Both of these are performance testing types. Before we discuss the difference between Load Testing and Stress Testing, let us know more about performance testing.
Performance testing ensures that every application stays stable, works fast, and is scalable for all of its users. You can easily test the response to your application by simulating the traffic it receives along with its concurrent users. This way, you can identify the bottlenecks in the infrastructure as well as the code of your app. Thus, it becomes easy for a developer to make any necessary changes or adjustments before their code reaches the people in production.
What is Load Testing?
It is basically a type of performance testing. Using load testing, we can determine the overall performance of a software application, software product, or any other system by simulating conditions based on real life.
What is Stress Testing?
It is basically a type of software testing using which we can verify the reliability and stability of any given system. Stress Testing helps in determining the robustness of a system. Using this technique, we determine how the system handles its errors under some conditions that might be of heavy load.
Difference Between Load Testing and Stress Testing
| Parameters | Load Testing | Stress Testing |
| Purpose of Testing | We perform load testing for testing the overall performance of a software application, software product, or any other system under an extreme load (simulated according to real-life implications). | We perform stress testing for testing the overall robustness of any given software application or other systems under a very extreme load. |
| Break Threshold | In the case of Load Testing, the threshold of a break is basically its load limit. | In the case of Stress Testing, we can consider the load limit to be above the break’s threshold. |
| Mode of Testing | In this case, we test the performance of a system or software under the influence of multiple users and their activities (as performed in real life). | In this case, we test the performance of a system of software under varying amounts of data. |
| Resources Involved | A huge amount of users get involved in Load Testing. | Too many users and a large amount of data get involved in Stress Testing. |
| Uses | We perform load testing for finding the upper limit in any application or system. | We perform stress testing to determine how a system or application performs under pressure. |
| Tested Factor | The factor that we test in load testing is the performance of the system. | The factor that we test in stress testing is the stability and robustness of a system. |
| End Result | A user can determine their system’s/ application’s operating capacity. | A user can ensure the overall security of their system/ application. |
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