WebSockets vs Polling

Why Websocket over HTTP polling?

Real-time applications demand fast, efficient communication. While HTTP Polling was an early approach, WebSockets have become the preferred solution for handling real-time data.

The Problem with HTTP Polling

HTTP Polling works by making frequent requests to the server to check for new data. This approach has several downsides:

• High Latency: Every request introduces a delay.

• Increased Server Load: Servers must handle frequent requests, even when no updates are available.

• Inefficient Bandwidth Usage: Constant requests lead to unnecessary network traffic.

The WebSocket Advantage

WebSockets offer a persistent, bi-directional connection between the client and the server, enabling real-time data exchange without repeated requests. Key benefits include:

• Instant Data Transfer: No need to wait for request intervals.

• Reduced Bandwidth Consumption: Only relevant data is transmitted.

• Lower Server Overhead: A single connection replaces multiple HTTP requests.

When to Use WebSockets

• Chat applications (e.g., WhatsApp, Slack)

• Live notifications (e.g., stock market updates, sports scores)

• Collaborative tools (e.g., Google Docs, multiplayer gaming)