✦ Premium Sheet

Your System Design
Cockpit

Master HLD & LLD through immersive problem-solving. Built for engineers who design at scale.

100

Total Problems

Completed

In Progress

4.5 ✨

Avg. Rating

Topics

All Tags

Database Design

System Architecture

Load Balancing

Microservices

Caching Strategies

API Design

Security Patterns

Performance Optimization

#	Problem	Difficulty	Status	Est. Time
01	Design a URL Shortener	Easy	Completed	30 min
02	Design a Rate Limiter	Medium	Completed	45 min
03	Design a Chat System	Hard	In Progress	60 min
04	Design a Notification Service	Medium	Not Started	45 min
05	Design a Key-Value Store	Hard	Not Started	60 min
06	Design a Web Crawler	Medium	Completed	50 min
07	Design a News Feed	Hard	In Progress	60 min
08	Design a Search Autocomplete	Medium	Not Started	40 min
09	Design a CDN	Easy	Completed	30 min
10	Design a Distributed Cache	Hard	Not Started	60 min
11	Design an API Gateway	Medium	In Progress	45 min
12	Design a Load Balancer	Easy	Not Started	30 min
13	Design YouTube	Hard	Not Started	90 min
14	Design Google Drive	Hard	Not Started	75 min
15	Design a Pub/Sub System	Medium	Completed	45 min