public interface CacheMetrics
IgniteCache.metrics()
to obtain metrics for a cache.Modifier and Type | Method and Description |
---|---|
float |
getAverageGetTime()
The mean time to execute gets.
|
float |
getAveragePutTime()
The mean time to execute puts.
|
float |
getAverageRemoveTime()
The mean time to execute removes.
|
float |
getAverageTxCommitTime()
The mean time to execute tx commit.
|
float |
getAverageTxRollbackTime()
The mean time to execute tx rollbacks.
|
long |
getCacheEvictions()
The total number of evictions from the cache.
|
long |
getCacheGets()
The total number of requests to the cache.
|
float |
getCacheHitPercentage()
This is a measure of cache efficiency.
|
long |
getCacheHits()
The number of get requests that were satisfied by the cache.
|
long |
getCacheMisses()
A miss is a get request that is not satisfied.
|
float |
getCacheMissPercentage()
Returns the percentage of cache accesses that did not find a requested entry
in the cache.
|
long |
getCachePuts()
The total number of puts to the cache.
|
long |
getCacheRemovals()
The total number of removals from the cache.
|
long |
getCacheTxCommits()
Gets total number of transaction commits.
|
long |
getCacheTxRollbacks()
Gets total number of transaction rollbacks.
|
int |
getDhtEvictQueueCurrentSize()
Gets current size of evict queue used to batch up evictions.
|
int |
getKeySize()
Gets number of keys in the cache, possibly with
null values. |
String |
getKeyType()
Determines the required type of keys for this
Cache , if any. |
long |
getOffHeapAllocatedSize()
Gets memory size allocated in off-heap.
|
long |
getOffHeapBackupEntriesCount()
Gets number of backup entries stored in off-heap memory.
|
long |
getOffHeapEntriesCount()
Gets number of entries stored in off-heap memory.
|
long |
getOffHeapEvictions()
The total number of evictions from the off-heap memory.
|
long |
getOffHeapGets()
The total number of get requests to the off-heap memory.
|
float |
getOffHeapHitPercentage()
Gets the percentage of hits on off-heap memory.
|
long |
getOffHeapHits()
The number of get requests that were satisfied by the off-heap memory.
|
long |
getOffHeapMisses()
A miss is a get request that is not satisfied by off-heap memory.
|
float |
getOffHeapMissPercentage()
Gets the percentage of misses on off-heap memory.
|
long |
getOffHeapPrimaryEntriesCount()
Gets number of primary entries stored in off-heap memory.
|
long |
getOffHeapPuts()
The total number of put requests to the off-heap memory.
|
long |
getOffHeapRemovals()
The total number of removals from the off-heap memory.
|
int |
getSize()
Gets number of non-
null values in the cache. |
int |
getTxCommitQueueSize()
Gets committed transaction queue size.
|
int |
getTxCommittedVersionsSize()
Gets number of cached committed transaction IDs.
|
int |
getTxDhtCommitQueueSize()
Gets committed DHT transaction queue size.
|
int |
getTxDhtCommittedVersionsSize()
Gets number of cached committed DHT transaction IDs.
|
int |
getTxDhtPrepareQueueSize()
Gets prepared DHT transaction queue size.
|
int |
getTxDhtRolledbackVersionsSize()
Gets number of cached rolled back DHT transaction IDs.
|
int |
getTxDhtStartVersionCountsSize()
Gets DHT start version counts map size.
|
int |
getTxDhtThreadMapSize()
Gets transaction DHT per-thread map size.
|
int |
getTxDhtXidMapSize()
Gets transaction DHT per-Xid map size.
|
int |
getTxPrepareQueueSize()
Gets prepared transaction queue size.
|
int |
getTxRolledbackVersionsSize()
Gets number of cached rolled back transaction IDs.
|
int |
getTxStartVersionCountsSize()
Gets start version counts map size.
|
int |
getTxThreadMapSize()
Gets transaction per-thread map size.
|
int |
getTxXidMapSize()
Gets transaction per-Xid map size.
|
String |
getValueType()
Determines the required type of values for this
Cache , if any. |
int |
getWriteBehindBufferSize()
Gets count of entries that were processed by the write-behind store and have not been
flushed to the underlying store yet.
|
int |
getWriteBehindCriticalOverflowCount()
Gets count of write buffer overflow events in progress at the moment.
|
int |
getWriteBehindErrorRetryCount()
Gets count of cache entries that are in a store-retry state.
|
long |
getWriteBehindFlushFrequency()
Gets the cache flush frequency.
|
int |
getWriteBehindFlushSize()
Gets the maximum size of the write-behind buffer.
