Code Room
Code reviewHard
Question
An AI generated this 'thread-safe' memoization cache. Review it.
What a strong answer looks like
Separate real bugs from style. Rank issues by severity, point at the root cause rather than the symptom, and suggest a concrete fix — specific and kind.
Learn the concepts
_cache = {}_lock = threading.Lock() def get(key): if key in _cache: return _cache[key] with _lock: _cache[key] = compute(key) return _cache[key]Run or narrate your approach, then ask the coach.