java.lang.Object
- org.apache.cassandra.cache.CaffeineCache<K,V>

All Implemented Interfaces:

CacheSize, ICache<K,V>
```
public class CaffeineCache<K extends IMeasurableMemory,V extends IMeasurableMemory>
extends java.lang.Object
implements ICache<K,V>
```
An adapter from a Caffeine cache to the ICache interface. This provides an on-heap cache using the W-TinyLFU eviction policy (http://arxiv.org/pdf/1512.00727.pdf), which has a higher hit rate than an LRU.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`long`	`capacity()`
`void`	`clear()`
`boolean`	`containsKey(K key)`
`static <K extends IMeasurableMemory,V extends IMeasurableMemory> CaffeineCache<K,V>`	`create(long weightedCapacity)`
`static <K extends IMeasurableMemory,V extends IMeasurableMemory> CaffeineCache<K,V>`	`create(long weightedCapacity, com.github.benmanes.caffeine.cache.Weigher<K,V> weigher)`	Initialize a cache with initial capacity with weightedCapacity
`V`	`get(K key)`
`java.util.Iterator<K>`	`hotKeyIterator(int n)`
`boolean`	`isEmpty()`
`java.util.Iterator<K>`	`keyIterator()`
`void`	`put(K key, V value)`
`boolean`	`putIfAbsent(K key, V value)`
`void`	`remove(K key)`
`boolean`	`replace(K key, V old, V value)`
`void`	`setCapacity(long capacity)`
`int`	`size()`
`long`	`weightedSize()`

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

- Method Detail
  - create
```
public static <K extends IMeasurableMemory,V extends IMeasurableMemory> CaffeineCache<K,V> create(long weightedCapacity,
                                                                                                              com.github.benmanes.caffeine.cache.Weigher<K,V> weigher)
```
    Initialize a cache with initial capacity with weightedCapacity
  - create
```
public static <K extends IMeasurableMemory,V extends IMeasurableMemory> CaffeineCache<K,V> create(long weightedCapacity)
```
  - capacity
```
public long capacity()
```
    Specified by:
    
    capacity in interface CacheSize
  - setCapacity
```
public void setCapacity(long capacity)
```
    Specified by:
    
    setCapacity in interface CacheSize
  - isEmpty
```
public boolean isEmpty()
```
  - size
```
public int size()
```
    Specified by:
    
    size in interface CacheSize
  - weightedSize
```
public long weightedSize()
```
    Specified by:
    
    weightedSize in interface CacheSize
  - clear
```
public void clear()
```
    Specified by:
    
    clear in interface ICache<K extends IMeasurableMemory,V extends IMeasurableMemory>
  - get
```
public V get(K key)
```
    Specified by:
    
    get in interface ICache<K extends IMeasurableMemory,V extends IMeasurableMemory>
  - put
```
public void put(K key,
                V value)
```
    Specified by:
    
    put in interface ICache<K extends IMeasurableMemory,V extends IMeasurableMemory>
  - putIfAbsent
```
public boolean putIfAbsent(K key,
                           V value)
```
    Specified by:
    
    putIfAbsent in interface ICache<K extends IMeasurableMemory,V extends IMeasurableMemory>
  - replace
```
public boolean replace(K key,
                       V old,
                       V value)
```
    Specified by:
    
    replace in interface ICache<K extends IMeasurableMemory,V extends IMeasurableMemory>
  - remove
```
public void remove(K key)
```
    Specified by:
    
    remove in interface ICache<K extends IMeasurableMemory,V extends IMeasurableMemory>
  - keyIterator
```
public java.util.Iterator<K> keyIterator()
```
    Specified by:
    
    keyIterator in interface ICache<K extends IMeasurableMemory,V extends IMeasurableMemory>
  - hotKeyIterator
```
public java.util.Iterator<K> hotKeyIterator(int n)
```
    Specified by:
    
    hotKeyIterator in interface ICache<K extends IMeasurableMemory,V extends IMeasurableMemory>
  - containsKey
```
public boolean containsKey(K key)
```
    Specified by:
    
    containsKey in interface ICache<K extends IMeasurableMemory,V extends IMeasurableMemory>

Class CaffeineCache<K extends IMeasurableMemory,​V extends IMeasurableMemory>

Method Summary

Methods inherited from class java.lang.Object

Method Detail

create

create

capacity

setCapacity

isEmpty

size

weightedSize

clear

get

put

putIfAbsent

replace

remove

keyIterator

hotKeyIterator

containsKey

Class CaffeineCache<K extends IMeasurableMemory,V extends IMeasurableMemory>