AbstractCache.SimpleStatsCounter

java.lang.Object
- com.google.common.cache.AbstractCache.SimpleStatsCounter

All Implemented Interfaces:

AbstractCache.StatsCounter

Enclosing class:

AbstractCache < K , V>
```
@Beta
public static final class AbstractCache.SimpleStatsCounter
extends Object
implements AbstractCache.StatsCounter
```
A thread-safe AbstractCache.StatsCounter implementation for use by Cache implementors.

Since:

10.0

Constructor Summary

Constructors

Constructor and Description
`SimpleStatsCounter()` Constructs an instance with all counts initialized to zero.

Method Summary

All Methods

Instance Methods

Concrete Methods
Modifier and Type	Method and Description
`void`	`incrementBy(AbstractCache.StatsCounter other)` Increments all counters by the values in `other`.
`void`	`recordEviction()` Records the eviction of an entry from the cache.
`void`	`recordHits(int count)` Records cache hits.
`void`	`recordLoadException(long loadTime)` Records the failed load of a new entry.
`void`	`recordLoadSuccess(long loadTime)` Records the successful load of a new entry.
`void`	`recordMisses(int count)` Records cache misses.
`CacheStats`	`snapshot()` Returns a snapshot of this counter's values.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - SimpleStatsCounter
```
public SimpleStatsCounter()
```
    Constructs an instance with all counts initialized to zero.
- Method Detail
  - recordHits
```
public void recordHits(int count)
```
    Description copied from interface: AbstractCache.StatsCounter
    
    Records cache hits. This should be called when a cache request returns a cached value.
    
    Specified by:
    
    recordHits in interface AbstractCache.StatsCounter
    
    Parameters:
    
    count - the number of hits to record
    
    Since:
    
    11.0
  - recordMisses
```
public void recordMisses(int count)
```
    Description copied from interface: AbstractCache.StatsCounter
    
    Records cache misses. This should be called when a cache request returns a value that was not found in the cache. This method should be called by the loading thread, as well as by threads blocking on the load. Multiple concurrent calls to Cache lookup methods with the same key on an absent value should result in a single call to either recordLoadSuccess or recordLoadException and multiple calls to this method, despite all being served by the results of a single load operation.
    
    Specified by:
    
    recordMisses in interface AbstractCache.StatsCounter
    
    Parameters:
    
    count - the number of misses to record
    
    Since:
    
    11.0
  - recordLoadSuccess
```
public void recordLoadSuccess(long loadTime)
```
    Description copied from interface: AbstractCache.StatsCounter
    
    Records the successful load of a new entry. This should be called when a cache request causes an entry to be loaded, and the loading completes successfully. In contrast to AbstractCache.StatsCounter.recordMisses(int), this method should only be called by the loading thread.
    
    Specified by:
    
    recordLoadSuccess in interface AbstractCache.StatsCounter
    
    Parameters:
    
    loadTime - the number of nanoseconds the cache spent computing or retrieving the new value
  - recordLoadException
```
public void recordLoadException(long loadTime)
```
    Description copied from interface: AbstractCache.StatsCounter
    
    Records the failed load of a new entry. This should be called when a cache request causes an entry to be loaded, but an exception is thrown while loading the entry. In contrast to AbstractCache.StatsCounter.recordMisses(int), this method should only be called by the loading thread.
    
    Specified by:
    
    recordLoadException in interface AbstractCache.StatsCounter
    
    Parameters:
    
    loadTime - the number of nanoseconds the cache spent computing or retrieving the new value prior to an exception being thrown
  - recordEviction
```
public void recordEviction()
```
    Description copied from interface: AbstractCache.StatsCounter
    
    Records the eviction of an entry from the cache. This should only been called when an entry is evicted due to the cache's eviction strategy, and not as a result of manual invalidations.
  - snapshot
```
public CacheStats snapshot()
```
    Description copied from interface: AbstractCache.StatsCounter
    
    Returns a snapshot of this counter's values. Note that this may be an inconsistent view, as it may be interleaved with update operations.
  - incrementBy
```
public void incrementBy(AbstractCache.StatsCounter other)
```
    Increments all counters by the values in other.

Class AbstractCache.SimpleStatsCounter

Constructor Summary

Constructors

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

SimpleStatsCounter

Method Detail

recordHits

recordMisses

recordLoadSuccess

recordLoadException

recordEviction

snapshot

incrementBy