: Designing a Proximity Service (like Yelp) and Nearby Friends .
Focus on specific bottlenecks, data consistency, or specialized algorithms (e.g., Geohashing for maps). system design interview alex xu volume 2 pdf github top
| Volume 2 Chapter | LeetCode Problem | Difficulty | | :--- | :--- | :--- | | Payment Gateway | Design a Payment System (Premium) | Hard | | Stock Exchange | Order Matching Engine | Extreme | : Designing a Proximity Service (like Yelp) and