<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"></meta><title>PutDistributedMapCache</title><link rel="stylesheet" href="../../../../../css/component-usage.css" type="text/css"></link></head><script type="text/javascript">window.onload = function(){if(self==top) { document.getElementById('nameHeader').style.display = "inherit"; } }</script><body><h1 id="nameHeader" style="display: none;">PutDistributedMapCache</h1><h2>Description: </h2><p>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.'</p><h3>Tags: </h3><p>map, cache, put, distributed</p><h3>Properties: </h3><p>In the list below, the names of required properties appear in <strong>bold</strong>. Any other properties (not in bold) are considered optional. The table also indicates any default values, and whether a property supports the <a href="../../../../../html/expression-language-guide.html">NiFi Expression Language</a>.</p><table id="properties"><tr><th>Display Name</th><th>API Name</th><th>Default Value</th><th>Allowable Values</th><th>Description</th></tr><tr><td id="name"><strong>Cache Entry Identifier</strong></td><td>Cache Entry Identifier</td><td></td><td id="allowable-values"></td><td id="description">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<br/><strong>Supports Expression Language: true (will be evaluated using flow file attributes and variable registry)</strong></td></tr><tr><td id="name"><strong>Distributed Cache Service</strong></td><td>Distributed Cache Service</td><td></td><td id="allowable-values"><strong>Controller Service API: </strong><br/>DistributedMapCacheClient<br/><strong>Implementations: </strong><a href="../../../nifi-distributed-cache-services-nar/1.19.1/org.apache.nifi.distributed.cache.client.DistributedMapCacheClientService/index.html">DistributedMapCacheClientService</a><br/><a href="../../../nifi-redis-nar/1.19.1/org.apache.nifi.redis.service.RedisDistributedMapCacheClientService/index.html">RedisDistributedMapCacheClientService</a><br/><a href="../../../nifi-hbase_1_1_2-client-service-nar/1.19.1/org.apache.nifi.hbase.HBase_1_1_2_ClientMapCacheService/index.html">HBase_1_1_2_ClientMapCacheService</a><br/><a href="../../../nifi-hazelcast-services-nar/1.19.1/org.apache.nifi.hazelcast.services.cacheclient.HazelcastMapCacheClient/index.html">HazelcastMapCacheClient</a><br/><a href="../../../nifi-hbase_2-client-service-nar/1.19.1/org.apache.nifi.hbase.HBase_2_ClientMapCacheService/index.html">HBase_2_ClientMapCacheService</a><br/><a href="../../../nifi-cassandra-services-nar/1.19.1/org.apache.nifi.controller.cassandra.CassandraDistributedMapCache/index.html">CassandraDistributedMapCache</a><br/><a href="../../../nifi-couchbase-nar/1.19.1/org.apache.nifi.couchbase.CouchbaseMapCacheClient/index.html">CouchbaseMapCacheClient</a></td><td id="description">The Controller Service that is used to cache flow files</td></tr><tr><td id="name"><strong>Cache update strategy</strong></td><td>Cache update strategy</td><td id="default-value">Replace if present</td><td id="allowable-values"><ul><li>Replace if present <img src="../../../../../html/images/iconInfo.png" alt="Adds the specified entry to the cache, replacing any value that is currently set." title="Adds the specified entry to the cache, replacing any value that is currently set."></img></li><li>Keep original <img src="../../../../../html/images/iconInfo.png" alt="Adds the specified entry to the cache, if the key does not exist." title="Adds the specified entry to the cache, if the key does not exist."></img></li></ul></td><td id="description">Determines how the cache is updated if the cache already contains the entry</td></tr><tr><td id="name">Max cache entry size</td><td>Max cache entry size</td><td id="default-value">1 MB</td><td id="allowable-values"></td><td id="description">The maximum amount of data to put into cache</td></tr></table><h3>Relationships: </h3><table id="relationships"><tr><th>Name</th><th>Description</th></tr><tr><td>success</td><td>Any FlowFile that is successfully inserted into cache will be routed to this relationship</td></tr><tr><td>failure</td><td>Any FlowFile that cannot be inserted into the cache will be routed to this relationship</td></tr></table><h3>Reads Attributes: </h3>None specified.<h3>Writes Attributes: </h3><table id="writes-attributes"><tr><th>Name</th><th>Description</th></tr><tr><td>cached</td><td>All FlowFiles will have an attribute 'cached'. The value of this attribute is true, is the FlowFile is cached, otherwise false.</td></tr></table><h3>State management: </h3>This component does not store state.<h3>Restricted: </h3>This component is not restricted.<h3>Input requirement: </h3>This component requires an incoming relationship.<h3>System Resource Considerations:</h3>None specified.<h3>See Also:</h3><p><a href="../../../nifi-distributed-cache-services-nar/1.19.1/org.apache.nifi.distributed.cache.client.DistributedMapCacheClientService/index.html">DistributedMapCacheClientService</a>, <a href="../../../nifi-distributed-cache-services-nar/1.19.1/org.apache.nifi.distributed.cache.server.map.DistributedMapCacheServer/index.html">DistributedMapCacheServer</a>, <a href="../org.apache.nifi.processors.standard.FetchDistributedMapCache/index.html">FetchDistributedMapCache</a></p></body></html>