What Is Cookie?

What Is Cookie?

To perform manual testing or automated testing of web software products, a specialist should be aware of all specific features of modern web technologies and should monitor new modernizations and innovations appeared in the web field.

Nowadays, the majority of web sites and web applications use cookies. Probably, everyone hears something about cookies but not everyone knows their exact purpose of use. The specialists of usability testing, compatibility testing or localization testing know the peculiarities of cookies very well.

In general, cookies are text files saved on user’s computer. Such files are created by web applications which user interacts with. Cookies contain data which help to identify the user. With cookies help the continuation of previous work with the application is available for user.

Cookies are used by web servers and browsers. They help to direct a user to required web page and to display appropriate data. It is possible due to a special code embedded in HTML page. In such a way, every time when a user visits particular web site that utilizes cookies, this code activates and creates cookies on user’s device.

Moreover, a special code can also edit cookies on user’s device. For all these options being available, web servers need special protocols – HTTP. There are two types of such protocols.

What Are HTTP Types?

  • Stateless. Such HTTP do not track and document user’s story.
  • Stateful. Such protocols track and record history of data exchange between web server and browser.

Sometimes, these technical aspects are reviewed before the execution of functional testing, performance testing and security testing.


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