Polling vs WebSockets vs Socket.IO (Simple Explanation) - Chat App Part11

In this video we will go through the difference between HTTP short polling, long polling and WebSockets. We will then look at Socket.IO and see how is it related to short polling, long polling and WebSockets. Finally, we will briefly talk about Flask-SocketIO. This is part 11 of the 13 part video series on creating a chat application.

Resources:
Download source file: https://github.com/sandeepsudhakaran/...
Live link to final chat app: https://rchat-app.herokuapp.com/

Links referenced in this video:
Flask-SocketIO: https://flask-socketio.readthedocs.io...
WebSocket compatibility: https://caniuse.com/#search=Websocket

Videos in this series:
Part 0. Intro video:    • Create a Chat Application (Introducti...  
Part 1. Setup virtual environment, Heroku & PostgreSQL:    • Setup Virtual Environment, Create Her...  
Part 2. Create basic Flask app:    • Use Flask (render_template) to Create...  
Part 3 . Add a basic form to the page using WTForms:    • How to Use WTForms and Flask-WTF to C...  
Part 4. Cleaner code with WTForms Macros:    • How to Use Macros with Flask Template...  
Part 5. Use SQLAlchemy and Flask-SQLAlchemy to connect form to PostgreSQL database:    • Flask-SQLAlchemy & PostgreSQL to Crea...  
Part 6. Custom validator for WTForms/Flask-WTF:    • How to Use WTForm / Flask-WTF Custom ...  
Part 7: Create a login page:    • Create Login Page with Python Flask S...  
Part 8: Hashing with PBKDF2 / Passlib:    • Use Passlib (PBKDF2) in Python/Flask ...  
Part 9. Session management with Flask-Login:    • Manage Sessions with Flask-Login - Ch...  
Part 10. Use Flask's message flashing:    • Use Flask's Message Flashing with Cat...  
Part 11. Introduction to Polling, WebSocket & Socket.IO: This video
Part 12. Use Flask-SocketIO to create app:    • Create Chat Applicaton Using Flask-So...  
Part 13. Deploy Flask app in Heroku:    • Deploying Flask App to Heroku - Chat ...