MetricsServlet (metrics.codahale.com/) configuration

config.java

MetricRegistry metricRegistry = new MetricRegistry();
ctx.getServletContext().setAttribute("com.codahale.metrics.servlets.MetricsServlet.registry", metricRegistry);

web.xml

<servlet>
	<servlet-name>MetricsServlet</servlet-name>
	<servlet-class>com.codahale.metrics.servlets.MetricsServlet</servlet-class>
</servlet>

<servlet-mapping>
	<servlet-name>MetricsServlet</servlet-name>
	<url-pattern>/metrics</url-pattern>
</servlet-mapping>