Description of problem:

Allow admins to examine performance remotely (without requiring access to JBoss Management Console).


Some questions we would like to answer (historical and instantaneous):

 - How many users have editors open?  (Is now a good time to reboot?)
 - How many users are actively translating?
 - Number of active uploads/downloads
 - How often is copytrans invoked?
 - Performance stats for operations like:
  - document uploads
  - copytrans
  - stats calculations


Possible options for gathering metrics:

 - Java Simon (exposes JMX)
 - JAMon (may be obsolete)
 - adding more logging statements to our code
 - Dropwizard Metrics (Coda Hale, Yammer) (exposes JMX/JSON)
 - Netflix Servo (exposes JMX)


Possible options for publishing metrics:

 - hawt.io to expose JMX via web console
 - LogStash/Kibana to collect and analyse logging
 - Jolokia is "remote JMX with JSON over HTTP" (another option)
 - Graphite
 - JRDS


Considerations:

 - authentication/authorisation (console should be for *admin only*)
 - cluster compatibility (how to access console for a node, can we see aggregate info?)
 - performance impact


Tools reference: http://theholyjava.wordpress.com/wiki/development/ops-monitoring/