Java / Quarkus Interview questions
What is Quarkus?
Quarkus is an open-source Java framework built specifically for running well in containers and on Kubernetes, with a design goal of very fast startup time and low memory usage compared to traditional Java EE or Spring-style stacks.
It was created by Red Hat and combines familiar Java standards — CDI, JAX-RS, JPA — with a build-time processing model that does most of the heavy lifting (dependency injection wiring, reflection setup, configuration) before the application ever starts, rather than at runtime.
It also compiles cleanly to a native executable via GraalVM, which is what gives it startup times measured in milliseconds instead of seconds, making it a popular choice for serverless functions and microservices where fast cold starts and small footprint matter.
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