Package org.cache2k.core.api

Class CommonMetrics.BlackHole

java.lang.Object

org.cache2k.core.api.CommonMetrics.BlackHole

All Implemented Interfaces:

CommonMetrics, CommonMetrics.Updater

Enclosing interface:

CommonMetrics

public static class CommonMetrics.BlackHole
extends Object
implements CommonMetrics.Updater

Nested Class Summary

Nested classes/interfaces inherited from interface org.cache2k.core.api.CommonMetrics

CommonMetrics.BlackHole, CommonMetrics.Updater

Constructor Summary

Constructors

Constructor	Description
BlackHole()

Method Summary

Modifier and Type	Method	Description
void	expiredKept()
void	explicitLoad(long millis)
long	getExpiredKeptCount()	Number of entries expired, but kept in the cache because of ongoing processing on the entry (pinned) or because keepData is enabled.
long	getExplicitLoadCount()	Entry was explicitly loaded, that is every load that is not read through or refresh.
long	getGoneSpinCount()	Entry was removed while waiting to get the mutation lock.
long	getHeapHitButNoReadCount()	Operation was accessing a heap entry and counted a hit if it is existing, but it should not be counted as read/get operation (e.g.
long	getHeapHitCount()
long	getLoadExceptionCount()	Counter of exceptions thrown from the loader.
long	getLoadMillis()	Accumulated milliseconds spend in load operations.
long	getPeekHitNotFreshCount()	Peek, but entry available was not fresh (expired).
long	getPeekMissCount()	Incremented if data is requested from the cache but no entry is present (e.g.
long	getPutHitCount()	Counted for a put that updates an existing cache entry.
long	getPutNewEntryCount()	Counted for a put that triggers the insert of a new cache entry.
long	getReadThroughCount()	Entry was loaded, triggered by a get().
long	getRefreshCount()	Entry was loaded again, triggered by timer
long	getRefreshedHitCount()	Entry on probation for refresh got hit.
long	getRefreshRejectedCount()	Refresh submit failed.
long	getSuppressedExceptionCount()	Counter of suppressed exceptions from the loader
long	getTimerEventCount()	Count of timer events delivered to this cache.
void	goneSpin()
void	heapHit()
void	heapHitButNoRead()
boolean	isDisabled()	True if statistics are disabled.
void	loadException()
void	peekHitNotFresh()
void	peekMiss()
void	putHit()
void	putNewEntry()
void	readThrough(long millis)
void	refresh(long millis)
void	refreshedHit()
void	refreshRejected()
void	suppressedException()
void	timerEvent()

Methods inherited from class java.lang.Object

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

Constructor Detail

BlackHole

public BlackHole()

Method Detail

heapHit

public void heapHit()

Specified by:

heapHit in interface CommonMetrics.Updater

putNewEntry

public void putNewEntry()

Specified by:

putNewEntry in interface CommonMetrics.Updater

putHit

public void putHit()

Specified by:

putHit in interface CommonMetrics.Updater

heapHitButNoRead

public void heapHitButNoRead()

Specified by:

heapHitButNoRead in interface CommonMetrics.Updater

timerEvent

public void timerEvent()

Specified by:

timerEvent in interface CommonMetrics.Updater

readThrough

public void readThrough(long millis)

Specified by:

readThrough in interface CommonMetrics.Updater

explicitLoad

public void explicitLoad(long millis)

Specified by:

explicitLoad in interface CommonMetrics.Updater

refresh

public void refresh(long millis)

Specified by:

refresh in interface CommonMetrics.Updater

loadException

public void loadException()

Specified by:

loadException in interface CommonMetrics.Updater

suppressedException

public void suppressedException()

Specified by:

suppressedException in interface CommonMetrics.Updater

expiredKept

public void expiredKept()

Specified by:

expiredKept in interface CommonMetrics.Updater

peekMiss

public void peekMiss()

Specified by:

peekMiss in interface CommonMetrics.Updater

peekHitNotFresh

public void peekHitNotFresh()

Specified by:

peekHitNotFresh in interface CommonMetrics.Updater

refreshedHit

public void refreshedHit()

Specified by:

refreshedHit in interface CommonMetrics.Updater

refreshRejected

public void refreshRejected()

Specified by:

refreshRejected in interface CommonMetrics.Updater

goneSpin

public void goneSpin()

Specified by:

goneSpin in interface CommonMetrics.Updater

getHeapHitCount

public long getHeapHitCount()

Specified by:

getHeapHitCount in interface CommonMetrics

getPutNewEntryCount

public long getPutNewEntryCount()

Description copied from interface: CommonMetrics

Counted for a put that triggers the insert of a new cache entry.

