In this video, we build an Instagram-like Story feature in React from scratch, exactly the way it is expected in frontend machine coding interviews.
We cover:
• Story upload and preview
• Auto-expiry of stories using timers
• Proper cleanup of timers and object URLs
• React state vs refs – when and why to use each
• Avoiding memory leaks (important interview topic)
• How Instagram actually handles story expiry (conceptually)
This is NOT just implementation: we focus on the “why” behind each decision, which interviewers look for in React machine coding rounds.
Perfect for:
Frontend Developer interviews
React Machine Coding rounds
Senior Frontend / SDE roles
Understanding React lifecycle & cleanup
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How to Build Instagram Stories in React | Machine Coding Interview Guide | NatokHD