Available question text
Design a system that tracks user activity and allows users to hover over usernames to see when another user was last active (e.g., commenting, reading posts, or other interactions).
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Launchdarkly
Design a Last Active Feature for a Social Platform
Reported Sep 1, 2026 · 4 source reports
MANAGER, MID_LEVEL, SENIOR
Source snapshot: Nov 12, 2026
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