[JavaZone 2023] - Quarkus for Spring Developers

In this session, I will show concepts and conventions familiar to Spring developers and how those same concepts and conventions can be implemented in Quarkus, all while highlighting similarities and differences between them. Additionally, I will show similarities and differences in how testing is done, highlighting Quarkus Dev Services.

This session will be mostly code while minimizing the number of slides. I will introduce an existing Spring application with a full test suite and build a Quarkus equivalent version of it, live.

Transcript

1. @edeandrea
2. @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
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 Free copy (while they last)! Come see me at the Red Hat booth! 2:00 PM today!
4. @edeandrea Java, The Enterprise Workhorse
5. @edeandrea Java, The Enterprise Workhorse
6. @edeandrea Monolith J2SE / J2EE Java / Jakarta EE Java, The Enterprise Workhorse
7. @edeandrea Monolith J2SE / J2EE Java / Jakarta EE Java, The Enterprise Workhorse
8. @edeandrea Monolith J2SE / J2EE Java / Jakarta EE Cloud-Native Microservices Spring Boot MicroProfile Java, The Enterprise Workhorse
9. @edeandrea Monolith J2SE / J2EE Java / Jakarta EE Cloud-Native Microservices Spring Boot MicroProfile Java, The Enterprise Workhorse
10. @edeandrea Monolith J2SE / J2EE Java / Jakarta EE Cloud-Native Microservices Spring Boot MicroProfile Java, The Enterprise Workhorse
11. @edeandrea Java / Jakarta EE J2SE / J2EE Monolith Cloud-Native Microservices Spring Boot MicroProfile Java, The Enterprise Workhorse
12. @edeandrea Java / Jakarta EE J2SE / J2EE Monolith Cloud-Native Microservices Serverless Event-Driven Microservices Cloud-Native Spring Boot MicroProfile Java, The Enterprise Workhorse
13. @edeandrea The Warmup Issue with Java Simon Ritter - Azul Systems - https://youtu.be/bWmuqh6wHgE (first 13 minutes)
14. @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?
15. @edeandrea The Quarkus Way Runtime Build Time @ 
 @ </> Package 
 model
16. @edeandrea JVM Build Time @ 
 @ </> Package 
 model Native The Quarkus Way enables Native Compilation
17. @edeandrea Unification of Imperative & Reactive Unification of Imperative and Reactive
18. @edeandrea 🤘Zero-config Live coding 🤘Auto-provision services 🤘Continuous testing 🤘Dev UI 🤘CLI Enhancing Developer Joy
19. @edeandrea IT’S STILL JAVA!
20. @edeandrea
21. @edeandrea Jam Time!
22. @edeandrea https://www.techempower.com/benchmarks/#section=data-r21&test=db&f=zijunz-zik0zj-zik0zj-zik0zj-zik0zj-zik0zj-zik0zj-v2qiv3-xamxa7-zik0zj-zik0zj-zik0zj-zik0zj-35r 
 https://www.redhat.com/en/blog/key-findings-idc-red-hat-quarkus-lab-validation 
 https://www.reddit.com/r/java/comments/o0ewar/do_quarkus_performance_benefits_scale Don’t Take My Word For It!
23. @edeandrea JVM Quarkus Spring Boot Ratio (Quarkus / SB) Framework version 3.2.4.Final 3.1.2 Build time (s) 7.85 4.12 190.69% Av. RSS after startup (MB) 174.29 264.37 65.93% Av. time to 1st req (ms) 2,498.33 5,354 46.66% Av. RSS after 1st req (MB) 233.38 313.83 74.36% Av. throughput (req/sec) 28,212.77 7,159.16 394.08% Av. RSS for max throughput (MB) 412.74 472.65 87.33% Max throughput density (req/sec/ MB) 69.87 15.39 454.13% Native Quarkus Spring Boot Ratio (Quarkus / SB) Framework version 3.2.4.Final 3.1.2 Build time (s) 128 210.25 60.88% Av. RSS after startup (MB) 65.7 148.66 44.19% Av. time to 1st req (ms) 51.33 222.33 23.09% Av. RSS after 1st req (MB) 72.89 151.43 48.14% Av. throughput (req/sec) 17,661.69 6,196.88 285.01% Av. RSS for max throughput (MB) 344.49 480.85 71.64% Max throughput density (req/sec/ MB) 54.84 13.8 397.54% Don’t Take My Word For It! Some real numbers (8 cores, 12GB RAM, GraalVM 22.3.1.r17)
