# Package org.apache.ignite.spi.metric

Contains common classes and interfaces for metric SPI implementations.

See: Description

- Interface Summary
  Interface | Description
  --- | ---
  BooleanMetric | Interface for the metrics that holds boolean primitive.
  DoubleMetric | Interface for the metrics that holds double primitive.
  HistogramMetric | Histogram metric calculates counts of measurements that gets into each bounds interval.
  IntMetric | Interface for the metrics that holds int primitive.
  LongMetric | Interface for the metrics that holds long primitive.
  Metric | Base interface for all metrics.
  MetricExporterSpi | Exporter of metric information to the external recipient.
  ObjectMetric<T> | Interface for the metrics that holds typed value.
  ReadOnlyMetricManager | Read only metric manager.
  ReadOnlyMetricRegistry | Read only metric registry.

## Package org.apache.ignite.spi.metric Description

Contains common classes and interfaces for metric SPI implementations.

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Ignite Database and Caching Platform | : ver. 2.10.0
Release Date | : March 10 2021