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Uber HLD

The 18 highest-frequency prompts from all time. Finish the strongest signals first.

One question at a time.

Top questions 18

Done	Question	Resource
Mark Design a distributed unique ID generator completed	Design a distributed unique ID generator	Open
Mark Design a key-value store for a search engine completed	Design a key-value store for a search engine	Open
Mark Design Amazon's sales ranking by category feature completed	Design Amazon's sales ranking by category feature	Open
Mark Design an ETA service completed	Design an ETA service	Open
Mark Design a notification system completed	Design a notification system	Open
Mark Design a payment system completed	Design a payment system	Open
Mark Design a Rate Limiter completed	Design a Rate Limiter	Open
Mark Design a system that scales to millions of users on AWS completed	Design a system that scales to millions of users on AWS	Open
Mark Design a web crawler completed	Design a web crawler	Open
Mark Design "find nearby drivers/restaurants" completed	Design "find nearby drivers/restaurants"	Open
Mark Design Mint.com completed	Design Mint.com	Open
Mark Design Pastebin.com (or Bit.ly) completed	Design Pastebin.com (or Bit.ly)	Open
Mark Design real-time location tracking completed	Design real-time location tracking	Open
Mark Design surge pricing completed	Design surge pricing	Open
Mark Design the data structures for a social network completed	Design the data structures for a social network	Open
Mark Design the Twitter timeline and search (or Facebook feed and search) completed	Design the Twitter timeline and search (or Facebook feed and search)	Open
Mark Design Uber Eats / food delivery completed	Design Uber Eats / food delivery	Open
Mark Design Uber / Lyft (ride hailing) completed	Design Uber / Lyft (ride hailing)	Open