Added push messages using an interval Flux.

spring-websockets/pom.xml

@@ -18,6 +18,10 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-websocket</artifactId>
         </dependency>
+        <dependency>
+            <groupId>io.projectreactor</groupId>
+            <artifactId>reactor-core</artifactId>
+        </dependency>
         <dependency>
             <groupId>com.github.javafaker</groupId>
             <artifactId>javafaker</artifactId>

spring-websockets/src/main/java/com/baeldung/websockets/ReactiveScheduledPushMessages.java

@@ -0,0 +1,32 @@
+package com.baeldung.websockets;
+
+import com.github.javafaker.Faker;
+import org.springframework.beans.factory.InitializingBean;
+import org.springframework.messaging.simp.SimpMessagingTemplate;
+import org.springframework.stereotype.Service;
+import reactor.core.publisher.Flux;
+
+import java.text.SimpleDateFormat;
+import java.time.Duration;
+import java.util.Date;
+
+@Service
+public class ReactiveScheduledPushMessages implements InitializingBean {
+
+    private final SimpMessagingTemplate simpMessagingTemplate;
+
+    private final Faker faker;
+
+    public ReactiveScheduledPushMessages(SimpMessagingTemplate simpMessagingTemplate) {
+        this.simpMessagingTemplate = simpMessagingTemplate;
+        this.faker = new Faker();
+    }
+
+    @Override
+    public void afterPropertiesSet() throws Exception {
+        Flux.interval(Duration.ofSeconds(4L))
+            .map((n) -> new OutputMessage(faker.backToTheFuture().character(), faker.backToTheFuture().quote(), 
+                                            new SimpleDateFormat("HH:mm").format(new Date())))
+            .subscribe(message -> simpMessagingTemplate.convertAndSend("/topic/messages", message));
+    }
+}