The digital era we live in makes users highly sensitive when it comes to application performance and loading time. Speed has become one of the most important metrics when it comes to digital products. So, before introducing your software product to the market you must have answers to the following questions: how does the system perform in real-world conditions or when using different network providers? What happens if thousands of users want to access the software simultaneously? To answer these questions, we need to generate load and get feedback on performance. That is where performance testing and load testing come handy. Professional performance testing companies know exactly how to make sure that your IT system's performance will meet your business requirements.
The concepts of performance testing, load testing, stress testing are sometimes mistakenly used interchangeably.
Performance testing is the testing aimed to figure it out how the components of a system are performing under given conditions. Resource usage, scalability, and reliability of the product are also validated under this testing. It is the subset of performance engineering, which is focused on addressing performance issues in the design and architecture of a software product.
Performance Testing is the superset for both load & stress testing. Thus, Performance testing is basically a very wide term. Performance testing does not aim to find defects in the application. The primary goal of performance testing includes establishing the benchmark behaviour of the system. There are number of industry-defined benchmarks that should be met during performance testing. It also does not pass or fail the test. Rather, it addresses the critical task of setting the benchmark and standard for an application. Performance testing should be done very accurately. Close monitoring of the application or system performance is the primary characteristic of performance testing.
The Load testing aims to emulate the actions of real users. It uses "virtual users" to determine when the solution reaches its threshold limit. It is a subset of performance testing which can be executed by utilizing any of the suitable automation tools available in the market. Load testing monitors peak performance, server throughput, response time under various load levels, amount of user applications the system can handle without affecting the performance.