SOFTWARE DEVELOPER AND ASPIRING TRAVELER
Load testing is the process of subjecting a software application or a computing device to stress to measure its performance levels under normal conditions or test its limits. It is a more conservative method as compared to stress testing since it ensures that the system can perform the tasks that it should handle without breaking or destroying it. Web developer’s advice on load testing website applications in case there is the worry of poor user experience, suspected loss of revenue, fear of the users abandoning their product and maintenance of the brand's reputation. For a successful testing, an audience that comprises of virtual/ concurrent users will be using the software and the statistics collected for analysis.
Concurrent users usually connected to one application follow a given interval for the performance of a given task. An example of the functions includes; downloading several large files on the internet, sending many different documents to a printer from various servers. A website that allows order online has many concurrent users logged in, where one is placing an order, another one is writing a review, another user is making an online purchase, and all this gets done on one server. Definition of concurrent user testing, therefore, is the number of people using a particular online resource at a given time. Looking at the number of cores present in a CPU is one of the ways to determine how many concurrent users am infrastructure can us. One core supports 220-250 concurrent users.
Stress testing is a deliberate testing beyond what a system cannot handle until it breaks down. It determines how much pressure hardware or software can handle before getting to a breaking point as well as getting to know the modes of failure and safe usage limits for the computing devices. Load tests done on a system that it cannot handle may cause a breakdown, and this turns into a stress test.
The various available tools for used for load testing include; Apache, JMeter, HP LoadRunner, LoadView (have a peek at their site) and Microsoft VSTS. The different tools have different features, protocols, and ranging prices for licenses. The tools aid in the creation of the virtual users who build up with time.