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The 18 highest-frequency prompts from all time. Finish the strongest signals first.
Top questions 18
| Done | Question | Resource |
|---|---|---|
| Design a distributed cache (memcache at scale) | Open | |
| Design a key-value store for a search engine | Open | |
| Design a live commenting / reactions system | Open | |
| Design Amazon's sales ranking by category feature | Open | |
| Design a notification system | Open | |
| Design a Rate Limiter | Open | |
| Design a system that scales to millions of users on AWS | Open | |
| Design a typeahead search | Open | |
| Design a web crawler | Open | |
| Design Facebook Live / video streaming | Open | |
| Design Facebook Messenger / WhatsApp | Open | |
| Design Instagram | Open | |
| Design Mint.com | Open | |
| Design Pastebin.com (or Bit.ly) | Open | |
| Design the data structures for a social network | Open | |
| Design the Facebook/Instagram News Feed | Open | |
| Design the "People You May Know" / friend graph | Open | |
| Design the Twitter timeline and search (or Facebook feed and search) | Open |