What Are Cookies?
Cookies are text files with small pieces of data — like a username and password — that are used to identify your computer as you use a computer network. Specific cookies known as HTTP cookies are used to identify specific users and improve your web browsing experience.
Data stored in a cookie is created by the server upon your connection. This data is labeled with an ID unique to you and your computer.
When the cookie is exchanged between your computer and the network server, the server reads the ID and knows what information to specifically serve to you.
What Are Cookies Used For?
Websites use HTTP cookies to streamline your web experiences. Without cookies, you’d have to login again after you leave a site or rebuild your shopping cart if you accidentally close the page. Making cookies an important a part of the internet experience.
Based on this, you’ll want to understand why they’re worth keeping — and when they’re not.
Here’s how cookie are intended to be used:
Session management. For example, cookies let websites recognize users and recall their individual login information and preferences, such as sports news versus politics.
Personalization. Customized advertising is the main way cookies are used to personalize your sessions. You may view certain items or parts of a site, and cookies use this data to help build targeted ads that you might enjoy.
While this is mostly for your benefit, web developers get a lot out of this set-up as well.
Cookies are stored on your device locally to free up storage space on a website’s servers. In turn, websites can personalize while saving money on server maintenance and storage costs.
More info: https://en.wikipedia.org/wiki/HTTP_cookie
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