Cookies are fundamental aspects of a web application that end users and developers frequently deal with. A cookie is a small piece of data that is stored in a user’s browser. The data element is used as a medium to communicate information between the web browser and the application’s server-side layer.
Cookies serve various purposes, such as remembering a user’s credentials (not recommended), targeting advertisements (tracking cookies), or helping to maintain a user’s authentication status in a web application. Several fantastic articles on the internet have been written over the years on cookies.
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