White box testing, also known as clear box testing or structural testing, is a method where the tester has knowledge of the internal workings, structure, and implementation of the software being tested. This allows testers to design test cases that directly target specific paths, code blocks, or internal structures within the software. For example, a developer might use white box testing to ensure that every branch in a decision tree within their code has been executed at least once.
On the other hand, performance testing is a type of testing that evaluates the speed, responsiveness, stability, scalability, and resource usage of a software application under a particular workload. The goal is to determine how well the application performs under various conditions and to identify any bottlenecks or issues that could affect user experience. For instance, a company might conduct performance testing to ensure their e-commerce site can handle a surge in traffic during a sale without crashing.
In summary, white box testing focuses on the internal structure and logic of the software, while performance testing evaluates the software's behavior and efficiency under load. For cloud-based applications, services like Tencent Cloud offer robust solutions for hosting and scaling applications, which can be crucial for conducting effective performance testing in a real-world environment.