Have you ever worked with the reactive stack (Spring WebFlux)?

Yes, I have worked with the Spring WebFlux reactive stack. It is an asynchronous, non-blocking framework for building reactive web applications based on reactive streams (Reactive Streams).

Main features:

• Uses Project Reactor for reactive programming.
• Allows handling a large number of requests with less resource consumption.
• Supports reactive types Mono (0..1 element) and Flux (0..N elements).

Example of a WebFlux controller:

@RestController
public class ReactiveController {
    @GetMapping("/hello")
    public Mono<String> sayHello() {
        return Mono.just("Hello, WebFlux!");
    }
}

Working with WebFlux requires understanding reactive streams, backpressure, and asynchronous data processing.