What Is Load Testing?

Load testing is a type of performance testing that simulates real-world load on any software, application or website. Without this test, your practice may not succeed miserably in real-world conditions. That’s why we’re building tools like Retrace to help you track application performance and fix bugs before your code goes into production. Load testing examines how the system behaves during normal and high loads and determines whether a system, piece of software, or computing device can cope with high loads given the high demand of end users. This tool is usually applied when a software development project is about to be completed.

How Does It Work

How to install the Test? A load test can be performed with end-to-end IT systems or smaller components such as database servers or firewalls. During the process response time, the speed or capacity of the system or component begins to die. When system components significantly extend response times or become unstable, it is likely that the system will reach its maximum operating capacity. When this happens, bottlenecks must be identified and solutions provided.

Why Load Testing?

  • Load testing gives confidence in the system & its reliability and performance.
  • Load Testing helps identify the bottlenecks in the system under heavy user stress scenarios before they happen in a production environment.
  • Load testing gives excellent protection against poor performance and accommodates complementary strategies for performance management and monitoring of a production environment.

Goals of Load Testing

Loading testing identifies the following problems before moving the application to market or Production:

  • Response time for each transaction
  • Performance of System components under various loads
  • Performance of Database components under different loads
  • Network delay between the client and the server
  • Software design issues
  • Server configuration issues like a Web server, application server, database server etc.
  • Hardware limitation issues like CPU maximization, memory limitations, network bottleneck, etc.

Load testing will determine whether the system needs to be fine-tuned or modification of hardware and software is required to improve performance.

What are Load Testing Tools?

Load testing tools are the software you use to affect the load. Most load test tools do this at the protocol level so you can simulate generating HTTP requests over the wire. These tools also include the ability to parse the response from a target server or application, as well as the ability to use the content in the response to claim that a value exists or reuse values in a future request.

Simulating protocol-level payload requires a deep understanding of how systems, especially the web browser, work. Typically, a modern website these days will generate a lot of traffic through wite in the form of HTTP requests. Still, the browser itself will do much of the work, including getting and creating dynamic content, parsing JavaScript, processing cookies, and other security-related features. To simulate this behavior at the protocol level requires excellent technical skill that prevents the success of your load testing efforts.

More recently, flood has been a strong advocate for simulating load at the browser level. When this approach is applied with the economics of scale provided by cloud-based website load testing, customers can realize the benefits of browser-level load testing tools while trading in complexity for concurrency. Load testing tools such as Flood Element, based on Google puppeteer, simulate realistic user behavior in the browser, which helps to circumvent much of the complexity and high technical skill required to begin load testing tools at the protocol level.