Ever wondered why websites crash during big sales like Flipkart Big Billion Days or Amazon Prime Day?
These companies have thousands of engineers and massive cloud infrastructure. So why do pages stop loading, payments fail, and checkout suddenly breaks?
In this video, we break down what really happens behind the scenes using simple real-world examples.
You’ll learn:
• Why traffic spikes overload websites
• How servers and databases become bottlenecks
• Why adding more servers isn’t enough
• What race conditions are (without the jargon)
• How queues help prevent overselling
• How companies design systems to recover from failures
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## ⏱ Chapters
00:00 Why Websites Crash During Sales
00:25 The Billion-Dollar Mystery
00:40 The Supermarket Analogy
01:03 What Happens to the Servers?
01:21 The Database Bottleneck
01:43 Why More Servers Don’t Fix Everything
02:05 The Race Condition Problem
02:27 How Big Companies Solve It
02:51 Scaling the Entire System
03:10 The Real Lesson
03:32 Outro