Web sockets

Lesson in the Backend Developer Roadmap · Stage 20: Real-Time Data

Last updated 14 September 2026

What is Web sockets?

WebSockets enable full-duplex, real-time communication over a single persistent connection between client and server. Unlike HTTP's request-response cycles, allows continuous bidirectional data exchange. Ideal for live chat, gaming, and real-time updates with low-latency communication.

Study this in the interactive course See the whole Backend roadmap

Free resources to learn Web sockets

Official docsSocket.io Library Bidirectional and Low-latency Communication for Every Platform
ArticleIntroduction to WebSockets
VideoA Beginners Guide to WebSockets
VideoHow Web Sockets Work

Web sockets: common questions

Can I learn Web sockets in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Web sockets in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this Web sockets tutorial for beginners?

It is lesson 122 of 155 in the free Backend roadmap, in stage 20, Real-Time Data. If you are new to Backend, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.