SevillaJUG - Unleash the power of your applications with Micronaut® ,GraalVM and the Oracle DB
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The document introduces Micronaut, a modern Java framework that leverages annotation processors and optimizations to compute infrastructure at compile-time, reducing startup time and memory usage. It highlights key Micronaut features like dependency injection, configuration, HTTP client/server, messaging, data access, security, and integration with GraalVM Native Image to compile applications ahead-of-time. The document also provides an overview of GraalVM and demonstrates how Micronaut applications compiled with GraalVM have very low resource usage and fast startup times.
![Micronaut is the fastest to startup
35 Copyright © 2022, Oracle and/or its affiliates | Confidential: Internal/Restricted/HighlyRestricted [Date]
Source: https://speakerdeck.com/mraible/comparing-native-java-rest-api-frameworks-jcon-2023](https://image.slidesharecdn.com/sevillajug-micronaut-graalvm-oracle-db-240215230052-cd3e9128/85/SevillaJUG-Unleash-the-power-of-your-applications-with-Micronaut-GraalVM-and-the-Oracle-DB-35-320.jpg)
![Micronaut is the fastest to startup
36 Copyright © 2022, Oracle and/or its affiliates | Confidential: Internal/Restricted/HighlyRestricted [Date]
Source: https://speakerdeck.com/mraible/comparing-native-java-rest-api-frameworks-jcon-2023](https://image.slidesharecdn.com/sevillajug-micronaut-graalvm-oracle-db-240215230052-cd3e9128/85/SevillaJUG-Unleash-the-power-of-your-applications-with-Micronaut-GraalVM-and-the-Oracle-DB-36-320.jpg)
![Micronaut consumes the less memory
37 Copyright © 2022, Oracle and/or its affiliates | Confidential: Internal/Restricted/HighlyRestricted [Date]
Source: https://speakerdeck.com/mraible/comparing-native-java-rest-api-frameworks-jcon-2023](https://image.slidesharecdn.com/sevillajug-micronaut-graalvm-oracle-db-240215230052-cd3e9128/85/SevillaJUG-Unleash-the-power-of-your-applications-with-Micronaut-GraalVM-and-the-Oracle-DB-37-320.jpg)
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SevillaJUG - Unleash the power of your applications with Micronaut® ,GraalVM and the Oracle DB
- 1. Unleash the power of your applications with Micronaut® ,GraalVM and the Oracle DB Juarez Álvares Barbosa Junior Senior Principal Java Developer Evangelist Oracle @juarezjunior
- 2. Juarez Álvares Barbosa Junior Senior Principal Java Developer Evangelist • Coming from Dublin, Ireland • Developer since 1995 (Java ☕️ 1997) • 28 years of experience in SW Engineering & DevRel • Microsoft, Oracle, IBM, Nokia, Unisys, Accenture, startups • Microsoft Azure Developer Relations Lead • IBM Watson Tech Evangelist & Cloud Rockstar • IBM Mobile Tech Evangelist & Global Thought Leader • Nokia Developers Global Champion • Java, Python, Cloud, DevOps, SRE, Cloud-native, IoT, AI, Blockchain, Rust • Speaker at conferences • Oracle CloudWorld, Oracle Code, Microsoft Ignite, Microsoft TechX, jPrime, GeeCon, JCON, DevConf.cz, DevOpsDays, DeveloperWeek, DevOps Institute, CloudLand, DWX, The Developer’s Conference (TDC), Sec4Dev, JSNation, NodeConf, Conf42, Shift Conf, Global Azure, Open-Source Lisbon, CodeFrenzy, Mêlée Numérique, React Summit, Test.js Summit, Pyjamas, JUGs, meetups, etc. @juarezjunior @juarezjunior
- 3. Slides available on slideshare 3 Copyright © 2022, Oracle and/or its affiliates
- 4. Copyright © 2022, Oracle and/or its affiliates. Micronaut® is a registered trademark of Object Computing, Inc. Use is for referential purposes and does not imply any endorsement or affiliation with any third-party product. 4
- 5. Introduction to Micronaut Copyright © 2022, Oracle and/or its affiliates 5 Micronaut is a complete solution for any type of application: microservices, message-driven producers or consumers, command-line apps, serverless functions, etc. All application types Micronaut leverages Java annotation processors and other optimisations to compute the framework infrastructure at compile- time, drastically reducing startup time and memory consumption. Highly optimised Modern Java Framework Micronaut has been designed from scratch in 2017, focused on modern architectures like microservices and serverless, and with the cloud in mind.
