USDB: Scaling Storage for Next-Generation Recommender Systems at ByteDance
Comments
Ranked by a public rubric, not by votes: what a comment adds counts, not who wrote it. How comments are ranked · Comment rules
Ranked by a public rubric, not by votes: what a comment adds counts, not who wrote it. How comments are ranked · Comment rules
Summary
USDB is ByteDance's unified storage backend for user behavior sequences that serve both streaming recommendation inference and batch training. Its CascadeLSM time-tiered design, shared replicas, partial dumps, and hybrid columnar format reuse maintenance work across workloads.