com.commercetools.sync.commons.utils

Class CaffeineReferenceIdToKeyCacheImpl

java.lang.Object

com.commercetools.sync.commons.utils.CaffeineReferenceIdToKeyCacheImpl

All Implemented Interfaces:

ReferenceIdToKeyCache

public class CaffeineReferenceIdToKeyCacheImpl
extends java.lang.Object
implements ReferenceIdToKeyCache

A Caffeine cache to store reference id to key pairs.

Designed to be used as an reference in memory cache as a part of BaseTransformServiceImpl instances, such as ProductTransformService.

The cache is implemented by the caffeine library which implements a LRU based cache eviction strategy. It means unused id to key pairs will be evicted, also it stores max 10000 pairs to ensure the minimum memory consumption.

Constructor Summary

Constructors

Constructor and Description
CaffeineReferenceIdToKeyCacheImpl()

Method Summary

Modifier and Type	Method and Description
void	add(java.lang.String key, java.lang.String value)
void	addAll(java.util.Map<java.lang.String,java.lang.String> idToKeyValues)
void	clearCache() Discards all entries in the cache.
boolean	containsKey(java.lang.String key)
java.lang.String	get(java.lang.String key)
void	remove(java.lang.String key)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CaffeineReferenceIdToKeyCacheImpl

public CaffeineReferenceIdToKeyCacheImpl()

Method Detail

add

public void add(java.lang.String key,
                java.lang.String value)

Specified by:

add in interface ReferenceIdToKeyCache

Parameters:

key - key with which the specified value is to be associated.

value - value to be associated with the specified key.

remove

public void remove(java.lang.String key)

Specified by:

remove in interface ReferenceIdToKeyCache

Parameters:

key - key whose mapping is to be removed from the map

addAll

public void addAll(java.util.Map<java.lang.String,java.lang.String> idToKeyValues)

Specified by:

addAll in interface ReferenceIdToKeyCache

Parameters:

idToKeyValues - mappings to be stored in this cache.

containsKey

public boolean containsKey(java.lang.String key)

Specified by:

containsKey in interface ReferenceIdToKeyCache

Parameters:

key - key whose presence in this map is to be tested

Returns:

true if this map contains a mapping for the specified key in the cache.

get

public java.lang.String get(java.lang.String key)

Specified by:

get in interface ReferenceIdToKeyCache

Parameters:

key - the key whose associated value is to be returned.

Returns:

the value to which the specified key is mapped, or null if the cache contains no mapping for the key.

clearCache

public void clearCache()

Description copied from interface: ReferenceIdToKeyCache

Discards all entries in the cache.

Specified by:

clearCache in interface ReferenceIdToKeyCache