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 Expression Language Guide.

Name	Default Value	Allowable Values	Description
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
Distributed Cache Service		Controller Service API: DistributedMapCacheClient Implementation: DistributedMapCacheClientService	The Controller Service that is used to cache flow files
Cache update strategy	replace	* Replace if present * Keep original	Determines how the cache is updated if the cache already contains the entry
Max cache entry size	1 MB		The maximum amount of data to put into cache

Relationships:

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

See Also:

DistributedMapCacheClientService, DistributedMapCacheServer, FetchDistributedMapCache