Sad to see this downvoted. There is definitely a case where this applies, which is the case where going over your cache size is an exceptional circumstance tha

Sad to see this downvoted. There is definitely a case where this applies, which is the case where going over your cache size is an exceptional circumstance that you don't expect to reach very often. In that case, all the bookkeeping for determining what to evict is wasted effort.