What is the main scaling concern when using fan-out on write for a celebrity with millions of followers?
Practice this question from Quiz: Design a News Feed, with options and an explanation.
Question
What is the main scaling concern when using fan-out on write for a celebrity with millions of followers?
Option A — Correct answer
The write amplification becomes very expensive
Option B
The URL format becomes invalid
Option C
TCP stops working
Option D
The cache can never be used