Java Threading · interview question
Where should a slow payment API call usually happen when protecting inventory with a lock?
Multiple choiceMediumchapter-15-curatedpremiumjava-threadingsynchronized-locks
Answer and explanation
Correct answer
C. Outside the critical section, after the shared inventory mutation is protected
Why
Locks should guard the narrow in-memory critical section only. Holding them during slow network calls serializes unrelated work and destroys throughput.
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