Monitor the performance of each DDS node that is part of the DDS service by checking the metrics on the Decision Data Store tab. Information on this tab is refreshed every 60 seconds.
Node ID – The identification number of the node in the cluster.
Disk usage – The disk space used by Cassandra records on this node.
Free disk space – The free disk space that is allocated to this node.
Owns – The percentage of Cassandra records that are stored on this node.
Read latency (75th percentile) – In 75 percent of read queries since the node was started, the read latency time has been equal to or less than the value of this parameter.
Write latency (75th percentile) – In 75 percent of write queries since the node was started, the write latency time has been equal to or less than the value of this parameter.
Read throughput (moving average) – The moving average of all the read queries from the last five minutes.
Write throughput (moving average) – The moving average of all the write queries from the last five minutes.