System Design Challenges
Apply your knowledge to architect real-world systems. Manage capacity, cost, and performance under massive scale.
Medium
Design Facebook Feed
Architect a scalable news feed system handling millions of concurrent writes and reads.
Scale
1B+ DAU
Traffic
500k+
SLA
< 200ms
Hard
Design Uber
Build a real-time location tracking and ride matching engine with high consistency requirements.
Scale
100M+ MAU
Traffic
50k+
SLA
< 100ms
Expert
Design YouTube
Create a video streaming platform optimized for high bandwidth and global content delivery.
Scale
2B+ MAU
Traffic
1M+
SLA
Low Buffer
Expert
Design Stripe
Architect a highly reliable payment processing system with zero tolerance for data loss.
Scale
10M+ Merchants
Traffic
10k+
SLA
Strong Consistency