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Quarkus - a shrink ray to your Java Application
Quarkus is an open source framework for building Java applications that are containerized, microservices-based, and cloud native. It uses GraalVM to compile Java code ahead-of-time to native executables, reducing startup time and memory usage compared to traditional Java applications. Quarkus provides extensions for common services like REST, database access, security, and more to help developers quickly build cloud native applications that are fast, lightweight and Kubernetes-native.
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Quarkus - a shrink ray to your Java Application
- 1. kameshsampath@kamesh_sampath a shrink rayto your Java Application Kamesh Sampath, Director of Developer Experience Red Hat kamesh.sampath@hotmail.com bit.ly/quarkus-java-shrinkray bit.ly/quarkus-tutorial
- 2. kameshsampath@kamesh_sampath WHAT IS QUARKUS? QUARK:elementary particle / US: hardest thing in computer science
- 3. kameshsampath@kamesh_sampath An Open Source stackto write Java apps Cloud Native, Microservices, Serverless
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- 5. kameshsampath@kamesh_sampath 5 Agility, Scalability,Faster Business Reactivity Container platform App 1 Data App 2 Data App 3 Data App 4 App 5 Data
- 6. kameshsampath@kamesh_sampath • Startup overhead •Scan classpath • Load jars from disk • Annotations parsing • Build metadata • JIT the code • Memory overhead • # of classes, metadata, compilation • Metaspace often not Garbage collected 6 Java and Containers - Untold truths RSS Heap Metaspace off-heap
- 7. kameshsampath@kamesh_sampath Container platform Node NodeJS NodeJS NodeJS NodeJS NodeJS NodeJS NodeJS Node Go Go GoGo Go Go Go Go Go Go Go Go Go Go Node HotSpot Heap HotSpot Heap HotSpot Heap HotSpot Heap Java and Containers - Untold truths
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- 14. 14 Quarkus Extensions RESTEasy Netty HibernateORM HibernateValidator MPOpenAPI MPJWT EclipseVert.X Agroal(connpool) NarayanaJTA MPReactive Messaging ApacheCamel ... Quarkus Core Arc(DI) Jandex Gizmo Graal SDK HotSpot (Any JDK) SubstrateVM
- 15. 15 Build Process Compile Provision (curate) Wiring & Assemble (augment)AOT Native Compilation Hotspot Runnable & Image Native Executable & Image app.jar frameworks Runnable java app native-app
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- 18. kameshsampath@kamesh_sampath A cohesive platformfor optimized developer joy: • Based on standards, but not limited • Unified configuration • Zero config, live coding in the blink of an eye • Streamlined code for the 80% common usages, flexible for the 20% • No hassle native executable generation Developer Joy
- 19. kameshsampath@kamesh_sampath Supersonic Subatomic Java Memory(RSS) in Megabytes Quarkus + GraalVM 13 MB Quarkus + OpenJDK 74 MB Traditional Cloud-Native Stack 140 MB REST
- 20. kameshsampath@kamesh_sampath Supersonic Subatomic Java Memory(RSS) in Megabytes REST + CRUD Quarkus + GraalVM 35 MB Quarkus + OpenJDK 130 MB Traditional Cloud-Native Stack 218 MB
- 21. kameshsampath@kamesh_sampath Supersonic Subatomic Java Boot+ First Response Time (in seconds) Quarkus + GraalVM 0.014 Seconds REST REST + CRUD Quarkus + OpenJDK 0.75 Seconds Quarkus + GraalVM 0.055 Seconds Quarkus + OpenJDK 2.5 Seconds Traditional Cloud-Native Stack 9.5 Seconds Traditional Cloud-Native Stack 4.3 Seconds Time to first response
- 22. kameshsampath@kamesh_sampath Unifies Imperative andReactive • 1 Engine rules them all - Vert.x • Can use imperative and reactive depending on the use case • From CRUD to event-driven with a single stack @Inject SayService say; @GET @Produces(MediaType.TEXT_PLAIN) public String hello() { return say.hello(); } @Inject @Channel(”kafka”) Publisher<String> reactiveSay; @GET @Produces(MediaType.SERVER_SENT_EVENTS) public Publisher<String> stream() { return reactiveSay; }
- 23. kameshsampath@kamesh_sampath Best of BreedFrameworks & Standards Eclipse Vert.x Hibernate RESTEasy Apache Camel Eclipse MicroProfile Netty Kubernetes OpenShift Jaeger Prometheus Apache Kafka Infinispan
- 24. kameshsampath@kamesh_sampath if containerFirst &&cloudNative { System.out.println(“Kubernetes Native”); }
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- 26. kameshsampath@kamesh_sampath Resources Tutorials Quarkus Tutorial -bit.ly/quarkus-tutorial Knative Tutorial – bit.ly/knative-tutorial Istio Tutorial - bit.ly/istio-tutorial Webinar https://developers.redhat.com/devnation/ About microservices •Demo: bit.ly/msa-instructions •Slides: bit.ly/microservicesdeepdive Video Training: •9 Steps to Awesome with Kubernetes
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- 29. kameshsampath@kamesh_sampath JVM CI Sulong (LLVM) Truffle GraalCompiler Substrate VM Java HotSpot VM
- 30. kameshsampath@kamesh_sampath Closed-world assumption Dead codeelimination Substrate VM Classes JDK Classes JDK Classes Substrate VM Classes Java Application Classes Java Application Classes Native Executable