When examining the performance of your data model, firing up the Cassandra-Stress tool should be your first option. Cassandra-Stress comes built-in with Apache Cassandra, and allows you to benchmark your data model with predefined queries for reads, writes, and mixed operational loads. When running these queries, Cassandra-Stress will report figures on latency and operations per second. Its ultimate value lies in the information that it can provide about your data model, and its ability to perform at scale and under load.
Cassandra-Stress
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