cookies are sent with every request to the server, which means that we have to keep our cookies small to maintain a decent request size.
From <https://css-tricks.com/a-primer-on-the-different-types-of-browser-storage/>
The cookies are concatenated into one semicolon-separated string, and they are sent in the cookie header of the request.
From <https://css-tricks.com/a-primer-on-the-different-types-of-browser-storage/>