Hard Design: Social Media Platform (Instagram)

How does Instagram handle the 'celebrity problem' where Selena Gomez (400M followers) posts a photo?

— Tests your understanding of this concept.

Answer Options

A Fan-out on write to all 400M followers

B Store post once; celebrities' posts fetched on read; normal users get fan-out on write

C Block celebrities from posting

D Delay celebrity posts until off-peak hours

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This question is from the Design: Social Media Platform (Instagram) topic (System Design Cases).

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