I use Spaced Repition for chess openings as I can't refer to a book while playing a tournament game. That's not the case for programming.
In a high pressure situation like an interview, I personally find it difficult to think naturally through a problem. Familiarizing myself with different types of interview questions regularly helps a lot.
10 years ago I was pretty handy with CLRS, but now I'd be hard pressed to implement quicksort without looking it up.