%% Last Updated: - [[2021-04-01]] %% You can begin building a workload model by gathering data from production about what users are actually doing on your application. Real historical data on the traffic over a wide enough time period (a year or six months) is ideal, so that you get a broad view. If you have something like [Google Analytics](http://google.com/analytics) or other tools such as New Relic, even better. But what if your application, or the specific feature you’re launching, is new, and you don’t have any historical data to look through? In this case, the answer is to involve business analysts as well as developers and estimate the traffic patterns. If you have data for other similar transactions, you can analyse them and extrapolate best guesses from them about the new transactions. ## Related - [[Web analytics tools]]