceable and upgradable • Organized around Business Capabilities • One team one capability across the stack • Products not Projects • Team manages the whole lifecycle of the service(s) • Independent Replacement and Upgradeability • Infrastructure Automation • Decentralized Data Management
- 7. Micro Service Architecture Customers Shipping Product Catalogue Billing Warehouse Loyalty Card Stock Control Offers Discounts Stock Control Offers Discounts Warehouse Product CatalogueCustomers Shipping Billing Product Catalogue Product Catalogue Product Catalogue Customers Customers Shipping Loyalty Card
- 8. FUD! You can’t build microservice architectures with Java EE. It is heavyweight and monolithic.
- 9. Why Java EE and not ######? • Java EE is incredibly lightweight • Rapid to develop • Majority of alternative Java frameworks based on Java EE apis • Concentrate on building business functionality • Produces small skinny wars • Versioned runtime – aids operations
- 12. Payara Micro • Derived from GlassFish Open Source • Key Design Goals • Elastic (auto clustering) • Container Friendly (no installation) • Small Footprint • Very Easy to Use (no maven messing) • Run wars on the command line
- 13. WildFly Swarm • Derived from WildFly • Flexible • Specify components with maven dependencies • Generates Uber Jar • Integrates with other Red Hat projects • Java EE based • Integrates with Service Discovery
- 14. Spring Boot • Encapsulates Spring • Creates Standalone Spring Applications • Embeds Runtime • Jetty, Tomcat, Undertow • Opinionated Starter POMs • Automatically Configures itself • No XML • Provides production ready capabilities
- 15. Code Walkthrough
- 16. Platforms Tested Feature Payara Micro WildFly Swarm Spring Boot Composable X √ √ Requires Platform Knowledge X X √ Needs Maven X √ √ File Size 60MB + 1MB war 100MB 26MB Boot Time 4s 4s 4s Memory (full GC) 34MB Meta 63MB 35MB Meta 83MB 44MB Meta 51MB Embeddable API √ √ √
- 17. Payara Micro Thoughts I’ll leave that to you as I wrote it!!!
- 18. SpringBoot • Very Simple to learn • Marginally different from JavaEE • Slightly different REST annotations • Small Footprint • Fast Startup • Smallest jar size but could grow depending on needs • Slightly larger memory footprint • Good composability • I didn’t have to figure it out
- 19. WildFly Swarm • A little complexity in composing dependencies • Repeatedly failed for a while • Needed jaxrs-weld not jaxrs + weld ! • After all that largest jar • Small Footprint • Fast Startup • Small Memory Footprint
- 20. Conclusions • No Real Advantage to assembling your container • ALL Solutions • Lightweight • Small Footprint • Fast • Choose what you are Familiar with • If you know Spring stick with Spring • If you know JavaEE, JavaEE does microservices. • Java EE apps are cross container • Including datasource definition
- 22. Questions