ATTENTION!: This page describes new metrics(CASSANDRA-4009) planned in upcoming version 1.2, which is still under development.
Apache Cassandra version 1.1 introduced metrics using Codahale's Metrics library. The library enables easier exposure of metrics and integration with other systems. What you can get from metrics are basically the same with 1.1 but reimplemented and put them in order using Metrics library. You can still query using old JMX paths,