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  1. #1
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    Cookie Issue with Shared Cache Pool

    We are currently using a lesser known tool called eValid for our load testing of a web app. This tool uses a separate browser per user instead of a virtual user. One big problem that we ran into is that eValid uses a shared cache pool to handle cookies. This means that for a transaction to succeed, it will need to keep the cookie all the way until the transaction is completed. In this case after step 1 in our load test, eValid will try to grab a cookie from this shared cache pool that could have originated from another browser user and this is causing our app to error out. We have ruled out this problem being a load balancer issue.

    This seems like an odd design for a load test tool since a lot of apps will use cookies in this manner. Are there other load test tools that run into this same issue? If so, how would one work around this issue? If there is no workaround, we may have to pony up for a tool like LoadRunner.

  2. #2
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    Re: Cookie Issue with Shared Cache Pool

    > This tool uses a separate browser
    > per user instead of a virtual user.

    /facepalm
    Corey Goldberg
    Homepage: goldb.org
    Twitter: twitter.com/cgoldberg
    Google+: gplus.to/cgoldberg

  3. #3
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    Re: Cookie Issue with Shared Cache Pool

    Shared cookies!?! This flies in the face of the concept of multiple user performance testing with distinct sessions. Are you sure that there isn't a way to set it up to use individual cookies? I would be sure to run this by the vendor... or ask for my money back.
    A problem is a difference between what is perceived and what is desired, that
    we want to reduce
    (Dewey 1933)

  4. #4
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    Re: Cookie Issue with Shared Cache Pool

    We verified with the vendor that they do indeed use a shared cache pool. They are asking us to now make changes to our load test environment to hopefully get this to work. I have a feeling it may be difficult to ask for our money back at this point.

  5. #5
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    Re: Cookie Issue with Shared Cache Pool

    I remember using a non-standard web-testing tool a LONG time ago which used a kind of shared cache, but you could configure the path to the cache for each vuser, e.g. c:/cache/<VUID>. Sounds strange that a multi-user test tool cannot support individual session cache... Defeats the purpose somewhat. HTH

 

 

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