In this tutorial we'll use `pgbench`, PostgreSQL's built-in benchmarking tool, to run load tests on a DigitalOcean Managed PostgreSQL Database. We'll dive in to connection pools, describe how they work, and show how to create one using the Cloud Control panel. Finally, using results from the `pgbench` tests, we'll demonstrate how using a connection pool can be an inexpensive method of increasing database throughput.