This article is an eight-year retrospective on development priorities for RocksDB, a key-value
store developed at Facebook that targets large-scale distributed systems and that is …

RocksDB is a key-value store targeting large-scale distributed systems and optimized for
Solid State Drives (SSDs). This paper describes how our priorities in develo** RocksDB …

Research on flash devices almost exclusively focuses on conventional SSDs, which expose
a block interface. Industry, however, has standardized and is adopting Zoned Namespaces …

The recent emergence of NVMe flash devices with Zoned Namespace support, ZNS SSDs,
represents a significant new advancement in flash storage. ZNS SSDs introduce a new …

We propose WALTZ, an LSM tree-based key-value store on the emerging Zoned
Namespace (ZNS) SSD. The key contribution of WALTZ is to leverage the zone append …

We introduce ZNSwap, a novel swap subsystem optimized for the recent Zoned Namespace
(ZNS) SSDs. ZNSwap leverages ZNS's explicit control over data management on the drive …

Zoned Namespace (ZNS) is a novel storage interface that offers logical zones aligned to a
physical media (eg, NAND flash) to the host system. Due to the out-of-place updating …

New storage interfaces continue to emerge fast on Non-Volatile Memory Express (NVMe)
storage. Fitting these innovations in the general-purpose I/O stack of operating systems has …

In LSM-tree-based key-value stores (LSM-KV stores), the high write amplification (WA) in
both LSM-KV store level and device level (device internal GC) caused by compaction …

The standardization of NVMe Zoned Namespaces (ZNS) in the NVMe 2.0 specification
presents a unique new addition to storage devices. Unlike traditional SSDs, where the flash …