Problem
Implement an in-memory key-value store with support for time-based expiration (TTL) and concurrent read/write operations.
Practicing as: Software Engineer interview at Observe.AIHi, I'll play your Observe.AI interviewer for the Software Engineer role. Candidates describe these interviews as often stressful and moderately difficult, so expect me to be direct and to the point. Take your time with the question above and answer like we're in the room.
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