Specified by:

getPutNewEntryCount in interface CommonMetrics

See Also:

InternalCacheInfo.getPutCount()

getPutHitCount

public long getPutHitCount()

Description copied from interface: CommonMetrics

Counted for a put that updates an existing cache entry.

Specified by:

getPutHitCount in interface CommonMetrics

See Also:

InternalCacheInfo.getPutCount()

getHeapHitButNoReadCount

public long getHeapHitButNoReadCount()

Description copied from interface: CommonMetrics

Operation was accessing a heap entry and counted a hit if it is existing, but it should not be counted as read/get operation (e.g. contains). This is a correction counter applied to the get counter.

Specified by:

getHeapHitButNoReadCount in interface CommonMetrics

getTimerEventCount

public long getTimerEventCount()

Description copied from interface: CommonMetrics

Count of timer events delivered to this cache.

Specified by:

getTimerEventCount in interface CommonMetrics

See Also:

InternalCacheInfo.getTimerEventCount()

getReadThroughCount

public long getReadThroughCount()

Description copied from interface: CommonMetrics

Entry was loaded, triggered by a get(). A read through event means also a get, load and miss event.

Specified by:

getReadThroughCount in interface CommonMetrics

See Also:

InternalCacheInfo.getLoadCount()

getExplicitLoadCount

public long getExplicitLoadCount()

Description copied from interface: CommonMetrics

Entry was explicitly loaded, that is every load that is not read through or refresh.

Specified by:

getExplicitLoadCount in interface CommonMetrics

See Also:

InternalCacheInfo.getExplicitLoadCount()

getRefreshCount

public long getRefreshCount()

Description copied from interface: CommonMetrics

Entry was loaded again, triggered by timer

Specified by:

getRefreshCount in interface CommonMetrics

See Also:

InternalCacheInfo.getRefreshCount()

getLoadMillis

public long getLoadMillis()

Description copied from interface: CommonMetrics

Accumulated milliseconds spend in load operations.

Specified by:

getLoadMillis in interface CommonMetrics

See Also:

InternalCacheInfo.getLoadMillis()

getLoadExceptionCount

public long getLoadExceptionCount()

Description copied from interface: CommonMetrics

Counter of exceptions thrown from the loader.

Specified by:

getLoadExceptionCount in interface CommonMetrics

See Also:

InternalCacheInfo.getLoadExceptionCount()

getSuppressedExceptionCount

public long getSuppressedExceptionCount()

Description copied from interface: CommonMetrics

Counter of suppressed exceptions from the loader

Specified by:

getSuppressedExceptionCount in interface CommonMetrics

See Also:

InternalCacheInfo.getSuppressedExceptionCount()

getExpiredKeptCount

public long getExpiredKeptCount()

Description copied from interface: CommonMetrics

Number of entries expired, but kept in the cache because of ongoing processing on the entry (pinned) or because keepData is enabled.

Specified by:

getExpiredKeptCount in interface CommonMetrics

See Also:

InternalCacheInfo.getExpiredCount()

getPeekMissCount

public long getPeekMissCount()

Description copied from interface: CommonMetrics

Incremented if data is requested from the cache but no entry is present (e.g. via peek or get). If a load is started this is not incremented, since the actual miss is recorded via the load/readThrough counter.

Specified by:

getPeekMissCount in interface CommonMetrics

getPeekHitNotFreshCount

public long getPeekHitNotFreshCount()

Description copied from interface: CommonMetrics

Peek, but entry available was not fresh (expired). This is effectively a miss, but we count separately for debugging purposes. Always 0 if not Cache2kBuilder.keepDataAfterExpired(boolean)

Specified by:

getPeekHitNotFreshCount in interface CommonMetrics

getRefreshedHitCount

public long getRefreshedHitCount()

Description copied from interface: CommonMetrics

Entry on probation for refresh got hit.

Specified by:

getRefreshedHitCount in interface CommonMetrics

See Also:

InternalCacheInfo.getRefreshedHitCount()

getRefreshRejectedCount

public long getRefreshRejectedCount()

Description copied from interface: CommonMetrics

Refresh submit failed. Happens if the loader executor has not enough available resources and rejects the refresh task.

Specified by:

getRefreshRejectedCount in interface CommonMetrics

getGoneSpinCount

public long getGoneSpinCount()

Description copied from interface: CommonMetrics

Entry was removed while waiting to get the mutation lock.

Specified by:

getGoneSpinCount in interface CommonMetrics

See Also:

InternalCacheInfo.getGoneSpinCount()

isDisabled

public boolean isDisabled()

Description copied from interface: CommonMetrics

True if statistics are disabled.

Specified by:

isDisabled in interface CommonMetrics