Session Management in J2EE

Web applications are following HTTP protocol for communication where it instructs how to transport Hyper Text content over a TCP/IP based network environment. HTTP is known as a state-less protocol where the protocol will NOT provide any functionality to keep track of the messages communicated between client and server over the network. Server will need…

Linux environment virtual memory

In operating systems virtual memory adds an extension to the random access memory of the computing device. This post will explain how to add a virtual memory (swap area) for a Linux based operating system. Virtual memory (swap) space of a Linux environment could be added using an image file which is created on any…

Create a ftp user in Linux

In order to enable communication of large files over File Transfer Protocol (FTP), a user is required to be created on the operating system mounted to a specific root within the operating system. The following explains how to create a FTP user within Linux environment. 1. login on to the shell as root > su…