COMET

A whole new world awaiting to be explored!

A set of new technologies that

are non-conventional , bring about a revolutionary change in WEB architecture.

One of them being the server PUSH to a browser,

without any request. Thus, the common WEB scenario of REQUEST(client)->RESPONSE(server) gets extended

to take the form

WITHOUT-REQUEST(client)<-PUSH(server) .

More precisely, there’s a new term coined

for the same , that is COMET.

Hosting POP3/SMTP service

All you need to host a POP3/SMTP service for personal use

is :

• Get a UBUNTU Live or UBUNTU setup installed on your PC.

• Install packages Dovecot,Postfix,Webmin.

• Set the firewall rules to open POP3 port (110) and SMTP port (25).

• If you want to do away with all rules just use the command iptables -F

• Get a No-IP account and get the domain for example, migandhi.no-ip.org

• Add an MX record for your domain after logging to your No-Ip account ,so your mail reaches the inbox

• Dowload the DUC .deb package, and make sure your router or firewall does’nt block the DUC

• Lastly you will also need an account and password for ‘root’ to login through webmin.

• To set the password use the following command

• sudo /usr/share/webmin/changepass.pl /etc/webmin root [password]

• Login through https://localhost:10000 using the newly created root password

• You can have your own mail id for example, murtaza@migandhi.no-ip.org by simply creating a new user from the System Users node in the Webmin interface.
• All mails addressed to this id would be configurable either by email client like evolution , thunderbird or OutlookExpress for windows
  
• And you may also send/receive mails using Webmin from the servers node for Dovecot
  

Clone Your Harddrive

Ever wondered about saving your most important configured OS with all the settings in place,

in a backup drive as an image?

Clonezilla is a helpful tool to do so.

For advanced used , Clonezilla Server is available for backing up multiple

machines simultaneously .

Clonezilla is available as a Live Disk bootable system.

Hypervisor

Hypervisor is a layer that allows loading of different Operating Systems executing independently of each other.

It requires a host OS loaded.

One free implementation of the hypervisor is VirtualBox.

So no wonder now that you would have

multiple OS running simultaneously on a single Computer , changing between these would be merely a matter of using keyboard hot-key ‘Alt-Tab’ or some other

user defined keyboard or mouse  combination.

Another example of Virtual Machine Monitor can be found at :

Microsoft Virtual Server

SuperComputer

A low cost super computer would be called a ‘cluster’ in modern language.

MPI

is one kind of interface for message passing that helps develop a network of

computers

with the capability of processing hundreds of gigaflops.

That would result in having a powerful computing system.

For DOTNET programmers who are really curious about applying this architecture should refer to:

http://www.osl.iu.edu/research/mpi.net/

FactoryPatterns

Programming with factory patterns does wonders to the
modelling of a software.
It aids in moulding out a perfect product.
DotnetFactoryPatterns

3D Search

You may kick-off with this one for the new age search, with 3D visualization of results.

www.spacetime.com

DeadLocks

Sockets

AjaxPro

Various methods for using Ajax exist.

1. XMLHttpRequest

2. The AJAX TOOL-KIT for ASP.Net

3. And the newer way of employing AJAX is the AJAXPRO library by Michael Schwarz .
   

http://www.ajaxpro.info/