Cassandra 2.2

Cassandra 2.2 has been released and is now generally available with several notable features such as: 1. Enhanced performance for read operations through improved cache utilization. 2. Improved query optimization, leading to faster response times for complex queries. 3. Increased data storage capacity by supporting larger partitions. 4. Better support for time-series data with the addition of timestamp type and functions. 5. Enhanced security features, including Kerberos authentication and improved SSL support.