UpDownCounter

Up/Down Counter collects measurements of a value that accumulates over time, but can also go down again. An example could be a queue length, it will increase and decrease with the number of work items in the queue. Counters are obtained from a Meter as shown below:

LongCounter upDownCounter = meter
	.counterBuilder("my-up-downcounter")
	.setDescription("My test up/down counter")
	.setUnit("my-unit")
	.build();			

upDownCounter.add(25);