Twitter's Timeline Architecture

GENERALArchitecture
Twitter's Timeline Architecture — GENERAL architecture diagram

About This Architecture

How Twitter assembles and delivers the home timeline. Shows the fanout-on-write approach where tweets are pre-computed into Redis caches per user, ML-powered ranking for the algorithmic timeline, Social Graph on FlockDB, media service with CDN delivery, and ads injection.

Architecture prompt

How Twitter assembles and delivers the home timeline. Shows the fanout-on-write approach where tweets are pre-computed into Redis caches per user, ML-powered ranking for the algorithmic timeline, Social Graph on FlockDB, media service with CDN delivery, and ads injection.

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About This Architecture

How Twitter assembles and delivers the home timeline. Shows the fanout-on-write approach where tweets are pre-computed into Redis caches per user, ML-powered ranking for the algorithmic timeline, Social Graph on FlockDB, media service with CDN delivery, and ads injection.

Twitter's Timeline Architecture

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Created by

February 9, 2026

Updated

April 5, 2026 at 7:03 AM

Type

architecture

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