Bo Chen

ZNStore: Decomposing the B+Tree Write Path for Zoned Namespace SSDs

Zoned Namespace (ZNS) SSDs expose a sequential-write zone interface that reduces flash-level write amplification and offers cost and capacity advantages over conventional SSDs. Yet this interface creates a semantic mismatch for B+Tree-based storage engines, whose updates are fine-grained and logically in-place. Our wri...