org.infinispan.jcache

Class RICacheStatistics

java.lang.Object

org.infinispan.jcache.RICacheStatistics

All Implemented Interfaces:

Serializable, javax.cache.management.CacheStatisticsMXBean

public class RICacheStatistics
extends Object
implements javax.cache.management.CacheStatisticsMXBean, Serializable

The reference implementation of CacheStatisticsMXBean.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
RICacheStatistics(AdvancedCache<?,?> cache) Constructs a cache statistics object

Method Summary

Methods

Modifier and Type	Method and Description
void	clear() Statistics will also automatically be cleared if internal counters overflow.
float	getAverageGetTime() The mean time to execute gets.
float	getAveragePutTime() The mean time to execute puts.
float	getAverageRemoveTime() The mean time to execute removes.
long	getCacheEvictions()
long	getCacheGets() The total number of requests to the cache.
float	getCacheHitPercentage() Returns cache hits as a percentage of total gets.
long	getCacheHits()
long	getCacheMisses()
float	getCacheMissPercentage() Returns cache misses as a percentage of total gets.
long	getCachePuts() The total number of puts to the cache.
long	getCacheRemovals() The total number of removals from the cache.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RICacheStatistics

public RICacheStatistics(AdvancedCache<?,?> cache)

Constructs a cache statistics object

Parameters:

cache - the associated cache

Method Detail

clear

public void clear()

Statistics will also automatically be cleared if internal counters overflow.

Specified by:

clear in interface javax.cache.management.CacheStatisticsMXBean

getCacheHits

public long getCacheHits()

Specified by:

getCacheHits in interface javax.cache.management.CacheStatisticsMXBean

Returns:

the number of hits

getCacheHitPercentage

public float getCacheHitPercentage()

Returns cache hits as a percentage of total gets.

Specified by:

getCacheHitPercentage in interface javax.cache.management.CacheStatisticsMXBean

Returns:

the percentage of successful hits, as a decimal

getCacheMisses

public long getCacheMisses()

Specified by:

getCacheMisses in interface javax.cache.management.CacheStatisticsMXBean

Returns:

the number of misses

getCacheMissPercentage

public float getCacheMissPercentage()

Returns cache misses as a percentage of total gets.

Specified by:

getCacheMissPercentage in interface javax.cache.management.CacheStatisticsMXBean

Returns:

the percentage of accesses that failed to find anything

getCacheGets

public long getCacheGets()

The total number of requests to the cache. This will be equal to the sum of the hits and misses.

A "get" is an operation that returns the current or previous value.

Specified by:

getCacheGets in interface javax.cache.management.CacheStatisticsMXBean

Returns:

the number of hits

getCachePuts

public long getCachePuts()

The total number of puts to the cache.

A put is counted even if it is immediately evicted. A replace includes a put and remove.

Specified by:

getCachePuts in interface javax.cache.management.CacheStatisticsMXBean

Returns:

the number of hits

getCacheRemovals

public long getCacheRemovals()

The total number of removals from the cache. This does not include evictions, where the cache itself initiates the removal to make space.

Specified by:

getCacheRemovals in interface javax.cache.management.CacheStatisticsMXBean

Returns:

the number of removals

getCacheEvictions

public long getCacheEvictions()

Specified by:

getCacheEvictions in interface javax.cache.management.CacheStatisticsMXBean

Returns:

the number of evictions from the cache

getAverageGetTime

public float getAverageGetTime()

The mean time to execute gets.

In a read-through cache the time taken to load an entry on miss is not included in get time.

Specified by:

getAverageGetTime in interface javax.cache.management.CacheStatisticsMXBean

Returns:

the time in µs

getAveragePutTime

public float getAveragePutTime()

The mean time to execute puts.

Specified by:

getAveragePutTime in interface javax.cache.management.CacheStatisticsMXBean

Returns:

the time in µs

getAverageRemoveTime

public float getAverageRemoveTime()

The mean time to execute removes.

Specified by:

getAverageRemoveTime in interface javax.cache.management.CacheStatisticsMXBean

Returns:

the time in µs