“Add -> PostProcessor” components like the “ Regular Expression Extractor”). Extracting dynamic data from a key request and assigning it to variable (e.g.
#NEOLOAD CORRELATION MANUAL#
Manual correlation means that the developer manually discovers correlation points in the test flow and maps the values to be replaced in consecutive requests.Ĭorrelation in Apache JMeter™ is handled in two steps: In any other case, this is quite surely a correlation activity. User Navigationĭuring user navigation, the application assigns a specific condition to a cookie that alters the successive navigation steps - this one is tricky! If the information handled in the cookie is read from the cookie cache, you can handle the cookie (as already seen) with the “HTTP Cookie Manager” and not correlate.
This situation quite surely involves correlation, so it's necessary to investigate which application logic should be replicated, with correlation, in the successive requests. This id is used by the application to handle the user’s interaction. When a user lands on a web application, the server assigns her/him a session id. In terms of data, this actually is a correlation, but JMeter already has a component that can handle this kind, so we don’t need to correlate ourselves. CookiesĪfter user authentication, the created session cookie must be… - No correlation step is necessary here because this step has authentication cookies, which can be handled with JMeter’s “HTTP Cookie Manager” component. Correlation is definitely involved in this step because the “creation” action involves dynamic content that must be handled (eg. The test requires that after creating a post on a blog, the user can perform one of many different actions. When the specification is for static text in the response, there is no need for correlation, because the requirement focuses on the invariance of the content response. The test requires evaluating the response time of static content with a specific network condition (e.g. To better clarify this point, here are some examples: 1. In other cases, you can’t avoid correlation handling at some point of the test. You can ignore correlation only if you are testing static content pages, like some homepages and contacts. Typically every HTTP web performance test involves data correlation. If it isn't handled correctly, the script is useless.įrom a testing point of view, it is necessary to identify which response is dynamic and which is static (the data stays the same for iterating requests). That's because dynamic sites require correlation during performance load test scripting. In JMeter, correlation is very important.
#NEOLOAD CORRELATION HOW TO#
In this blog, you'll get a complete overview of correlation in JMeter - and learn how to make it faster.Ĭorrelation in JMeter is the process of capturing and storing the dynamic response from the server and passing it on to subsequent requests. JMeter correlation is an important process, especially in load testing.
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