| Question | Solutions | Videos |
|---|---|---|
| Design True caller | Solution-1 | Video-1 |
| Design Snake and Ladder Game | Solution-1 Soluton-2 Solution-3 | Video-1 Video-2 |
| Design Bill Sharing/Expense Sharing like Splitwise | Solution-1 Solution-2 | Video-1 |
| Design Amazon Locker Service | Solution-1 Solution-2 | Video-1 |
| Design Vehicle / Car Rental Application like Zoomcar | Solution-1 | Video-1 |
| Design Distributed Id Generation like Twitter Snowflake id | Solution-1 | Video-1 |
| Design In-memory data streaming service | Solution-1 | |
| Implement a logger | Solution-1 | Video-1 |
| Cab Booking like Uber, Ola | Solution-1 | Video-1 |
| Design Parking lot system | Solution-1 Solution-2 | Video-1 Video-2 |
| Design Chess Game | Solution-1 Solution-2 | Video-1 Video-2 |
| Design Cache system | Solution-1 | Video-1 |
| In-Memory DB with indexing | Solution-1 | |
| Design an online book reader system | Solution-1 Solution-2 | - |
| Design an online hotel booking system | Solution-1 Solution-2 | Video-1 |
| Design a Logistics System | Solution-1 | - |
| Design Tic Tac Toe | Solution-1 Solution-2 | Video-1 Video-2 |
| Design a configuration management system | Solution-1 | - |
| Design a Vending Machine | Solution-1 | - |
| Design Maps Navigator Client for different transportation types (OOD) | Solution-1 | - |
| Design a Json Parser from scratch | Solution-1 Solution-2Solution-3 | - |
| Design Elevator | Solution-1 Solution-2 Solution-3 | |
| CricInfo/Cricbuzz | Solution-1 Solution-2 | Video-1 Video-2 |
| TikTok | - | Video-1 |
| - | Video-1 | |
| Movie Ticket Booking | Solution-1 | Video-1 |
| Uber Eats/ Door dash/ Swiggy | Solution-1 | Video-1 |
| e-Commerce Review System | Solution-1 | Video-1 |