anchor.diff:  The **metrics:** component allows to collect various metrics directly
   from Camel routes. Supported metric types
   are link:#MetricsComponent-counter[counter], link:#MetricsComponent-histogram[histogram],
  -link:#MetricsComponent-meter[meter] and link:#MetricsComponent-timer[timer]. http://metrics.codahale.com/[Metrics] provides
  +link:#MetricsComponent-meter[meter] and link:#MetricsComponent-timer[timer]. http://metrics.dropwizard.io[Metrics] provides
   simple way to measure behaviour of application. Configurable
   reporting backend is enabling different integration options for
   collecting and visualizing statistics. The component also provides
   a `MetricsRoutePolicyFactory` which allows to expose route statistics
  -using codehale metrics, see bottom of page for details.
  +using Dropwizard Metrics, see bottom of page for details.
   
   Maven users will need to add the following dependency to their `pom.xml`
   for this component:
  
positive.code: ----
  
  CAUTION: `MetricRegistry` uses internal thread(s) for reporting. There is no
  public API in version 3.0.1 for users to clean up on exit. Thus using
  Camel Metrics Component leads to Java classloader leak and my cause
  `OutOfMemoryErrors` in some cases.
  
  
negative.code: ^^^^^^^^^^^^^^^^^^^^^^^^^
  
  This factory allows to add a link:routepolicy.html[RoutePolicy] for each
  route which exposes route utilization statistics using Dropwizard metrics.
  This factory can be used in Java and XML as the examples below
  demonstrates. 
  
  