Interesting tough engineering problems you ask in interviews?

Interesting thread from previous post on If candidate be asked un realistic problems in the interview

How do handle 100k RPS/s scale?

I believe such questions just to test if candidate can think and apply certain software engineering design principles at hand. Understand approach how do they handle corner cases ( if they can identify) technical depth, also good way to test fundamentals.

For eg https://www.morling.dev/blog/one-billion-row-challenge/

https://github.com/gunnarmorling/1brc

Such problems really pushes candidates to thier limits. I love to go deep in OS & database, distributed systems.

Would love to see, discuss what interesting tough engineering problems you folks ask in interviews?

#tech #softwareengineering