CLOUD

'Cloud Computing', a buzz words that is frequently pops out in modern day discussions with IT professionals. Being a buzz word, Cloud Computing has proven to be a confusion term with respective to most IT fields. So, rather than 'defining' Cloud Computing, its worthy to write about how it has evolved during last few years and then go for the conceptual things on Cloud Computing. Business App Nightmare Nowadays, every modern business has an Enterprise Business Application as its backbone. For instance, for a given company, it may require a Business App, to manages its human resources and to support its business process in efficient manner. Traditional Business Applications are too complex and too expensive. A traditional Business App often have most of these characteristics. Often required to have a dedicated datacentre and office space with power,cooling, bandwidth, network, servers and storage. Consists of a complicated software stack and required a team of exprets to ...

WSO2 announced the debut of WSO2 Stratos , the first 100% open source cloud platform for enterprise applications. WSO2 Stratos offers organizations of all sizes a fully hosted application platform-as-a-service (PaaS). Try it Out WSO2 Stratos Services Download - WSO2 Stratos WSO2 Cloud Connectors Using WSO2 Stratos, IT professionals can build and deploy applications and services with instant provisioning of enterprise servers, including the portal, enterprise service bus (ESB), and application server. WSO2 Stratos is built on top of and extends WSO2 Carbon—the award-winning, OSGi-compliant middleware. WSO2 enters the emerging market for enterprise PaaS. WSO2 Stratos provides IT organizations with three key benefits: Productivity: cut project time using the automated, integrated and highly scalable infrastructure of WSO2 Stratos. Cost reduction: optimize datacenter utilization and pay only for what is actually used. Control: govern all applications and services with built-in governance ...

Sri Lanka celebrates its 1st anniversary of the end of civil war that was lasted almost 3 decades. Now Sri Lankans enjoy the true taste of 'Peace and Harmony'. Despite of the fact that there are some more activities to be done to establish true democracy and economic stability, Sri Lanka can be easily rated as one of the best places to visit. In January 2010 New York Times rates Sri Lanka as No 1 of ' The 31 Places to Go in 2010 '. Retrospective Although Sri Lanka came across some political instability last year, people enjoys the new born freedom and many foreigns have visited Sri Lanka in 2010. Its obvious that country is more or less going in the correct direction and its the responsibility of the Sri Lankans to guide the government in the proper direction. It's a great feeling to live in a country that has just came across such a pathetic situation and now.. moving forward with a great confidence. There are no wonders why NY Times has rated Sri Lanka as the no...

The WSO2 ESB team is pleased to announce the release Open Source Enterprise Service Bus (ESB) 3.0.0 - Iridium. WSO2 ESB is a fast, lightweight and user friendly open source Enterprise Service Bus (ESB) distributed under the Apache Software License v2.0. WSO2 ESB allows system administrators and developers to easily configure message routing, intermediation, transformation, logging, task scheduling, fail over routing and load balancing. It also supports transport switching, eventing, rule based mediation and priority based mediation for advanced integration requirements. The ESB runtime is designed to be completely asynchronous, non-blocking and streaming based on the Apache Synapse mediation engine. WSO2 ESB 3.0.0 is developed on top of the revolutionary WSO2 Carbon platform (Middleware a' la carte), an OSGi based framework that provides seamless modularity to your SOA via componentization. This release also contains many new features and a range of optional components (add-ons) th...

In Object Oriented Design, the visitor patter is one of the obscure pattern yet powerful enough to solve many complex OO scenarios. Visitor Pattern is also not really easy to understand at the first glance but you need to dig it around with practical examples. (I guess it’s not just for Visitor pattern but also for all the other patterns) I would like to give a clean and simple introduction to visitor pattern with this post. So let’s start with a simple example ofthe usage of Visitor pattern. Visitor Pattern is often useful when there are fair numbers of related classes. One of the common examples of such a scenario is ‘drawing different shapes’. In this case we have a set of related classes; Circle, Trangle, Rectangle etc. Now, if we are going to implement a draw() function for all these classes i.e. circle::draw(), trangle::draw().. etc we may be drawing different shapes but we are replicating a fair amount of code in all the classes. (Because the underlying methods, that we use to d...

When dealing with multimedia devices Ubuntu becomes a nightmare as most of the devices does not offer you the Ubuntu compatibility. The story was the same for my Nikon Digital Camera transfer tools. I badly wanted to transfer images from my camera to my computer and found out that Ubuntu doesn't allow me to transfer the images. Finally gPhoto2 came to save me and it is a nice tool that allows you to transfer all your images from your cam to pc. This is what I did. Install gphoto2. (simply use the package manager) Unmount the device(camera) if mounted automatically. Open a terminal and go to the location that you want to store the images. Then do : gphoto2 --get-all-files For more information do : gphoto2 --usage That's all. By the way.. I know this is not a very user friendly way but after all as an Ubuntu user.. this is not an alien thing to use command line to transfer images :).

Missing iTunes on Ubuntu ? I have completely moved from Windows to Ubuntu 9.10 during last 3-4 months, and now I have alternatives for almost all the application I used to run on Windows. However, I'm missing iTunes so badly and couldn't find an attractive media player for Ubuntu till I came across Songbird . A few days back I downloaded their latest release( Songbird 1.4.3, Build 1438) and really feel happy about the user interface and the features. I feel like I'm using iTunes on Ubuntu.(apparently the Songbird plugin for iPod support seems broken so I have to user gtkpod for manage iPod on Ubuntu ) For those who are new to Songbird, it is a free and open source software audio player (and web browser too) which was founded by Rob Lord. Songbird utilizes the cross-platform frameworks, Mozilla's XULRunner and GStreamer media framework, and capable of running on Microsoft Windows, Mac OS X, and various Linux flavors(Ubuntu, Fedora). When we compare Songbird 1.4.3 with...