package org.infinispan.stats;
/**
* Stats.
*
* @author Galder Zamarreño
* @since 4.0
*/
public interface Stats {
/**
* @return Number of seconds since cache started.
*/
long getTimeSinceStart();
/**
* @return Number of seconds since stats where reset
*/
long getTimeSinceReset();
/**
* Returns the number of entries currently in this cache instance. When
* the cache is configured with distribution, this method only returns the
* number of entries in the local cache instance. In other words, it does
* not attempt to communicate with other nodes to find out about the data
* stored in other nodes in the cluster that is not available locally.
*
* @return Number of entries currently in the cache, including passivated entries.
*/
int getCurrentNumberOfEntries();
/**
* The same as {@link #getCurrentNumberOfEntries()}, however passivated entries are not included.
*/
int getCurrentNumberOfEntriesInMemory();
/**
* Number of entries stored in cache since the cache started running.
*/
long getTotalNumberOfEntries();
/**
* The amount of off-heap memory used by this cache
* @return
*/
long getOffHeapMemoryUsed();
/**
* @return Number of put operations on the cache.
*/
long getStores();
/**
* @return Number of get operations.
*/
long getRetrievals();
/**
* @return Number of cache get hits.
*/
long getHits();
/**
* @return Number of cache get misses.
*/
long getMisses();
/**
* @return Number of cache removal hits.
*/
long getRemoveHits();
/**
* @return Number of cache removal misses.
*/
long getRemoveMisses();
/**
* @return Number of cache eviction.
*/
long getEvictions();
/**
* @return Average number of milliseconds for a cache get on the cache
*/
long getAverageReadTime();
/**
* @return Average number of milliseconds for a cache put on the cache
*/
long getAverageWriteTime();
/**
* @return Average number of milliseconds for a cache put on the cache
*/
long getAverageRemoveTime();
/**
* Reset statistics
*/
void reset();
/**
* Enables or disables statistics at runtime.
*
* @param enabled boolean indicating whether statistics should be enable or not
*/
void setStatisticsEnabled(boolean enabled);
}