Metrics - Time to evaluate Metrics by Coda Hale

https://github.com/dropwizard/metrics
http://metrics.codahale.com/getting-started/

INSTRUMENT IT
COLLECT IT
MONITOR IT (zabbix)
AGGREGATE IT (graphite)

Gauges
Counters
Meter
Histogram
Timer
HealthChecks

Reporting via JMX   -> JConsole or VisualVM
Reporting via HTTP
Reporting via Graphite


available on Maven