Package org.springframework.pulsar.cache.provider

Interface CacheProvider<K,V>

Type Parameters:

K - the type of cache key

V - the type of cache entries

All Known Implementing Classes:

CaffeineCacheProvider

public interface CacheProvider<K,V>

Defines the contract for a cache provider.

Author:

Chris Bono

Method Summary

Modifier and Type	Method	Description
Map<K,V>	asMap()	Returns a view of the entries stored in the cache as a thread-safe map.
V	getOrCreateIfAbsent(K key, Function<K,V> createEntryFunction)	Returns the value associated with the key in the cache.
void	invalidateAll(BiConsumer<K,V> onInvalidateEntry)	Discards all entries in the cache and calls the onInvalidateEntry callback (if provided) for each entry.

Method Details

getOrCreateIfAbsent

V getOrCreateIfAbsent(K key,
 Function<K,V> createEntryFunction)

Returns the value associated with the key in the cache.

If the key is not already associated with an entry in the cache, the createEntryFunction is used to compute the value to cache and return.

Parameters:

key - the cache key

createEntryFunction - the function to compute a value

Returns:

the current (existing or computed) value associated with the specified key, or null if the computed value is null

asMap

Map<K,V> asMap()

Returns a view of the entries stored in the cache as a thread-safe map. Modifications made to the map directly affect the cache.

Returns:

a thread-safe view of the cache supporting all optional Map operations

invalidateAll

void invalidateAll(BiConsumer<K,V> onInvalidateEntry)

Discards all entries in the cache and calls the onInvalidateEntry callback (if provided) for each entry.

Parameters:

onInvalidateEntry - callback invoked for each invalidated entry