Hard Design: News Feed (Facebook/Twitter)

What is the 'thundering herd' problem in a news feed system?

— Tests your understanding of this concept.

Answer Options

A Too many writes hitting the database

B When a celebrity posts and millions of users refresh their feed simultaneously

C Cache eviction causing all requests to hit DB at once

D Load balancer overwhelmed during traffic spikes

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This question is from the Design: News Feed (Facebook/Twitter) topic (System Design Cases).

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