Store decision management data in a backing database, such as Cassandra, and manage
the cluster by configuring the Decision Data Store (DDS) service. Examples of decision
management data include customer data, decision results, and input data for adaptive and
In on-premises and client-managed cloud environments, you have the following deployment
options for Cassandra:
- In this model, you need to install and operate your own Cassandra cluster, and connect
it to Pega Platform. This option is recommended as it ensures future
compatibility. For more information, see Connecting to an external Cassandra database through the Decision Data Store service.
- Managed (embedded, internal)
In this model, the nodes that are designated to hosting the Decision Data Store have
their Cassandra Java virtual machine (JVM) started and stopped for them, by the JVM that
is hosting the Pega Platform instance. This type of configuration is
deprecated starting in Pega Platform version 8.6 and therefore does
not ensure future compatibility. It is not recommended for new deployments. For more
In Pega Cloud environments, the Cassandra database is
preconfigured. No action is required.