IMO this is where a comprehensive System Design interview weeds out the hopeless. Minimum 2 hours, don't just use a "design facebook/twitter/insta" scenario because anyone can memorise those, dig into the weeds as and when it feels appropriate, and keep the candidate talking through trade offs, thought process etc so you can really peak inside their head. The catch is that you also need to be very competent and know the design and all permutations of it inside and out.
Leetcode et al. are just testing rote memory, there's no need to have candidates actually type out solutions its a waste of time. So long as they can articulate what solution they would use, why, and what other solutions they considered that's all you really need to be concerned with.
Leetcode et al. are just testing rote memory, there's no need to have candidates actually type out solutions its a waste of time. So long as they can articulate what solution they would use, why, and what other solutions they considered that's all you really need to be concerned with.