Inside ByteDance’s Monolith: The Engine Powering Smarter, Faster Content Feeds

Monolith is ByteDance’s real-time recommendation system that updates itself using live user behavior instead of waiting for batch retraining. It solves major issues like data sparsity and changing user interests with a collision-free embedding system and continuous online training. The result is faster, more accurate recommendations that adapt instantly—powering experiences like short-video feeds and ads.