IBM TechCon 2026 - Why Spring Developers should love Quarkus!

Spring dominates the Java landscape, but are you aware of other similar yet different frameworks out there?

Let me show you Quarkus, the new Java Jedi. I'll open up the cloak and dig into the inner workings of both Spring Boot and Quarkus, showing how the concepts and conventions familiar to Spring developers actually work. I'll show what Quarkus does with those same concepts and conventions to make it so resource efficient.

If someone asked you if you wanted to save 50% in your Java application operational costs, wouldn't you be interested? What if it involved close to zero effort? Come to this session to learn how!

Transcript

1. @edeandrea Eric Deandrea Sr. Principal Software Engineer IBM Developers
2. @edeandrea Who’s on Stage Today? Eric Deandrea 🤘 27+ years software development experience Java Champion 🤘 Contributor to Open Source projects Quarkus LangChain4j (& Quarkus LangChain4j) Docling Java Spring Boot, Spring Framework, Spring Security Testcontainers Wiremock Microcks 🤘 Boston Java Users ACM Chapter Vice Chair 🤘 Published author
3. @edeandrea • How Quarkus enables modern Java development & the Kubernetes-native experience • Introduce familiar Spring concepts, constructs, & conventions and how they map to Quarkus • Emphasis on testing patterns & practices https://red.ht/quarkus-spring-devs
4. @edeandrea Open Source Open Foundation Open Governance
5. @edeandrea Build Time Runtime Packaging (maven, etc) gradle…) Load config file from file system Parse it Classpath scanning to find annotated classes Attempt to load class to enable/disable features Build its model of the world. Start the management (thread, pool…) @ @ </> How Does a Framework Start?
6. @edeandrea The Quarkus Way Runtime Build Time @ @ </> Package model
7. @edeandrea Unification of Imperative & Reactive Unification of Imperative and Reactive
8. @edeandrea 🤘Zero-config Live coding 🤘Auto-provision services 🤘Continuous testing 🤘Dev UI 🤘CLI Enhancing Developer Joy
9. @edeandrea IT’S STILL JAVA!
10. @edeandrea Is it a Jedi Mind Trick?
11. @edeandrea What’s the Secret Sauce? 🤘Don’t be dynamic Holly Cummins - https://youtu.be/vnrXXvnqriA
12. @edeandrea What’s the Secret Sauce? 🤘Don’t be dynamic 🤘Dead code elimination / inlining Holly Cummins - https://youtu.be/vnrXXvnqriA
13. @edeandrea What’s the Secret Sauce? 🤘Don’t be dynamic 🤘Dead code elimination / inlining 🤘Extensible build process so libraries can participate 🤘Jandex Indexing (offline reflection) Holly Cummins - https://youtu.be/vnrXXvnqriA
14. @edeandrea What’s the Secret Sauce? 🤘Don’t be dynamic 🤘Dead code elimination / inlining 🤘Extensible build process so libraries can participate 🤘Jandex Indexing (offline reflection) 🤘Don’t make humans tell the computer what it knows Holly Cummins - https://youtu.be/vnrXXvnqriA
15. @edeandrea What’s the Secret Sauce? 🤘Don’t be dynamic 🤘Dead code elimination / inlining 🤘Extensible build process so libraries can participate 🤘Jandex Indexing (offline reflection) 🤘Don’t make humans tell the computer what it knows 🤘Continuous profiling & shaving 🤘Be reactive without forcing humans to do reactive Holly Cummins - https://youtu.be/vnrXXvnqriA
16. @edeandrea Jam Time! https://github.com/quarkusio/spring-quarkus-perf-comparison
17. @edeandrea https://quarkus.io/blog/new-benchmarks https://github.com/quarkusio/benchmarks Don’t Take My Word For It!
18. @edeandrea Success Stories
19. @edeandrea Don’t Take Our Word For It! https://www.redhat.com/en/resources/etat-du-valais-customer-case-study
20. @edeandrea https://quarkus.io/blog/orange-telco-core-network-api-management-with-quarkus
21. @edeandrea https://www.youtube.com/live/YNxz3KaTz5Y
22. @edeandrea https://quarkus.io/blog/tag/user-story Don’t Take Our Word For It!
23. @edeandrea https://quarkus.io/blog/tag/user-story Don’t Take Our Word For It!
24. @edeandrea Additional Resources
25. @edeandrea https://www.redhat.com/en/resources/greener-java-applications-detail Setup 🤘 AWS (us-east-1) 🤘 SLA > 99% 🤘 800 req/sec over 20 days 🤘 50% load The Cost / Carbon Impact
26. @edeandrea https://github.com/quarkusio/quarkus-super-heroes https://quarkus.io/quarkus-workshops/super-heroes Quarkus Superheroes
27. @edeandrea Thank You!