As a developer, you can use the cbworkloadgen tool to test and monitor your Couchbase cluster's performance by generating random workloads and observing the activity of your cluster. The tool provides basic testing functionality but is not designed for performance or stress testing, allowing you to tune the ratio of set:get operations, document size, number of concurrent worker threads, and more. To start a test, simply execute the cbworkloadgen tool with the IP address of the running node and the -n option. You can also control the duration and complexity of your workload by adjusting parameters such as the number of items to insert, item size, and thread count. The results will be displayed in the Couchbase admin UI, providing valuable insights into your cluster's performance and helping you optimize your applications for better scalability and efficiency.