YouTube System Design - Interactive Model

YouTube

🔍 Search

👤

6:18

⚙⛶

16:32

How YouTube Serves 1 Billion Videos Per Day

TechVault · 2.1M views · 3 days ago

TechVault

842K subscribers

YouTube at Scale

2B+

Monthly Users

500h

Uploaded/min

1B+

Daily Views

Built on Google Cloud — GCS, Spanner, BigQuery, Pub/Sub. Every upload triggers a transcoding pipeline producing 10+ resolution variants.

End-to-End Flows

Pick a scenario to highlight components & path

Speed

Client Layer

Devices

Services Layer

Core backend

Data Layer

Storage & analytics

📹

Select a flow to see the exact path

Pick a scenario above — e.g. "Watch a Video" — to trace how a request travels from the YouTube App through the API Gateway → Video Serving → Metadata DB → CDN, where the nearest edge node delivers video chunks to your device. Each component lights up in sequence with animated data packets.