This is a wrapper to use the great java-library metrics with jruby.
To use, just add gem 'metrics-jruby' to your Gemfile and require 'metrics_jruby' in your initialization.
Now you can access Java::com.codahale.metrics.MetricRegistry or
Java::ComCodahaleMetrics::MetricRegistry.
More documentation and examples will follow (hopefully).
More information on metrics, see http://metrics.dropwizard.io/.
If you need other packages than the core, and have a idea how to add those, please contact me via mail, gitter or create a issue.