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Oracle® Coherence Java API Reference
v3.5.3
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## com.tangosol.net.partition
Class PartitionSplittingBackingMap.AggregatingCacheStatistics

    java.lang.Object
      com.tangosol.net.partition.PartitionSplittingBackingMap.AggregatingCacheStatistics

All Implemented Interfaces:
  CacheStatistics

Enclosing class:
  PartitionSplittingBackingMap

    public class PartitionSplittingBackingMap.AggregatingCacheStatistics

extends java.lang.Object
implements CacheStatistics

An implementation of the CacheStatics interface that aggregates across the CacheStatics objects provided by each of the backing maps corresponding to the partitions managed by this PartitionSplittingBackingMap.

Constructor Summary
`PartitionSplittingBackingMap.AggregatingCacheStatistics()`

Method Summary
`double` | `getAverageGetMillis()` Determine the average number of milliseconds per `get()` invocation since the cache statistics were last reset.
`double` | `getAverageHitMillis()` Determine the average number of milliseconds per `get()` invocation that is a hit.
`double` | `getAverageMissMillis()` Determine the average number of milliseconds per `get()` invocation that is a miss.
`double` | `getAveragePutMillis()` Determine the average number of milliseconds per `put()` invocation since the cache statistics were last reset.
`long` | `getCacheHits()` Determine the rough number of cache hits since the cache statistics were last reset.
`long` | `getCacheHitsMillis()` Determine the total number of milliseconds (since that last statistics reset) for the `get()` operations for which an entry existed in this map.
`long` | `getCacheMisses()` Determine the rough number of cache misses since the cache statistics were last reset.
`long` | `getCacheMissesMillis()` Determine the total number of milliseconds (since that last statistics reset) for the `get()` operations for which no entry existed in this map.
`long` | `getCachePrunes()` Determine the rough number of cache pruning cycles since the cache statistics were last reset.
`long` | `getCachePrunesMillis()` Determine the total number of milliseconds (since that last statistics reset) spent on cache pruning.
`double` | `getHitProbability()` Determine the rough probability (0 <= p <= 1) that the next invocation will be a hit, based on the statistics collected since the last reset of the cache statistics.
`long` | `getTotalGets()` Determine the total number of `get()` operations since the cache statistics were last reset.
`long` | `getTotalGetsMillis()` Determine the total number of milliseconds spent on `get()` operations since the cache statistics were last reset.
`long` | `getTotalPuts()` Determine the total number of `put()` operations since the cache statistics were last reset.
`long` | `getTotalPutsMillis()` Determine the total number of milliseconds spent on `put()` operations since the cache statistics were last reset.
`void` | `resetHitStatistics()` Reset all of the cache statistics.
`java.lang.String` | `toString()` For debugging purposes, format the statistics information into a human-readable format.

Constructor Detail

### PartitionSplittingBackingMap.AggregatingCacheStatistics

    public PartitionSplittingBackingMap.AggregatingCacheStatistics()

Method Detail

### getTotalGets

    public long getTotalGets()

  Determine the total number of `get()` operations since the cache statistics were last reset.

  Specified by:
    `getTotalGets` in interface `CacheStatistics`
  Returns:
    the total number of `get()` operations

### getTotalGetsMillis

    public long getTotalGetsMillis()

  Determine the total number of milliseconds spent on `get()` operations since the cache statistics were last reset.

  Specified by:
    `getTotalGetsMillis` in interface `CacheStatistics`
  Returns:
    the total number of milliseconds processing `get()` operations

### getAverageGetMillis

    public double getAverageGetMillis()

  Determine the average number of milliseconds per `get()` invocation since the cache statistics were last reset.

  Specified by:
    `getAverageGetMillis` in interface `CacheStatistics`
  Returns:
    the average number of milliseconds per `get()` operation

### getTotalPuts

    public long getTotalPuts()

  Determine the total number of `put()` operations since the cache statistics were last reset.

  Specified by:
    `getTotalPuts` in interface `CacheStatistics`
  Returns:
    the total number of `put()` operations

### getTotalPutsMillis

    public long getTotalPutsMillis()

  Determine the total number of milliseconds spent on `put()` operations since the cache statistics were last reset.

