CodeSnips

sql

-- Publisher: Send notification
NOTIFY new_order, 'Order #12345 created';

-- Subscriber: Listen for notifications
LISTEN new_order;

PostgreSQL LISTEN/NOTIFY for pub-sub messaging

postgresql listen-notify pub-sub

by Maria Garcia 2 tabs

java

package com.example.demo.config;

import org.springframework.context.annotation.Configuration;
import org.springframework.messaging.simp.config.MessageBrokerRegistry;
import org.springframework.web.socket.config.annotation.EnableWebSocketMessageBroker;
import org.springframework.web.socket.config.annotation.StompEndpointRegistry;

WebSocket for real-time communication

java websocket spring-boot

by David Kumar 3 tabs

javascript

// 1. Basic WebSocket connection
const socket = new WebSocket('wss://example.com/ws');

// Connection opened
socket.addEventListener('open', (event) => {
  console.log('Connected to WebSocket server');

WebSockets for real-time bidirectional communication

websockets real-time javascript

by Alex Chang 1 tab