Redis is an in-memory database that persists on disk. The data model is key-value, but many different kind of values are supported: Strings, Lists, Sets, Sorted Sets, Hashes, Streams, HyperLogLogs, Bitmaps.
Provides connection pooling and auto-reconnect for hiredis. It is also minimalistic and easy to do customization.
Support redis cluster. Maintained and used at vipshop.
Cloudera Redis Parcel and CSD to install and manage standalone Redis or Sentinel cluster using Cloudera Manager UI