KDB is nothing like Hive or redis. In fact, there is no prominent open source project comparable to KDB in terms of architecture or use case. KDB is a fast col

KDB is nothing like Hive or redis. In fact, there is no prominent open source project comparable to KDB in terms of architecture or use case. KDB is a fast column oriented database with an APL-like API. Hive is a SQL translation layer for MapReduce/Tez and Redis is a key-value store with rich data structures.