The essence of SessionID

SessionID: Each visitor server assigns an ID to you (is automatically assigned by the server) each SessionID is unique to everyone id,session there is nothing mysterious or strange place, its essence is the server side of the data stored to distinguish each user, This data has a unique ID that the ID server will tell the client through a set cookie. Then the client requests the time to take this ID, and the server session can be associated with the client. Each time a new browser is opened to request a page, the server will think that this is a new request, he assigns you a new SessionID.

The essence of SessionID