From Cloud-Native Java and Quarkus with Love @ DevNation Day India 2022

* Abstract:

Over the last couple of years, our industry faced many naysayers doubting that Java is ready for today's, let alone tomorrow's application development requirements. Too rigid, too fat, too slow, and too resource hungry were the usual suspects to question Java's "fitness" for developing cloud-native applications targeting Kubernetes. One day, Quarkus came along to demonstrate the exact opposite. Join this fast-paced session to learn about Quarkus, which is a new breed of Java application development framework. It builds upon well-established standards and technologies as well as battle-tested libraries, many of which you might already master or at least be familiar with. If you want to experience some of the goodness and love that Quarkus offers and brings to modern application development with Java, this talk is for you. After this session, you'll have a first impression about what it means and how it feels to develop supersonic subatomic Java applications.

* Recording: https://developers.redhat.com/devnation/devnationday-india-2022/from-cloud-native-java-quarkus

Transcript

1. 1 From Cloud-Native Java and with Love ❤ dn.dev/learn Hans-Peter Grahsl Developer Advocate Neha Gupta Associate Specialist Solution Architect
2. dn.dev/learn Hans-Peter Grahsl Developer Advocate @ Red Hat I’m an open-source enthusiast passionate about event-driven architectures, distributed stream processing systems and data engineering technologies. 🐦 Twitter: @hpgrahsl 📧 Email: hgrahsl@redhat.com 👋 Meet the Speakers 👋 Neha Gupta Associate Specialist Solution Architect I’m a App dev Specialist striving to make Open Source practical and workable for enterprises. Linkedin: linkedin.com/in/nehannn76 📧Email: nehgupta@redhat.com
3. dn.dev/learn Why Quarkus?
4. dn.dev/learn • Startup overhead ◦ # of classes, bytecode, JIT • Memory overhead ◦ # of classes, metadata, compilation 4 RSS Java Heap Metaspace Direct Code Internal Java in Containers
5. dn.dev/learn 5 µ µ µ µ µ µ µ µ µ µ µ µ µ µ µ µ Monolith Microservices λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ λ Functions Java beyond the Monolith
6. dn.dev/learn What is Quarkus?
7. dn.dev/learn Modern Java Stack Cloud Native (Micro)Services Serverless
8. dn.dev/learn ❤ Great Dev Experience
9. dn.dev/learn ❤ Great Dev Experience • live reload → don’t blink ;-) • many convenient dev services • hassle-free native executables
10. dn.dev/learn ❤ Imperative & Reactive • unified programming model • choose what best fits your use-case • combine both paradigms in same app
11. dn.dev/learn ❤ Containers First • optimized in disk size • faster startup times • lower mem/cpu usage
12. dn.dev/learn ❤ Containers First • optimized in disk size → small container images • faster startup times → instantaneous scale out • lower mem/cpu usage → higher deployment density
13. dn.dev/learn ❤ Kubernetes Native • metrics and health • debugging and tracing • config maps and secrets
14. dn.dev/learn ❤ Open Standards • CDI-based dependency injection • REST endpoints with JAX-RS • persistence with JPA annotations • JTA transaction boundaries … and many more!
15. dn.dev/learn On the shoulders of Giants et al.
16. dn.dev/learn How does Quarkus work?
17. dn.dev/learn Traditional vs. Quarkus Build Time Runtime Runtime Build Time
18. dn.dev/learn do more at build time work less at runtime
19. dn.dev/learn 2 Runtime Targets Build Time Native Executable JVM
20. dn.dev/learn Live Coding
21. dn.dev/learn https://code.quarkus.io
22. dn.dev/learn Free e-book
23. dn.dev/learn Start exploring in the OpenShift Sandbox. Learn containers, Kubernetes, and OpenShift in your browser. developers.redhat.com/developer-sandbox Try Red Hat's products and technologies without setup or configuration.
24. dn.dev/learn Thank you!
25. dn.dev/learn Join Red Hat Developer. Build here. Go anywhere. facebook.com/RedHatDeveloper youtube.com/RedHatDevelopers twitter.com/rhdevelopers linkedin.com/showcase/red-hat-developer