Sometimes when testing applications, you might need to repeatedly execute a particular request or group of requests for a certain number of times over a given period. For example, simulating a user paging through the various posts for a blog, going through their monthly transaction activities on a financial website, or paging through the search results of matching products on an e-commerce website, and so on. For all these cases, Loop Controllers come to the rescue.

Loop Controllers are controllers that specialize in executing all their contained child samplers repeatedly for a given number of times. They are a perfect fit for the paging scenarios described previously.