Package org.apache.struts2.ognl

Class OgnlCaffeineCache<K,V>

java.lang.Object

org.apache.struts2.ognl.OgnlCaffeineCache<K,V>

Type Parameters:

K - The type for the cache key entries

V - The type for the cache value entries

All Implemented Interfaces:

OgnlCache<K,V>

public class OgnlCaffeineCache<K,V>
extends Object
implements OgnlCache<K,V>

This OGNL Cache implementation is backed by Caffeine which uses the Window TinyLfu algorithm.

An appropriate eviction limit should be chosen for your specific application based on factors and requirements such as:

• Quantity and complexity of actions
• Volume of requests
• Rate limits and attack potential/patterns
• Memory constraints

Constructor Summary

Constructors

Constructor	Description
OgnlCaffeineCache(int evictionLimit, int initialCapacity)

Method Summary

Modifier and Type	Method	Description
void	clear()
V	get(K key)
int	getEvictionLimit()
void	put(K key, V value)
void	putIfAbsent(K key, V value)
void	setEvictionLimit(int cacheEvictionLimit)
int	size()

Methods inherited from class java.lang.Object

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

Constructor Details

OgnlCaffeineCache

public OgnlCaffeineCache(int evictionLimit,
 int initialCapacity)

Method Details

get

public V get(K key)

Specified by:

get in interface OgnlCache<K,V>

put

public void put(K key,
 V value)

Specified by:

put in interface OgnlCache<K,V>

putIfAbsent

public void putIfAbsent(K key,
 V value)

Specified by:

putIfAbsent in interface OgnlCache<K,V>

size

public int size()

Specified by:

size in interface OgnlCache<K,V>

clear

public void clear()

Specified by:

clear in interface OgnlCache<K,V>

getEvictionLimit

public int getEvictionLimit()

Specified by:

getEvictionLimit in interface OgnlCache<K,V>

setEvictionLimit

public void setEvictionLimit(int cacheEvictionLimit)

Specified by:

setEvictionLimit in interface OgnlCache<K,V>