24. @edeandrea JVM Quarkus Spring Boot Ratio (Quarkus / SB) Framework version 3.2.4.Final 3.1.2 Build time (s) 7.85 4.12 190.69% Av. RSS after startup (MB) 174.29 264.37 65.93% Av. time to 1st req (ms) 2,498.33 5,354 46.66% Av. RSS after 1st req (MB) 233.38 313.83 74.36% Av. throughput (req/sec) 28,212.77 7,159.16 394.08% Av. RSS for max throughput (MB) 412.74 472.65 87.33% Max throughput density (req/sec/ MB) 69.87 15.39 454.13% Native Quarkus Spring Boot Ratio (Quarkus / SB) Framework version 3.2.4.Final 3.1.2 Build time (s) 128 210.25 60.88% Av. RSS after startup (MB) 65.7 148.66 44.19% Av. time to 1st req (ms) 51.33 222.33 23.09% Av. RSS after 1st req (MB) 72.89 151.43 48.14% Av. throughput (req/sec) 17,661.69 6,196.88 285.01% Av. RSS for max throughput (MB) 344.49 480.85 71.64% Max throughput density (req/sec/ MB) 54.84 13.8 397.54% Don’t Take My Word For It! Some real numbers (8 cores, 12GB RAM, GraalVM 22.3.1.r17)
25. @edeandrea JVM Quarkus Spring Boot Ratio (Quarkus / SB) Framework version 3.2.4.Final 3.1.2 Build time (s) 7.85 4.12 190.69% Av. RSS after startup (MB) 174.29 264.37 65.93% Av. time to 1st req (ms) 2,498.33 5,354 46.66% Av. RSS after 1st req (MB) 233.38 313.83 74.36% Av. throughput (req/sec) 28,212.77 7,159.16 394.08% Av. RSS for max throughput (MB) 412.74 472.65 87.33% Max throughput density (req/sec/ MB) 69.87 15.39 454.13% Native Quarkus Spring Boot Ratio (Quarkus / SB) Framework version 3.2.4.Final 3.1.2 Build time (s) 128 210.25 60.88% Av. RSS after startup (MB) 65.7 148.66 44.19% Av. time to 1st req (ms) 51.33 222.33 23.09% Av. RSS after 1st req (MB) 72.89 151.43 48.14% Av. throughput (req/sec) 17,661.69 6,196.88 285.01% Av. RSS for max throughput (MB) 344.49 480.85 71.64% Max throughput density (req/sec/ MB) 54.84 13.8 397.54% Don’t Take My Word For It! Some real numbers (8 cores, 12GB RAM, GraalVM 22.3.1.r17)
26. @edeandrea JVM Quarkus Spring Boot Ratio (Quarkus / SB) Framework version 3.2.4.Final 3.1.2 Build time (s) 7.85 4.12 190.69% Av. RSS after startup (MB) 174.29 264.37 65.93% Av. time to 1st req (ms) 2,498.33 5,354 46.66% Av. RSS after 1st req (MB) 233.38 313.83 74.36% Av. throughput (req/sec) 28,212.77 7,159.16 394.08% Av. RSS for max throughput (MB) 412.74 472.65 87.33% Max throughput density (req/sec/ MB) 69.87 15.39 454.13% Native Quarkus Spring Boot Ratio (Quarkus / SB) Framework version 3.2.4.Final 3.1.2 Build time (s) 128 210.25 60.88% Av. RSS after startup (MB) 65.7 148.66 44.19% Av. time to 1st req (ms) 51.33 222.33 23.09% Av. RSS after 1st req (MB) 72.89 151.43 48.14% Av. throughput (req/sec) 17,661.69 6,196.88 285.01% Av. RSS for max throughput (MB) 344.49 480.85 71.64% Max throughput density (req/sec/ MB) 54.84 13.8 397.54% Don’t Take My Word For It! Some real numbers (8 cores, 12GB RAM, GraalVM 22.3.1.r17)
27. @edeandrea A Real Example
28. @edeandrea 🤘 Compiling a Spring Boot 3 application: ◦ 36,583 classes ◦ 80,008 fields ◦ 256,009 methods ◦ 1,783 classes, 2,186 fields, & 11,236 methods using reflection A Real Example
29. @edeandrea 🤘 Compiling a Spring Boot 3 application: ◦ 36,583 classes ◦ 80,008 fields ◦ 256,009 methods ◦ 1,783 classes, 2,186 fields, & 11,236 methods using reflection 🤘 Compiling a Quarkus 3 application: ◦ 22,420 classes ◦ 45,178 fields ◦ 180,478 methods ◦ 733 classes, 160 fields, & 3,968 methods using reflection A Real Example
30. @edeandrea 🤘 Compiling a Spring Boot 3 application: ◦ 36,583 classes ◦ 80,008 fields ◦ 256,009 methods ◦ 1,783 classes, 2,186 fields, & 11,236 methods using reflection 🤘 Compiling a Quarkus 3 application: ◦ 22,420 classes ◦ 45,178 fields ◦ 180,478 methods ◦ 733 classes, 160 fields, & 3,968 methods using reflection 🤘 The Quarkus application has: ◦ 14,163 (39%) less classes ◦ 34,830 (44%) less fields ◦ 75,531 (30%) less methods ◦ 1,050 (59%) less classes using reflection ◦ 2,026 (92%) less fields using reflection ◦ 7,268 (65%) less methods using reflection A Real Example
31. @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
32. @edeandrea
33. @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
34. @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 Free copy (while they last)! Come see me at the Red Hat booth! 2:00 PM today!
35. @edeandrea Thank You!