SilverTorch: A Unified Retrieval Architecture for Scalable Recommendation Systems

Summary

The article introduces SilverTorch, a new retrieval paradigm for recommendation systems that unifies all retrieval components under a single architecture, moving away from traditional microservice-based designs. SilverTorch reimagines how recommendation systems handle retrieval — narrowing millions of content items down to thousands in under 100 milliseconds — by treating the index as a model. The system shows up to 23.7x improvement in performance, overcoming the limitations of microservice architectures that constrained model complexity and candidate evaluation quality.