WebFlux WebSocket Handlers
Implement reactive WebSocket handlers using Spring WebFlux for non-blocking I/O.
Reactive WebSockets with WebFlux
Welcome! In this lesson, we'll dive into implementing reactive WebSocket handlers using Spring WebFlux. This approach is key for building high-performance, non-blocking real-time applications.
Spring WebFlux leverages the power of Project Reactor (Flux and Mono) to handle WebSocket connections and messages asynchronously, making your applications highly scalable and efficient.
The WebSocketHandler Interface
At the core of WebFlux WebSockets is the WebSocketHandler interface. It's a functional interface, meaning it has a single abstract method that you'll implement.
This method, handle(WebSocketSession session), is invoked every time a new WebSocket connection is established. It returns a Mono<Void>, signaling when the handling of the session is complete.
import org.springframework.web.reactive.socket.WebSocketHandler;
import org.springframework.web.reactive.socket.WebSocketSession;
import reactor.core.publisher.Mono;
// Simplified interface definition
public interface WebSocketHandler {
Mono<Void> handle(WebSocketSession session);
}