Design a Social Media Feed · System Design Interview

Design a Social Media FeedDesign the system that builds and serves the home feed for a social network, showing posts from the accounts a user follows.What it has to do

A user sees a feed of recent posts from accounts they follow

Publishing a post eventually makes it appear in followers’ feeds

The feed is paginated and ordered by recency

Scale

Daily active users: 200 million

Posts per day: 50 million

Feed reads per day: 10 billion

Out of scope

Ranking and personalisation

Ads

Direct messages

Content moderation

Practise this challengeAll system design challenges

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