TCP vs UDP: Why Most Developers Get This Wrong | Why Netflix, Zoom & Games Choose Differently
Have you ever wondered why online games use UDP while websites use TCP?
When data travels across the internet, it usually uses one of two transport protocols: TCP or UDP.
One prioritizes reliability.
The other prioritizes speed.
In this System Design Fundamentals lesson, you'll learn:
✅ What TCP is
✅ What UDP is
✅ How TCP guarantees delivery
✅ Why UDP is faster
✅ Packet loss and retransmission
✅ TCP 3-way handshake explained
✅ When to use TCP vs UDP
✅ Why HTTP uses TCP
✅ Why video calls often use UDP
✅ Why online games prefer UDP
Real-world examples:
Web Browsing (HTTP/HTTPS)
Netflix Streaming
Zoom Calls
Online Gaming
DNS Requests
Live Streaming
This lesson is essential for:
System Design Interviews
Software Engineering Interviews
Backend Development
Cloud Engineering
Computer Networking
Distributed Systems
By the end of this video, you'll understand the trade-off between speed and reliability and know exactly when TCP or UDP should be used.
📚 Topics Covered:
TCP
UDP
Networking Fundamentals
Packet Delivery
Reliability
Latency
Transport Layer
System Design Fundamentals
#TCP #UDP #Networking #SystemDesign #SystemDesignInterview #BackendEngineering #SoftwareArchitecture #DistributedSystems #CloudComputing #Programming