| Interface | Description | 
|---|---|
| ActiveSensor | The ActiveSensor measures the number of threads currently using a resource. | 
| ActiveTimeSensor | |
| AverageSensor | |
| CountSensor | |
| Meter | Meters gather information from Sensors in a ResinSystem. | 
| SampleMetadataAware | |
| SemaphoreSensor | SemaphoreSample tracks resource allocations from a pool. | 
| Sensor | A Sensor is an event-based measurement interface inserted into the
 running program to gather information as events occur. | 
| TimeSensor |