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Spring Native : Why not YET!
- 1. SPRING NATIVE WHY NOT YET!
- 2. #DevoxxUK | #SpringNative @iamsoham 2 SOHAM DASGUPTA Father and Football lover Tech Enthusiast/Programmer/Architect Speaker & Blogger Twitter : @iamsoham LinkedIn: dasguptasoham Github: sohamda Medium: @iam.soham
- 3. #DevoxxUK | #SpringNative @iamsoham 3 QUICK TOUR OF Native? What is it exactly! Ok! How to build one? Yeah, what did we achieved Ok, then why NOT
- 4. #DevoxxUK | #SpringNative @iamsoham 4 NATIVE • JVM based code, compiled ahead-of-time to a standalone executable. • Results into faster startup, low memory footprint and high performance. • Well suited for sustainable microservice architectures. • The Native Image builder is a utility that processes all classes of an application and their dependencies, including those from the JDK.
- 5. #DevoxxUK | #SpringNative @iamsoham 5 SPRING NATIVE Spring Native provides beta support for compiling Spring applications to native executables using GraalVM native-image compiler.
- 6. #DevoxxUK | #SpringNative @iamsoham 6 RESULTS INTO! Image Size Startup time Memory footprint
- 7. #DevoxxUK | #SpringNative @iamsoham 7 WAIT..GRAALVM LIMITATIONS! • Dynamic Class loading • Class.forName(myClass) • Reflection • Dynamic Proxy • java.lang.reflect.Proxy.getProxyClass(ClassLo ader, Class<?>[]) • JNI (Java Native Interface) • Serialization • Class initializers • FInalizer • java.lang.Object.finalize() • Also deprecated since Java 9 • Thread.stop() • Debugging and Monitoring • JFR Can be managed via a config file Just not possible https://www.graalvm.org/22.0/reference-manual/native-image/Limitations/
- 8. #DevoxxUK | #SpringNative @iamsoham 8 SPRING NATIVE – BACKLOG Things are in pipeline and NOT avialable yet • Spring Cloud Gateway • AOP, Kafka Streams, ActiveMQ (not fully) • Liquibase, Flyway • Spring GraphQL, SOAP • Log4j2, OpenFeign • .... • Take a look : https://github.com/spring-projects-experimental/spring-native/milestones
- 9. #DevoxxUK | #SpringNative @iamsoham 9 YOU CAN DO A LOT..STILL! A larger part of your application just will run seamlessly • Webmvc, flux • Cloud functions • Elastic, JDBC, JPA, Mongo, Neo4j, Hibernate • Kafka, Streams, RabbitMQ • Lombok • gRPC • Thymeleaf.. • Check out : https://github.com/spring-projects-experimental/spring-native/tree/main/samples
- 10. #DevoxxUK | #SpringNative @iamsoham 10 YOU CAN DO A LOT..STILL! A sample architecture with Spring Native and GraalVM image that you can run without any issues
- 11. This presentation contains information that may be privileged or confidential and is the property of the Capgemini Group. Copyright © 2022 Capgemini. All rights reserved. About Capgemini Capgemini is a global leader in partnering with companies to transform and manage their business by harnessing the power of technology. The Group is guided everyday by its purpose of unleashing human energy through technology for an inclusive and sustainable future. It is a responsible and diverse organization of over 325,000 team members more than 50 countries. With its strong 55-year heritage and deep industry expertise, Capgemini is trusted by its clients to address the entire breadth of their business needs, from strategy and design to operations, fueled by the fast evolving and innovative world of cloud, data, AI, connectivity, software, digital engineering and platforms. The Group reported in 2021 global revenues of €18 billion. Get The Future You Want | www.capgemini.com
Editor's Notes
- This executable includes the application classes, classes from its dependencies, runtime library classes, and statically linked native code from JDK. It does not run on the Java VM, but includes necessary components like memory management, thread scheduling, and so on from a different runtime system, called “Substrate VM”. Substrate VM is the name for the runtime components (like the deoptimizer, garbage collector, thread scheduling etc.). The resulting program has faster startup time and lower runtime memory overhead compared to a JVM. The Native Image builder or native-image is a utility that processes all classes of an application and their dependencies, including those from the JDK.
- Native Image uses a different way of executing Java programs than users of the Java HotSpot VM are used to. It distinguishes between image build time and image run time. At image build time, a static analysis finds all methods that are reachable from the entry point of the application. These (and only these) methods are then ahead-of-time compiled into a native image. Because of the different optimization model, Java programs can behave somewhat differently when compiled into a native image. https://www.graalvm.org/22.0/reference-manual/native-image/Limitations/