CareCloud, the co-winner of the IBM Global Entrepreneur Silicon Valley SmartCamp competition in 2010, is a company that modernizes the workflow in a medical practice to put physicians in touch with each other across multiple points of care, through a Cloud Computing technology-based solution. "We feel our solution helps revolutionize the way physicians collaborate and share critical healthcare information," said Albert Santalo, president and chief executive officer, CareCloud.

Ruby on Rails, a popular Web development framework based on the Ruby programming language, makes it easy to access your database, but it does not always do so efficiently. Learn more about common performance problems with Rails, including N+1 query, and discover how you can fix them.

Many of your Android apps will need to interact with Internet data, which comes in a variety of formats. In this article, build an Android app that works with popular data formats — XML and JavaScript Object Notation (JSON, as well as the more exotic protocol buffers format from Google. You'll learn about the performance and coding trade-offs associated with each format.

Because of HTML5's momentum, it is now a technology that every XML developer has to deal with. Fortunately HTML5 supports a proper XML serialization. Learn about the XML form of HTML5 including some key differences from older XHTML conventions and learn how to practically apply this vocabulary in modern web browsers.

This happens lot of times. I login as a normal user and start to edit httpd.conf or lighttpd.conf or named.conf in vim / vi text editor. However, I'm not able to save changes due to permission issue (all config files are owned by root). How do I save file without creating a temporary file (/tmp/httpd.conf) and then move the same (mv /tmp/httpd.conf /etc/httpd) as root using vim / vi itself?

HowTo: Save A File In Vim / Vi Without Root Permission