Design a Social Media Feed System
Design a Social Media Feed System
MediumSystem Design0% accepted
LinkedIn shows a personalized feed of posts from connections. Design the feed system handling 100M users, supporting fan-out-on-write vs fan-out-on-read trade-offs.
Approach
Design news feed with fan-out strategy and caching.
Input
Influencer with 5M followers posts
Output
Fan-out on read for influencer; async fan-out on write for regular users
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