Peru JUG Micronaut & GraalVM
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Micronaut is a framework for building microservices that uses compile-time dependency injection and supports reactive programming and cloud native features. It can be used with GraalVM, an open source project that compiles Java applications ahead-of-time to native images for faster startup times and reduced memory usage. Together, Micronaut and GraalVM provide a lightweight and high-performance solution for building microservices that is well-suited for cloud environments.
Peru JUG Micronaut & GraalVM
- 1. Micronaut + GraalVM A match made in Cloud Native
- 3. Micronaut • Desarrollado por Object Computing (OCI) • Graeme Rocher (@GraemeRocher) • Diseñado para desarrollar Microservicios
- 4. Features • Compile time dependency injection. • First class support for reactive programming • Cloud Native • Service Discovery (Consul, Kubernetes, Eureka) • Distributed tracing (Zipkin, Jaeger) • Serverless functions
- 5. Dependency Injection • Micronaut builds its dependency injection data at compile time. • Fully supports JSR-330 annotations as well.
- 6. Persistence • JDBC support • JPA with Hibernate support • MongoDB • Neo4j • Redis • Cassandra
- 7. My thoughts • Very good alternative to Spring Boot • Simple, clean, small, lightweight. • Programming model very familiar (Spring, CDI) • Cloud Native ready! • Ideal for microservices • But… the JVM…
- 9. GraalVM • OpenSource project at Oracle Labs • Based in OpenJDK 8u • Polyglot • Native • Embeddable
- 10. • GraalVM offers a comprehensive ecosystem supporting a large set of languages (Java and other JVM-based languages, JavaScript, Ruby, Python, R, and C/C++ and other LLVM-based languages) and running them in different deployment scenarios (OpenJDK, Node.js, MySQL, Oracle Database, or standalone).
- 11. Java applications? • GraalVM runs Java applications faster, on the OpenJDK. • Ahead-of-time compilation for native images. • Insane startup times, reduce memory footprint… • Run scripting languages faster.
- 12. Performance as first class citizen • GraalVM compiler can remove costly object allocations in many scenarios • http://www.graalvm.org/docs/examples/java-performance-examples/ • Better inlining and more aggressive speculative optimizations can lead to additional benefits for complex long-running applications • https://www.graalvm.org/docs/examples/java-simple-stream-benchmark/
- 13. Native Image • Running applications in the JVM implies the status and footprint costs. • GraalVM allow us to generate a native image without those costs. • The image generation process employs static analysis to find any code reachable from the main Java method and then performs full ahead-of-time (AOT) compilation • The resulting native binary contains the whole program in machine code form for its immediate execution.
- 14. GraalVM in the real world • Twitter is running GraalVM for almost 2 years now. • Twitter is also contributing. • https://www.youtube.com/watch?v=pR5NDkIZBOA
- 15. Better together… • Micronaut supports GraalVM Native Image generation.
- 16. Demo time…