Java Spring WebFlux

Spring WebFlux is a part of the Spring framework that provides responsive scheduling support for building asynchronous blocking event-driven applications. Mostly this Spring WebFlux is used to develop Web Applications that require high concurrency and scalability. and built on top of the WebFlux Project Reactor. This can provide responsive policy support.

Example:

Here, we have created one API endpoint by using @GetMapping that is testing. After running this program open the browser then open this URL through that browser. First, we print the Mono.just method statement then mapped with s lambda expression.

Java

import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import reactor.core.publisher.Mono;

@RestController
public class ExampleController {
    
    // Endpoint for testing
    @GetMapping(value = "/testing", produces = MediaType.TEXT_PLAIN_VALUE)
    public Mono<String> hello() {
        return Mono.just("Welcome To w3wiki")
                   .map(s -> s + " - processed");
    }
}

Output: