--- layout: doc_page title: "Apache Cassandra" --- # Apache Cassandra To use this Apache Druid (incubating) extension, make sure to [include](../../operations/including-extensions.html) `druid-cassandra-storage` extension. [Apache Cassandra](http://www.datastax.com/what-we-offer/products-services/datastax-enterprise/apache-cassandra) can also be leveraged for deep storage. This requires some additional Druid configuration as well as setting up the necessary schema within a Cassandra keystore.