NVMKV: A Scalable, Lightweight, FTL-aware Key-Value Store

Key-value stores are ubiquitous in high performance data-intensive, scale out, and NoSQL environments. Many KV stores use flash devices for meeting their performance needs. However, by using flash as a simple block device, these KV stores are unable to fully leverage the powerful capabilities that exist within Flash Translation Layers (FTLs). NVMKV is a lightweight KV store that leverages native FTL capabilities such as sparse addressing, dynamic mapping, transactional persistence, and support for high-levels of lock free parallelism. Our evaluation of NVMKV demonstrates that it provides scalable, high-performance, and ACID compliant KV operations at close to raw device speeds.