Performance testing is often a neglected stage of testing. Performance tests are usually performed immediately before delivery, but then there is not enough time to correct any detected problems. Performance testing simulates a large number of simultaneous users and examines how your system behaves under real stress, and it helps you in detecting performance bottlenecks in the application.
By regular execution of performance tests and the timely detection of problems, you will achieve the required quality and verify requirements of acceptance tests. In order to achieve satisfactory performance of your application it is necessary to perform the following performance tests:
Load test checks if your system behaves properly in defined terms and load.
Stress test verifies the maximum load your application can withstand. Its purpose is to discover the maximum possible number of simultaneous users.
Technologies with which we can test by using tools for performance testing are: WEB applications (HTTP, HTTPS protocols), WEB services, SAP, Siebel, Citrix and Windows applications that communicate with server by TCP Socket connection.
