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[System Design Case Study #77] Massive 3 Billion Daily Users : How Youtube Actually Scales

With Code example and flowchart...

Naina Chaturvedi's avatar
Naina Chaturvedi
Oct 12, 2025
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Hi all,

Vitess is an open-source project that addresses the scalability challenges of MySQL databases. YouTube, with its massive user base of 3 billion users, relies on a highly scalable and robust backend infrastructure to support its operations. Central to this infrastructure is MySQL, a relational database management system, which has been optimized and scaled using various technologies and techniques to handle the immense load.

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