  Specified by:
    `getTotalPutsMillis` in interface `CacheStatistics`
  Returns:
    the total number of milliseconds processing `put()` operations

### getAveragePutMillis

    public double getAveragePutMillis()

  Determine the average number of milliseconds per `put()` invocation since the cache statistics were last reset.

  Specified by:
    `getAveragePutMillis` in interface `CacheStatistics`
  Returns:
    the average number of milliseconds per `put()` operation

### getCacheHits

    public long getCacheHits()

  Determine the rough number of cache hits since the cache statistics were last reset.

  A cache hit is a read operation invocation (e.g. `get()`) for which an entry exists in this map.

  Specified by:
    `getCacheHits` in interface `CacheStatistics`
  Returns:
    the number of `get()` calls that have been served by existing cache entries

### getCacheHitsMillis

    public long getCacheHitsMillis()

  Determine the total number of milliseconds (since that last statistics reset) for the `get()` operations for which an entry existed in this map.

  Specified by:
    `getCacheHitsMillis` in interface `CacheStatistics`
  Returns:
    the total number of milliseconds for the `get()` operations that were hits

### getAverageHitMillis

    public double getAverageHitMillis()

  Determine the average number of milliseconds per `get()` invocation that is a hit.

  Specified by:
    `getAverageHitMillis` in interface `CacheStatistics`
  Returns:
    the average number of milliseconds per cache hit

### getCacheMisses

    public long getCacheMisses()

  Determine the rough number of cache misses since the cache statistics were last reset.

  A cache miss is a `get()` invocation that does not have an entry in this map.

  Specified by:
    `getCacheMisses` in interface `CacheStatistics`
  Returns:
    the number of `get()` calls that failed to find an existing cache entry because the requested key was not in the cache

### getCacheMissesMillis

    public long getCacheMissesMillis()

  Determine the total number of milliseconds (since that last statistics reset) for the `get()` operations for which no entry existed in this map.

  Specified by:
    `getCacheMissesMillis` in interface `CacheStatistics`
  Returns:
    the total number of milliseconds (since that last statistics reset) for the `get()` operations that were misses

### getAverageMissMillis

    public double getAverageMissMillis()

  Determine the average number of milliseconds per `get()` invocation that is a miss.

  Specified by:
    `getAverageMissMillis` in interface `CacheStatistics`
  Returns:
    the average number of milliseconds per cache miss

### getHitProbability

    public double getHitProbability()

  Determine the rough probability (0 <= p <= 1) that the next invocation will be a hit, based on the statistics collected since the last reset of the cache statistics.

  Specified by:
    `getHitProbability` in interface `CacheStatistics`
  Returns:
    the cache hit probability (0 <= p <= 1)

### getCachePrunes

    public long getCachePrunes()

  Determine the rough number of cache pruning cycles since the cache statistics were last reset.

  For the LocalCache implementation, this refers to the number of times that the `prune()` method is executed.

  Specified by:
    `getCachePrunes` in interface `CacheStatistics`
  Returns:
    the total number of cache pruning cycles (since that last statistics reset)

### getCachePrunesMillis

    public long getCachePrunesMillis()

  Determine the total number of milliseconds (since that last statistics reset) spent on cache pruning.

  For the LocalCache implementation, this refers to the time spent in the `prune()` method.

  Specified by:
    `getCachePrunesMillis` in interface `CacheStatistics`
  Returns:
    the total number of milliseconds (since that last statistics reset) for cache pruning operations

### resetHitStatistics

    public void resetHitStatistics()

  Reset all of the cache statistics.

  Note that the method name implies that only the hit statistics are cleared, which is not the case; all of the statistics are cleared.

  Specified by:
    `resetHitStatistics` in interface `CacheStatistics`

### toString

    public java.lang.String toString()

  For debugging purposes, format the statistics information into a human-readable format.

  Returns:
    a String representation of this object

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Oracle® Coherence Java API Reference
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