The early `return` on the not-found path returns while still holding the lock — `c.mu.Unlock()` is never reached on that branch, so the mutex stays locked…

Code RoomUnlock path missing

MediumPrep Room Coding #2396

Unlock path missing

Code reviewConcurrencyMid–Senior~18 min

Review this Go code.

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.

0:00 of about 18 min

Mark a line and say what kind of problem it is.0 findings

1func (c *Cache) Get(k string) (V, bool) {

2 c.mu.Lock()

3 v, ok := c.m[k]

4 if !ok {

5 return zero, false

6 }

7 c.mu.Unlock()

8 return v, true

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