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Expected Delay when Switching to New Version of Application Using Parallel Deployment (Tomcat 7.0.27)

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For a simple web application, what is the expected delay when switching to new version of an application when using the parallel deployment process? I'm trying to do timings right now with a single Hello World JSP and sometimes there is a delay of up to 4 seconds when the new version of the application is deployed (running 5 users simultaneously using Jmeter with cookies turned off), but other times I don't see this behavior. Does anyone know if it is expected for there to be a slight hiccup in response times when the applications are deployed via parallel deployment? I understand that many applications will have initialization logic and that may cause a delay, but I'm wondering if I should expect tomcat to introduce a very small delay when switching from the old version to the new version and if so, how long should I expect that process to take.

posted Jul 5, 2013 by anonymous

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