A must task in load testing is workload generation: how to apply load to your system. It is important to understand all possible options; a single approach may not work in all situations. The main choices are to generate workload manually, to use a load testing tool or to create a program to do it. Many tools allow you to use different ways of recording/playback and programming. This paper discusses pros and cons of each approach based mainly on experience with distributed business applications.
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