Implementing WebSocket in NestJS – A Comprehensive Guide

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Introduction to WebSocket

WebSocket is a communication protocol that provides full-duplex communication channels over a single TCP connection. Unlike traditional HTTP, which follows the request/response pattern, WebSocket enables real-time, bidirectional communication between the client and the server.

With WebSocket, the server can actively push data to clients without waiting for a request. This server-push mechanism makes it ideal for applications that require real-time updates, such as chat applications, collaborative editing tools, and real-time dashboards.

WebSocket operates on a low latency, making it efficient for high-frequency data exchanges and reducing the overhead of repeated HTTP requests. It also offers compatibility across various platforms and browsers.

Implementing WebSocket in