The difference between Session, cookie and cache

Sessions are single-user session state. When a user visits a Web site, a SessionID is generated. Coexist in cookies. Each time the request to the server, send this cookie, and then from the server to retrieve whether the SessionID saved data;

Cookies, like sessions, store your personal information, but are stored on the client, which is the computer you are using, and will not be discarded unless you delete the browser cookie, and the cache is the server-side caching that all users can access and share. Because reading data from the cache is faster, some systems (websites) put some frequently used data into the cache, improving access speed and optimizing system performance.

The difference between Session, cookie and cache