TerarkDB is a fork of RocksDB with support for row-level compression.
Dictionary Encoding
Custom API
Embedded
Key/Value
http://www.terark.com/
https://github.com/Terark/terarkdb
https://github.com/Terark/terarkdb-manual
Terark Inc.
CN
2017
Commercial
C++
RocksDB
Proprietary