Spring Boot on Quarkus: Magic or Madness? The magic will be some hand waving and performing the migration without changing a single line of code. The madness will be trying to figure out how it was done. by Join the DZone community and get the full member experience.Join For Free Quarkus is a Java stack tailored for OpenJDK HotSpot (or OpenJ9 on zSeries) and GraalVM, crafted from optimized Java libraries and standards. It is a good choice for building highly-scalable applications while using lower amounts of CPU and memory resources than other Java frameworks. These applications can be traditional web applications, serverless applications, or even functions as a service.