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I've always been leery of RAID on the desktop. But on the server, RAID is a definite must: "RAID" is now used as an umbrella term for computer data storage schemes that can divide and replicate data among multiple hard disk drives. The different schemes/architectures are named by the word RAID followed by a number, as in RAID 0, RAID 1, etc. RAID's various designs all involve two key design goals: increased data reliability or increased input/output performance. When multiple physical disks are set up to use RAID technology, they are said to be in a RAID array. This array distributes data across multiple disks, but the array is seen by the computer user and operating system as one single disk. I hadn't worked much at all with RAID, as I felt the benefits did not outweigh the risks on the desktop machines I usually build. But the rules are different in the datacenter; the servers I built for Stack Overflow all use various forms of RAID, from RAID 1 to RAID 6 to RAID 10. While working... - Manikanda kumar

One of the things we hear a lot working with the community is a desire for more guidance about how to use the technology instead of just talking about features and functions. To address this need the Architecture Council team has put together a series of live webcasts on June 9th – 11th which will focus on moving to the cloud, rich internet applications and parallel computing. - Manikanda kumar

Earlier installments in this series discuss how unit testing leads you to a better design. But if you already have lots of code, how do you discover design elements lurking within it? The preceding installment talked about building structural targets for your code. In this article, series author Neal Ford expands on those ideas and covers techniques that use refactoring to allow emergent design. - Manikanda kumar

Windows: Service Pack 2 is officially available for download, bringing better Wi-Fi and BlueTooth connectivity, processor compatibility, native Blu-Ray support, and faster search to Windows Vista. Just as with the release candidate, installing SP2 technically requires having SP1 installed. Knowing that a few of our readers held off on that update, that makes SP2 kind of a pain for those cautious users, and Microsoft notes that the only solution for a missing or incomplete SP1—or, in some cases, stripped-down installations made with vLite or other custom disk makers—is a lengthy re-install. Still, for those waiting on even more fixes for Windows Vista, SP2 should be a welcome download. You should see it through Windows Update around June 30, but you can download and install it directly from the links below, as well as check out the official list of changes. Tell us how you're liking SP2, in performance and features, in the comments. Notable Changes in Windows Server 2008 SP2 and... - Manikanda kumar

In this tutorial, you will learn how to use the main features provided by the Wizard classes of the NetBeans Dialogs API. - Manikanda kumar

In our busy geek lives it seems we can never get enough reminders for all the tasks for the day. Doomi is a free easy to use To-Do application that doesn't include a bunch of needless extra features. Using Doomi Doomi runs with Adobe Air will install the application and Air together. This is a great to-do list because it does exactly what it is designed for an there is no extra bloat. Simply type in what you have to do for the day and a list is generated. After typing in the task click the clock icon to select the hours in the future it is due or you can even create a custom time to be more precise. When it is time to be reminded about a task a friendly message box pops up. When you have completed the task just click the box next to it on the left side and it will be moved to the old tasks list. If you want a simple and easy way to keep track of your daily tasks, Doomi is a great option to consider. Download Doomi for Windows Similar Articles Featured Wiki Articles Installing Fluxbox... - Manikanda kumar

Bookmark this on Delicious - Saved by PStamatiou to firefox toread todo twitchboard web JS tutorial dev - More about this bookmark - Manikanda kumar

Last week I blogged about the use of the Service Facade and Data Transfer Object pattern in JPA application architecture. This week I will move from the high level perspective and discuss an interesting interaction I discovered between the way bidirectional associations are managed and lazy loading. So let's roll up our sleeves and get dirty. This blog assumes that you are familiar with the Order/OrderLine example I introduced in the first two blogs of this series. If you are not, please review the example. Consider the following code: OrderLine orderLineToRemove = orderLineDao.findById(30); orderLineToRemove.setOrder(null); The intention of this code is to unassociate the OrderLine with the Order it was previously associated with. You might imagine doing this prior to removing the OrderLine object (although you can also use the @PreRemove annotation to have this done automatically) or when you want to attach the OrderLine to a different Order entity. If you run this code you will... - Manikanda kumar

Learn to design Privileged API suitable for power users of your library. Don't forget to listen to podcast #3. --JaroslavTulach 17:01, 25 May 2009 (UTC) - Manikanda kumar

Dan Hanley, of Magus, discusses design principles, architectures and infrastructure of the SaaS frameworks used by Magus to rapidly develop and deploy large-scale, web-based, applications for clients. Along the way he discusses the components of their technology stack and the evolution of their methodology. By Dave West - Manikanda kumar

We each have many distractions that keep us from getting things done. I noticed a few prominent distractions in my life this week (Twitter and Digg are taking over!) and I felt that it was time to address the problem! I know that I am capable of getting things done and achieving things but I’ve noticed that distractions can get the better of me. When I’ve planned to research a topic for a new article, sometimes I “wake up” and realise that I’ve been browsing Digg for the past 30 minutes. Not only does this cut down the time I have in a day, but more than anything it hinders my ability to concentrate on the task. I see concentration as being split into three different levels. The first level is acknowledging that I have work to do. I can sit down and make a start, but I’m vulnerable to distractions and they can easily get the better of me. At this stage it sometimes feels like I’m looking for an excuse not to work. My mind can easily wander onto other things, and I often think about... - Manikanda kumar

In this presentation recorded at QCon SF 2008, Jeremy D. Miller shares lessons learned while developing a project over 5 years. He talks about his mistakes, what to avoid and how to design, code and test better. By Abel Avram - Manikanda kumar

Satyen Desai, senior YUI engineer, discusses YUI’s next-generation codeline, YUI 3. Presentation transcript - Manikanda kumar

Today I've been looking for a nice UML class diagram of java 1.6 collections, but I didn't like those I've found And as I had some free time, I've decided to create my own and share them with you: Sets: Lists (yes I know, there was no need to put Vector in there, but let say that I am a little bit nostalgic :D ): Maps (the same as for Vector goes for Hashtable): Queues: - Manikanda kumar

The Merapi project recently was open sourced. Merapi is a technology that can be used as a messaging bridge between applications that run in the Adobe Flash player or Adobe AIR and applications written in Java. By Scott Delap - Manikanda kumar