Author Archives: Ivan Lisitsyn

Extracting values from server responses

In this post I will continue using the profile mentioned here as an example. It contains a user session recorded at the following web forum: http://www.loadtest…

The session is very simple: the user opens the main forum page, enters into a sub-forum by clicking a link on that page and then clicks another link to display a topic. I made a small modification to that profile: I removed requests to iframes, because they are static and do not play any role in the session. So, the whole session now consists of 3 requests […] Continue reading

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Verifying a test before run

Designing a test for a web site with essentially dynamic content may be a rather complex and time consuming task. It is similar to programming in some respect. Even though there are good testing tools that let you automate the … Continue reading

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Using variables for parameterization

In the previous post I wrote about web forms containing hidden controls. The purpose of these controls is to pass some data from the server to the client and then receive it back in the next request (along with the … Continue reading

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Hidden controls in HTML forms

I would like to continue writing about the methods used to pass various data between the client and server part of a web application. In the previous post I briefly described the cookies mechanism used to join the successive requests … Continue reading

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Cookies and user sessions

We all know that a web site can have a complex distributed structure with load balancers and database servers. However from the outside view any web site is just a computer program that is always waiting from an HTTP connection. … Continue reading

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On parameterization

To create a load test we record a typical user session with help of a browser and a load testing tool. We want to use that session as a template to emulate hundreds or even thousands users working with our … Continue reading

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What is an HTTP request?

I will not write about HTTP protocol in general. I want to concentrate on few facts about HTTP requests that are important for load testing. As I mentioned in the previous post, when we work with a web site using … Continue reading

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How a user session is recorded and replayed

As I wrote before, to load test a web site you need to record a sequence of actions that constitute a single user session on the site. Then when you run the test, this session it repeated by many virtual … Continue reading

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How to create a test?

Let’s imagine that you have a web site and you want to create a load test for it. Of course, the first problem is to choose a load testing tool. I will not write a lot about this step and … Continue reading

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