Cache (Jersey 3.1.9 API)

All Known Subinterfaces:

LoadingCache<K,V>
```
public interface Cache<K,V>
```
A semi-persistent mapping from keys to values. Cache entries are manually added using #get(Object, Callable) or put(Object, Object), and are stored in the cache until either evicted or manually invalidated.

Implementations of this interface are expected to be thread-safe, and can be safely accessed by multiple concurrent threads.

Note that while this class is still annotated as Beta, the API is frozen from a consumer's standpoint. In other words existing methods are all considered non-Beta and won't be changed without going through an 18 month deprecation cycle; however new methods may be added at any time.

Since:

10.0

Author:

Charles Fry

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`V`	`getIfPresent(Object key)`	Returns the value associated with `key` in this cache, or `null` if there is no cached value for `key`.
`void`	`put(K key, V value)`	Associates `value` with `key` in this cache.

- Method Detail
  - getIfPresent
```
V getIfPresent(Object key)
```
    Returns the value associated with key in this cache, or null if there is no cached value for key.
    
    Since:
    
    11.0
  - put
```
void put(K key,
         V value)
```
    Associates value with key in this cache. If the cache previously contained a value associated with key, the old value is replaced by value.
    
    Prefer #get(Object, Callable) when using the conventional "if cached, return; otherwise create, cache and return" pattern.
    
    Since:
    
    11.0