Hi all,

I was compiling system design questions for meta onsites. 2 onsite Coding rounds at meta are quite similar to phone screen and they are mostly from leetcode Facebook tagged. Behavioral is again some standard LP qustions. I couldn't find a compilation of system design questions in past 1 Year. Hence creating the list here. Would need your support, please contribute as you find some.

1. Ad click aggregation system
2. Top 10 songs played on spotify (top-k problem)
3. Design web crawler
4. Design a system to store images for FB and insta that would require 1000 uploads per sec and handle duplication.
5. Deisgn online chess
6. Design whatsapp
7. Design price alert system similar to camelcamelcamel.com
8. Design proximity server.
9. Design YouTube.
10. Design the Facebook post privacy functionality. In other words, if I make a Facebook post, and I have 3 privacy options to choose from (Only Me, Friends Only, Public), design how wold you get the visibility for any Faceook user (ie. can a FB user see the post or not)
11. Design an online judge like leetcode.

Update: Adding problems asked in last 1 year only i.e. 2023, as they are most likely to be asked again.