System Design Practice
Design a URL Shortening Service
Medium
Completed
Web Applications
Scalability
Databases
Caching
45-60 min
92% popular
Design Twitter
Hard
Social Networks
Feeds
Notification System
Scalability
60-90 min
87% popular
Design a Rate Limiter
Medium
Completed
API Design
Throttling
Algorithms
Distributed Systems
45-60 min
78% popular
Design a Chat System
Medium
Real-time Systems
WebSockets
Presence
Message Delivery
60-75 min
85% popular
Design Netflix
Hard
Streaming Services
Video Streaming
CDN
Recommendations
75-90 min
90% popular
Design a Key-Value Store
Hard
Databases
Consistency
Availability
Partitioning
60-75 min
82% popular
Showing 6 of 24 problems