← Case Studies
Twitter/X News Feed
How Twitter delivers 500M+ tweets/day to hundreds of millions of users using hybrid fan-out strategies.
1 Lessons
Knowledge Course
Curated Resources
References & Resources
Design Twitter/X Feed: The Hardest Feed System at Scale
Comprehensive breakdown of Twitter's hybrid fan-out architecture.
Will Twitter Collapse? Examining the Resiliency of Twitter's Architecture
Analysis of Twitter's architectural resilience and potential failure points.
Introducing FlockDB
Twitter's distributed graph database for social relationships.
Processing Billions of Events in Real Time at Twitter
Real-time event processing with Kafka and Flink.
The Distributed Database Behind Twitter
Technical analysis of Manhattan, Twitter's custom key-value store.