👉 WebSocket (ws) engineering is a protocol and communication technology that enables real-time, bidirectional, full-duplex data transfer between web clients and servers over a single, persistent connection. Unlike traditional HTTP, which is stateless and request-response based, WebSockets allow servers to push data to clients instantly without the need for repeated requests. This is particularly useful in applications requiring immediate updates, such as live chat, online gaming, and financial tickers. WebSocket engineering involves setting up and managing the WebSocket server, handling connection management (including opening, closing, and reconnecting), ensuring secure communication through protocols like WSS (WebSocket Secure), and implementing efficient data serialization and transmission techniques to optimize performance and scalability.