LRUCache (Undertow 2.1.0.Final API)

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java.lang.Object
- io.undertow.server.handlers.cache.LRUCache<K,V>

```
public class LRUCache<K,V>
extends Object
```
A non-blocking cache where entries are indexed by a key.

To reduce contention, entry allocation and eviction execute in a sampling fashion (entry hits modulo N). Eviction follows an LRU approach (oldest sampled entries are removed first) when the cache is out of capacity.

This cache can also be configured to run in FIFO mode, rather than LRU.

Author:

Jason T. Greene, Stuart Douglas

- Nested Class Summary
  
  Nested Classes
  Modifier and Type Class and Description
  
  static class LRUCache.CacheEntry<K,V>
- Constructor Summary
  
  Constructors
  Constructor and Description
  
  LRUCache(int maxEntries, int maxAge)
  
  LRUCache(int maxEntries, int maxAge, boolean fifo)
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method and Description
  
  void add(K key, V newValue)
  
  void clear()
  
  V get(K key)
  
  V remove(K key)
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LRUCache

public LRUCache(int maxEntries,
                int maxAge)

LRUCache

public LRUCache(int maxEntries,
                int maxAge,
                boolean fifo)

Method Detail

add

public void add(K key,
                V newValue)

get
```
public V get(K key)
```

remove
```
public V remove(K key)
```

clear
```
public void clear()
```

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