- 6. Micronaut computes at build time: • All dependency and configuration injection. • Annotation metadata (meta annotations) • AOP proxies. • Bean introspections. • All other framework infrastructure. At runtime: • No reflection. • No proxy generation. • No dynamic classloading. • No classpath scanning. AOT: Ahead Of Time Copyright © 2022, Oracle and/or its affiliates 6
- 7. 7 Any language, build tool, test framework, reactive library, cloud, … Copyright © 2022, Oracle and/or its affiliates
- 8. Micronaut features 1. Dependency injection. • Can use JSR-330 (@Inject) or Spring (@Autowired) annotations. 2. Configuration. • Properties, YAML, TOML, Groovy, Config4K. 3. Validation support. • Built-in: reflection-free, faster startup, smaller JAR, reduced memory. • Hibernate Validation: full Bean Validation API compliance. 4. AOP: Aspect-Oriented Programming. • Compile-time, reflection-free. 8 Copyright © 2022, Oracle and/or its affiliates
- 9. Micronaut features: HTTP Server 9 Copyright © 2022, Oracle and/or its affiliates
- 10. Micronaut features: HTTP Client 10 Copyright © 2022, Oracle and/or its affiliates Implemented at compile time
- 11. Micronaut features: message-driven applications Kafka • Producers. • Consumers. • Kafka Streams. RabbitMQ • Producers. • Consumers. • RPC. MQTT • Publishers. • Subscribers. NATS • Producers. • Consumers. Copyright © 2022, Oracle and/or its affiliates 11
- 12. Micronaut features: data access 12 Copyright © 2022, Oracle and/or its affiliates
- 13. Micronaut features: data access 13 Copyright © 2022, Oracle and/or its affiliates Interface implemented at compile time Query generated from the method name, compile- time validated Can have custom queries, inserts, etc
- 14. Micronaut: Java App Dev with Oracle Database 14 Copyright © 2022, Oracle and/or its affiliates
- 15. Micronaut + Oracle DB: Supporting all Java DB Connectivity types 15 Copyright © 2022, Oracle and/or its affiliates
- 16. Micronaut features: security 1. Authentication providers. • Bult-in support for LDAP and OAuth 2.0 password grant flow. 2. Security rules. • Configuration or annotation-based. 3. Authorization strategies. • Basic auth, session, JWT (JWKS, JWS), X.509. 4. OAuth 2.0. • Authorization code, client credentials and password grants. • OpenID Connect. • Ease of integration with providers such as Okta, Auth0, AWS Cognito, Keycloak and more. 16 Copyright © 2022, Oracle and/or its affiliates
- 17. Micronaut features: misc 1. Distributed Tracing. • Zipkin, Jaegger. 2. Service Discovery and Distributed Configuration. • Consul, Eureka, Kubernetes. 3. Monitoring. • Micrometer, JMX, Elasticsearch. 4. API development. • GraphQL, GRPC, Open API. 5. Containers. • Docker, Kubernetes, Testcontainers. 6. Cache. • Jcache, Redis, Ehcache, Hazelcast, Infinispan, Oracle Coherence. 7. Email. 8. Error handling. 17 Copyright © 2022, Oracle and/or its affiliates
- 18. Getting Started: Micronaut Launch 18 Copyright © 2022, Oracle and/or its affiliates https://launch.micronaut.io
- 19. Getting Started: Micronaut CLI 19 Copyright © 2022, Oracle and/or its affiliates
- 20. Getting started: Intellij IDEA 20 Copyright © 2022, Oracle and/or its affiliates
- 21. Getting started: Visual Studio Code 21 Copyright © 2022, Oracle and/or its affiliates
- 22. Micronaut 4 1. Java 17 required • Virtual threads support (Project Loom). • New HTTP Virtual threads support (Project Loom). • @Client implementation based on java.net.http.HttpClient (JEP 321) • For older versions of Java use Micronaut 3.x. • Other languages • Kotlin 1.8, KSP support. • Apache Groovy 4. 2. Micronaut Data v4 • Hibernate 6. 22 Copyright © 2022, Oracle and/or its affiliates
- 23. Micronaut 4 3. Smaller, lighter runtime. • Performance closer to raw Netty (~200ms startup). • Some modules spun off core: Service Discovery, Retry, Session, Validation, Websocket. • Some dependencies now optional: Jackson, SnakeYAML. 4. Other features: • HTTP client/server filter methods: annotation-based and without reactive APIs. • Annotation-based CORS configuration. • HTTP/3 support. • Use of GraalVM metadata repository. • Prefer Micronaut Serialization over Jackson. • Disabled cloud environment deduction by default. 23 Copyright © 2022, Oracle and/or its affiliates
- 24. Micronaut 4 5. Compile-time expression language 24 Copyright © 2022, Oracle and/or its affiliates Checked at compile time Checked at compile time
- 25. Micronaut 4 5. Compile-time expression language 25 Copyright © 2022, Oracle and/or its affiliates
- 26. Micronaut 4 Control Panel 26 Copyright © 2022, Oracle and/or its affiliates
- 27. Copyright © 2022, Oracle and/or its affiliates 27 Graal Cloud Native (GCN)
- 28. What is Graal Cloud Native? Copyright © 2023, Oracle and/or its affiliates 28 BUILT FOR GRAALVM NATIVE IMAGE Easily compile ahead-of-time with GraalVM Native Image into small executables that start instantly, and use less memory/CPU. CLOUD-AGNOSTIC MODULES A curated set of Micronaut modules that provide platform-independent support for core cloud services – object store, secrets, streaming, and more. DEV TOOLS AND VS CODE EXTENSIONS Dev tools to generate multicloud application starter templates. VS Code extensions for local development and cloud deployment.
