<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"></meta><title>CassandraDistributedMapCache</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;">CassandraDistributedMapCache</h1><h2>Description: </h2><p>Provides a DistributedMapCache client that is based on Apache Cassandra.</p><h3>Tags: </h3><p>map, cache, distributed, cassandra</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>Session Provider</strong></td><td>cassandra-dmc-session-provider</td><td></td><td id="allowable-values"><strong>Controller Service API: </strong><br/>CassandraSessionProviderService<br/><strong>Implementation: </strong><a href="../org.apache.nifi.service.CassandraSessionProvider/index.html">CassandraSessionProvider</a></td><td id="description">The client service that will configure the cassandra client connection.</td></tr><tr><td id="name"><strong>Table Name</strong></td><td>cassandra-dmc-table-name</td><td></td><td id="allowable-values"></td><td id="description">The name of the table where the cache will be stored.<br/><strong>Supports Expression Language: true (will be evaluated using variable registry only)</strong></td></tr><tr><td id="name"><strong>Key Field Name</strong></td><td>cassandra-dmc-key-field-name</td><td></td><td id="allowable-values"></td><td id="description">The name of the field that acts as the unique key. (The CQL type should be "blob")<br/><strong>Supports Expression Language: true (will be evaluated using variable registry only)</strong></td></tr><tr><td id="name"><strong>Value Field Name</strong></td><td>cassandra-dmc-value-field-name</td><td></td><td id="allowable-values"></td><td id="description">The name of the field that will store the value. (The CQL type should be "blob")<br/><strong>Supports Expression Language: true (will be evaluated using variable registry only)</strong></td></tr><tr><td id="name">TTL</td><td>cassandra-dmc-ttl</td><td></td><td id="allowable-values"></td><td id="description">If configured, this will set a TTL (Time to Live) for each row inserted into the table so that old cache items expire after a certain period of time.<br/><strong>Supports Expression Language: true (will be evaluated using variable registry only)</strong></td></tr></table><h3>State management: </h3>This component does not store state.<h3>Restricted: </h3>This component is not restricted.<h3>System Resource Considerations:</h3>None specified.</body></html>