Cookies

Name / Value pair

Creates a cookie, a small amount of information sent by a servlet to a Web browser, saved by the browser, and later sent back to the server. A cookie's value can uniquely identify a client, so cookies are commonly used for session management.

The browser is expected to support 20 cookies for each Web server, 300 cookies total, and may limit cookie size to 4 KB each.

Reference:

https://tomcat.apache.org/tomcat-5.5-doc/servletapi/javax/servlet/http/Cookie.html