We present WiscKey, a persistent LSM-tree-based
key-value store with a performance-oriented data layout
that separates keys from values to minimize I/O amplification. The design of WiscKey is highly SSD optimized,
leveraging both the sequential and random performance
characteristics of the device. We demonstrate the advantages of WiscKey with both microbenchmarks and
YCSB workloads. Microbenchmark results show that
WiscKey is 2.5×–111× faster than LevelDB for loading a database and 1.6×–14× faster for random lookups.
WiscKey is faster than both LevelDB and RocksDB in
all six YCSB workloads.
