Jmeter advanced learning 2 (parameterization)

1. Question: Why is parameterization required?

During the test, parameterization is also a very important thing. For example, if the same ID is used multiple times during the system process, in case this ID changes, each file ID needs to be modified one by one. If parameterization is used, you only need to modify one file;

This can reduce the workload;

2. User-Defined variables are used here:

3. How do I call a defined variable?

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To be continued ....