- 30. Copyright © 2022, Oracle and/or its affiliates 30
- 31. What is GraalVM 31 Copyright © 2022, Oracle and/or its affiliates
- 32. Native Image Goals Low Resource Usage Start Fast Compact Packaging Minimize Vulnerability Copyright © 2023, Oracle and/or its affiliates 32
- 33. Micronaut and GraalVM 6ms As low as startup time 18MB Consuming memory footprint >30% Increased throughput up to and reduced latency
- 34. Micronaut and GraalVM 1. The best integration possibly, supported by teams working together at Oracle Labs. • GraalVM EE includes optimisations for Micronaut for increased performance and throughput. • GraalVM EE license included in Oracle Cloud. 2. Micronaut is ready for GraalVM Native Image since day 1. • No reflection, no runtime proxies, no bytecode generation, no dynamic classloading. 3. GraalVM Extenstion Pack for Visual Studio Code. 34 Copyright © 2022, Oracle and/or its affiliates
- 35. Micronaut is the fastest to startup 35 Copyright © 2022, Oracle and/or its affiliates | Confidential: Internal/Restricted/HighlyRestricted [Date] Source: https://speakerdeck.com/mraible/comparing-native-java-rest-api-frameworks-jcon-2023
- 36. Micronaut is the fastest to startup 36 Copyright © 2022, Oracle and/or its affiliates | Confidential: Internal/Restricted/HighlyRestricted [Date] Source: https://speakerdeck.com/mraible/comparing-native-java-rest-api-frameworks-jcon-2023
- 37. Micronaut consumes the less memory 37 Copyright © 2022, Oracle and/or its affiliates | Confidential: Internal/Restricted/HighlyRestricted [Date] Source: https://speakerdeck.com/mraible/comparing-native-java-rest-api-frameworks-jcon-2023
- 38. Micronaut and GraalVM powering Disney+ 38 Copyright © 2022, Oracle and/or its affiliates https://aws.amazon.com/blogs/opensource/improving-developer-productivity-at-disney-with-serverless-and-open-source/
- 39. Micronaut and GraalVM powering Disney+ 39 Copyright © 2022, Oracle and/or its affiliates
- 40. Copyright © 2022, Oracle and/or its affiliates 40 Demo Micronaut, Micronaut Data, GraalVM, Oracle DB
- 41. Copyright © 2022, Oracle and/or its affiliates References • Micronaut • Guide - https://docs.micronaut.io/latest/guide/ • Config Reference - https://docs.micronaut.io/4.1.9/guide/configurationreference.html • Javadocs - https://docs.micronaut.io/latest/api/ • Micronaut 4 - https://rb.gy/8236b • GraalVM • Overview - https://www.graalvm.org/latest/docs/introduction/ • Getting Started - https://www.graalvm.org/latest/docs/getting-started/ • Guides - https://www.graalvm.org/latest/guides/ • GraalVM for JDK 21 - https://medium.com/graalvm/graalvm-for-jdk-21-is-here-ee01177dd12d • GCN - Graal Cloud Native • GCN - Graal Cloud Native - https://www.graal.cloud/gcn/ • Graal Cloud Native Extensions Pack - https://rb.gy/ab105 • Micronaut Tools - Micronaut Tools - Visual Studio Marketplace • Develop Java applications with Oracle Database • JDBC, R2DBC, RSI - https://www.oracle.com/database/technologies/appdev/jdbc.html