PutDistributedMapCache

Description:

Gets the content of a FlowFile and puts it to a distributed map cache, using a cache key computed from FlowFile attributes. If the cache already contains the entry and the cache update strategy is 'keep original' the entry is not replaced.'

Tags:

map, cache, put, distributed

Properties:

In the list below, the names of required properties appear in bold. Any other properties (not in bold) are considered optional. The table also indicates any default values, and whether a property supports the NiFi Expression Language.

Display Name	API Name	Default Value	Allowable Values	Description
Cache Entry Identifier	Cache Entry Identifier			A FlowFile attribute, or the results of an Attribute Expression Language statement, which will be evaluated against a FlowFile in order to determine the cache key Supports Expression Language: true (will be evaluated using flow file attributes and variable registry)
Distributed Cache Service	Distributed Cache Service		Controller Service API: DistributedMapCacheClient Implementations: CassandraDistributedMapCache SimpleRedisDistributedMapCacheClientService CouchbaseMapCacheClient HBase_2_ClientMapCacheService DistributedMapCacheClientService RedisDistributedMapCacheClientService HazelcastMapCacheClient	The Controller Service that is used to cache flow files
Cache update strategy	Cache update strategy	Replace if present	Replace if present Keep original	Determines how the cache is updated if the cache already contains the entry
Max cache entry size	Max cache entry size	1 MB		The maximum amount of data to put into cache

Relationships:

Name	Description
success	Any FlowFile that is successfully inserted into cache will be routed to this relationship
failure	Any FlowFile that cannot be inserted into the cache will be routed to this relationship

Reads Attributes:

None specified.

Writes Attributes:

Name	Description
cached	All FlowFiles will have an attribute 'cached'. The value of this attribute is true, is the FlowFile is cached, otherwise false.

State management:

This component does not store state.

Restricted:

This component is not restricted.

Input requirement:

This component requires an incoming relationship.

System Resource Considerations: