eBook > The JMeter Playbook: Build, Scale, and Optimize Performance Tests
Regular Expression & Other Extractors
In JMeter and other load testing tools terms correlation is the process of capturing a dynamic value from the server response and using it in a subsequent request. Common examples include:
- Session IDs and CSRF tokens
- OAuth access tokens
- Resource IDs returned after creating a record
JMeter provides several Post-Processors (mainly “Extractors”) for this purpose.
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