Implementation of the session manager for a stateful server

Advances of mobile communication technologies and device technologies brought the mobile computing era where people use multiple information devices such as a PDA, a cellular telephone and a handheld PC to connect with various Internet services. Very often. the client device needs to exchange multiple packages or messages with a server in the course of service access which is called a session. There are several ways for a server to keep certain information that is required to be maintained during a session. This study proposes and implements three of these mechanisms for a stateful server. We carry out the performance measurement from the implementations and compare each mechanism.