Configuring the Decision Data Store service

Start storing data that is used in decision management processes by configuring the Decision Data Store (DDS) service and the corresponding Cassandra database.

To optimize the performance of operations on customer data, the data for a specific customer is stored on the same node even if the data is on different nodes.

Before you begin: Add at least one DDS node to start the DDS service. For more information, see Adding nodes to Decision Management services.
Note: You can add extra DDS nodes to increase the volume of data that can be handled by your decision management system or to accelerate the decision-making processes.
  1. In the header of Dev Studio, click Configure > Decisioning > Infrastructure > Services > Decision Data Store.
  2. In the Decision data store nodes section, click Edit settings.
  3. Optional: To use an internal Cassandra database, perform the following actions:
    1. Clear the Use external Cassandra cluster check box.
    2. In the Cassandra CQL port field, enter 9042.
    3. In the Cassandra user ID and Cassandra password fields, enter dnode_ext.
    4. In the Logging level list, select a logging level.
      For more information about Cassandra driver loggers, see the DataStax documentation for Cassandra.
  4. Optional: To use an external Cassandra database, perform the following actions:
    1. Select the Use external Cassandra cluster check box.
    2. In the Cassandra host(s) field, enter a comma-separated list of Cassandra host names or IP addresses.
    3. In the Cassandra CQL port field, enter the default Cassandra Query Language (CQL) port.
      To connect to the decision data node cluster by using third-party or custom tools to load or extract data through the Thrift protocol, enter 9160. To use the CQL3 Cassandra protocol, enter 9042.
    4. In the Cassandra user ID and Cassandra password fields, specify the credentials for the external Cassandra database.
    5. In the Logging level list, select a logging level.
      For more information about Cassandra driver loggers, see the DataStax documentation for Cassandra.
  5. Click Submit.
  6. Optional: On the Decision Data Store tab, on the Execute menu, select an action to run for the selected DDS node.
    For more information, see Managing decision data nodes.
  7. Optional: To display the status parameters of a selected DDS node, on the Decision Data Store tab, click the row for that node.
    For more information, see Status parameters of Decision Data Store nodes.