Monal Daxini presented on the declarative benchmarking tool NDBench and its Cassandra plugin. The tool allows users to define performance test profiles that specify the Cassandra schema, queries, load patterns, and other parameters. It executes the queries against Cassandra clusters and collects metrics to analyze performance. The plugin supports all Cassandra data types and allows testing different versions. Netflix uses it to validate data models and certify Cassandra upgrades. Future enhancements include adding more data generators and supporting other data stores.