Since the first edition of this mostly covered Cassandra versions 2.1 and below, here is a list of features and improvements that have been made to Cassandra starting version 2.2 and beyond. This will give you a gist of how Cassandra has matured over the last year:
- JSON in CQL3: Cassandra 2.2 has support for inserting and selecting JSON data
- User-defined functions: These can be defined to apply a function to data stored in Cassandra
- User-defined aggregates: Using user-defined functions, custom aggregation functions can be stored in Cassandra
- Role-based access control: In addition to per-user access control, now roles can be defined for role-based access control
- Support for Windows 7, Windows 8, ...
