Performance and Load Testing: Don’t Guess, Test
It is fatal to guess what the performance and load requirements for your applications are..
A key nonfunctional requirement for applications is that they perform acceptably under both normal and heavy-load conditions, but this is only the beginning. The trick is in understanding the application's breaking point, how often will the application be used and in what ways.
Assuming you know what your performance requirements are for the new application, security device or network is like building a web application without considering the vagaries of the Internet and its users, third-party components and services, and geographic latency.
Applications are ideally not built for today. They are or at least should be build for the future. Knowing an application's breaking point is important to predicting whether the application will be able to handle the expected volume and to determining how much headroom the application has for future growth. Hence the testing tool should provide a test harness to put load on the application under several conditions and from multiple locations to test performance and availability as well as determine capacity.
Tests like load testing should ideally be done as close as possible to real life (as if the system were up and running) - multiple locations, multiple languages, over different time zones run dynamically having a large number of parameters. The challenge in load testing is often getting such a test lab up and running. Cloud testing could be the answer to rapidly provision and tear down such test labs.
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“In addition to the experience and expertise AppLabs brought to the table, we were tremendously pleased with their flexibility. Based on the quality assessment, our organization was strongly inclined to continue our work with AppLabs in the actual completion and testing of our new application. This effort resulted in a significant cost savings for FGBS, as well as giving us the assurance our new application would be truly prepared to succeed.”
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