Real-time visualization of the X recommendation system
System Components
Home Mixer
Orchestration layer that assembles the For You feed
Thunder
In-memory store for real-time in-network posts
Phoenix Retrieval
Two-tower ML model for out-of-network discovery
Phoenix Ranking
Grok-based transformer for engagement prediction
Phoenix Predictions
P(favorite)P(reply)P(repost)P(quote)P(click)P(profile_click)P(video_view)P(share)P(dwell)P(follow_author)P(not_interested)P(block_author)
Based on the open-source X algorithm