CsrfPreventionFilter.LruCache (Apache Tomcat 10.1.56 API Documentation)

java.lang.Object
- org.apache.catalina.filters.CsrfPreventionFilter.LruCache<T>

Type Parameters:

T - The type held by this cache.

All Implemented Interfaces:

java.io.Serializable, CsrfPreventionFilter.NonceCache<T>

Enclosing class:

CsrfPreventionFilter
```
protected static class CsrfPreventionFilter.LruCache<T>
extends java.lang.Object
implements CsrfPreventionFilter.NonceCache<T>
```
Despite its name, this is a FIFO cache not an LRU cache. Using an older nonce should not delay its removal from the cache in favour of more recent values.

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor Description

LruCache(int cacheSize)
Construct a new LruCache.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`add(T key)`	Add a nonce to the cache.
`boolean`	`contains(T key)`	Check if the cache contains the given nonce.

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

- Constructor Detail
  - LruCache
```
public LruCache(int cacheSize)
```
    Construct a new LruCache.
    
    Parameters:
    
    cacheSize - The maximum number of entries in the cache
- Method Detail
  - add
```
public void add(T key)
```
    Description copied from interface: CsrfPreventionFilter.NonceCache
    
    Add a nonce to the cache.
    
    Specified by:
    
    add in interface CsrfPreventionFilter.NonceCache<T>
    
    Parameters:
    
    key - The nonce to add
  - contains
```
public boolean contains(T key)
```
    Description copied from interface: CsrfPreventionFilter.NonceCache
    
    Check if the cache contains the given nonce.
    
    Specified by:
    
    contains in interface CsrfPreventionFilter.NonceCache<T>
    
    Parameters:
    
    key - The nonce to check
    
    Returns:
    
    true if the nonce is in the cache