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 Details

    • OgnlCaffeineCache

      public OgnlCaffeineCache(int evictionLimit, int initialCapacity)

  • Method Details

    • get

      public V get(K key)
      Specified by:
      get in interface OgnlCache<K,V>

    • computeIfAbsent

      public V computeIfAbsent(K key, Function<? super K,? extends V> mappingFunction)
      Specified by:
      computeIfAbsent 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>

    • remove

      public V remove(K key)
      Description copied from interface: OgnlCache
      Removes the mapping for the given key, if present.
      Specified by:
      remove in interface OgnlCache<K,V>
      Parameters:
      key - the key to remove
      Returns:
      the previous value associated with the key, or null if none

    • 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>