Introducing Micronaut

Unconference at JJUG CCC 2019 Spring

Transcript

1. Introducing Micronaut
   2019-05-18 JJUG CCC 2019 Spring
   Mitsuyuki Shiiba @bufferings
   

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2. Micronaut
   https://micronaut.io/
   accessed on May 19th, 2019
   

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3. Framework for microservices
   These are matters for microservices:
   ● Startup Time
   ● Memory Footprint
   ● Throughput
   

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4. Micronaut - who developed it?
   ● developed by the creators of the Grails framework
   ● inspired by Spring, Spring Boot and Grails
   ● backed by Object Computing, Inc. (OCI)
   

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5. Micronaut - the way
   ● Compile time DI & AOP
   ● Reactive & Non-Blocking Support for HTTP Server & HTTP Client
   

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6. Micronaut - characteristics
   ● POLYGLOT FRAMEWORK: Java, Groovy, Kotlin
   ● GraalVM Support
   

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7. Micronaut - for me
   ● Good Documents
   ● Easy to start with CLI(mn) to generate applications
   ● Easy to understand for those who are used to Spring Boot
   ○ Controller
   ○ Configuration
   ○ Constructor Injection
   ○ etc
   ● Improvement speed is so fast
   

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8. DEMO
   ● Spring PetClinic
   ○ https://github.com/spring-projects/spring-petclinic
   ● Micronaut PetClinic
   ○ https://github.com/bufferings/micronaut-petclinic
   

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9. DEMO - result on my laptop
   very rough values
   Spring Boot Micronaut Micronaut (Native)
   Build 10 s 15 s 15 m
   Startup time 9 s 4 s 600 ms
   

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10. Rerference
    ● Micronaout を試した JJUG CCC 2018 Spring LT by @kencharos
    ● Devoxx UK 2019 - Cloud-native Microservices with Micronaut
    ● Short comparison: Building Graal Native Images with Quarkus, Micronaut and
    Helidon
    

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