What are the advantages and disadvantages of using Quarkus in application development?

Quarkus is a modern Java framework focused on creating cloud-native and containerized applications with high performance and low startup time.

Advantages of Quarkus:

• Fast startup and low memory consumption — suitable for microservices and serverless.
• Native compilation support via GraalVM — allows creating native executables.
• Integration with popular Java EE / Jakarta EE libraries and specifications — simplifies migration and development.
• Live reload — accelerates the development cycle.

Disadvantages of Quarkus:

• Young project — may lack the maturity and ecosystem of Spring.
• Limitations when using some Java features — for example, not all libraries work without modifications during native compilation.
• Steep learning curve for some developers — especially if accustomed to traditional Java EE or Spring.

Example of a simple REST service in Quarkus:

import javax.ws.rs.GET;
import javax.ws.rs.Path;

@Path("/hello")
public class GreetingResource {
    @GET
    public String hello() {
        return "Hello from Quarkus!";
    }
}

Quarkus is excellent for modern cloud applications where startup speed and resource efficiency are important.