|
int |
getWriteBehindFlushThreadCount()
Gets the number of flush threads that will perform store update operations.
|
int |
getWriteBehindStoreBatchSize()
Gets the maximum count of similar (put or remove) operations that can be grouped to a single batch.
|
int |
getWriteBehindTotalCriticalOverflowCount()
Gets count of write buffer overflow events since initialization.
|
boolean |
isEmpty()
Returns
true if this cache is empty. |
boolean |
isManagementEnabled()
Checks whether management is enabled on this cache.
|
boolean |
isReadThrough()
Determines if a
Cache should operate in read-through mode. |
boolean |
isStatisticsEnabled()
Checks whether statistics collection is enabled in this cache.
|
boolean |
isStoreByValue()
Whether storeByValue
true or storeByReference false . |
boolean |
isWriteBehindEnabled()
Returns
true if write-behind is enabled. |
boolean |
isWriteThrough()
Determines if a
Cache should operate in "write-through"
mode. |
String |
name()
Gets name of this cache.
|
long getCacheHits()
float getCacheHitPercentage()
long getCacheMisses()
float getCacheMissPercentage()
long getCacheGets()
long getCachePuts()
long getCacheRemovals()
long getCacheEvictions()
float getAverageGetTime()
float getAveragePutTime()
float getAverageRemoveTime()
float getAverageTxCommitTime()
float getAverageTxRollbackTime()
long getCacheTxCommits()
long getCacheTxRollbacks()
String name()
long getOffHeapGets()
long getOffHeapPuts()
long getOffHeapRemovals()
long getOffHeapEvictions()
long getOffHeapHits()
float getOffHeapHitPercentage()
long getOffHeapMisses()
float getOffHeapMissPercentage()
long getOffHeapEntriesCount()
long getOffHeapPrimaryEntriesCount()
long getOffHeapBackupEntriesCount()
long getOffHeapAllocatedSize()
int getSize()
null
values in the cache.null
values in the cache.int getKeySize()
null
values.boolean isEmpty()
true
if this cache is empty.True
if this cache is empty.int getDhtEvictQueueCurrentSize()
int getTxThreadMapSize()
int getTxXidMapSize()
int getTxCommitQueueSize()
int getTxPrepareQueueSize()
int getTxStartVersionCountsSize()
int getTxCommittedVersionsSize()
int getTxRolledbackVersionsSize()
int getTxDhtThreadMapSize()
int getTxDhtXidMapSize()
int getTxDhtCommitQueueSize()
int getTxDhtPrepareQueueSize()
int getTxDhtStartVersionCountsSize()
int getTxDhtCommittedVersionsSize()
int getTxDhtRolledbackVersionsSize()
boolean isWriteBehindEnabled()
true
if write-behind is enabled.True
if write-behind is enabled.int getWriteBehindFlushSize()
0
, then flush is performed only on time-elapsing basis. However,
when this value is 0
, the cache critical size is set to
CacheConfiguration.DFLT_WRITE_BEHIND_CRITICAL_SIZE
int getWriteBehindFlushThreadCount()
long getWriteBehindFlushFrequency()
0
, then flush is performed only when buffer size exceeds flush size.int getWriteBehindStoreBatchSize()
int getWriteBehindTotalCriticalOverflowCount()
int getWriteBehindCriticalOverflowCount()
int getWriteBehindErrorRetryCount()
int getWriteBehindBufferSize()
String getKeyType()
Cache
, if any."java.lang.Object"
if the type is undefined.String getValueType()
Cache
, if any."java.lang.Object"
if the type is undefined.boolean isStoreByValue()
true
or storeByReference false
.
When true
, both keys and values are stored by value.
When false
, both keys and values are stored by reference.
Caches stored by reference are capable of mutation by any threads holding
the reference. The effects are:
When a cache is storeByValue, any mutation to the key or value does not affect the key of value stored in the cache.
The default value is true
.
True
if the cache is store by value.boolean isStatisticsEnabled()
The default value is false
.
True
if statistics collection is enabled.boolean isManagementEnabled()
The default value is false
.
true
if management is enabled.boolean isReadThrough()
Cache
should operate in read-through mode.
The default value is false
True
when a Cache
is in
"read-through" mode.CacheLoader
boolean isWriteThrough()
Cache
should operate in "write-through"
mode.
will appropriately cause the configured CacheWriter
to be invoked.
The default value is false
True
when a Cache
is in "write-through" mode.CacheWriter
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Ignite Fabric : ver. 2.0.0 Release Date : April 30 2017