Topic
Social Feed
Learn Social Feed as a connected topic across chapters, concepts, simulations, and interview reasoning.
10 Concepts2 Articles38 min
Overview
Learn Social Feed as a connected topic across chapters, concepts, simulations, and interview reasoning.
How this topic helps
Scalability
System Design
#news Feed
Architecture
Learning Path in this Topic
Series that contain articles from Social Feed. Select a path to filter the article list.
Articles
2 matched articles
Article 1Write-Time vs Read-Time Fan-Out: How Social Feeds ScaleTLDR: Fan-out is the act of distributing one post to many followers' feeds. Write-time fan-out (push) pre-computes feeds at post time — fast reads but catastrophic write amplification for celebrities.18 min
Article 2System Design HLD Example: News Feed (Home Timeline)TLDR: A news feed system builds personalized timelines by combining content publishing, graph relationships, and ranking. The scalability crux is the fan-out amplified write path: a single celebrity p20 min