This lightning talk will cover our team's efforts at Bloomberg to run a set of performance tests using Locust, an open source Python-based user load testing tool. The talk will review our motivation for running performance tests, how we set up our testing environment in a distributed fashion so that we can generate a high load, how Locust helps with this, and how to automate this testing process. The talk will also cover how testing can prevent potential risks when releasing new software to your client base.