System Design: Social Media Feed

Design a scalable social media feed like Twitter/Instagram

Requirements

Functional

Post content
Follow users
Generate personalized feed
Like and comment

Non-Functional

Feed freshness
Low latency
Personalization
Fan-out optimization

System Components

Post Service

Create/delete posts

Feed Generation

Push vs pull approach

Notification Service

Real-time alerts

Graph Database

User relationship storage

Coming Soon

Detailed architecture diagrams, database schema, API design, and scalability considerations.