Do you care about your web applications performance in production? The answer to that question is hopefully a clear YES, which leads to the question: How can you make sure you do not deploy changes to your production site that impair performance and scalability? Load tests might come to your mind, but more often than not, these are only run rarely, not continuously throughout the development lifecycle. Wouldnt it be great to detect scalability issues based on the automated tests you already wrote? This session shows how you can measure relevant metrics like the number of database statements or number of calls to 3rd party services along your delivery pipeline, and common problem patterns you can identify and solve with those metrics.