Block storage is a key foundation to most file systems. File sharing and file locking are important processes for sharing cloud data resources, and for eliminating race conditions. Efficient implementation can make a significant mark on your system's and applications' performance levels. In this article, we use an open source example -- cloud platform Eucalyptus and its storage component Walrus -- to demonstrate how to modify block storage to improve the file-sharing and -locking mechanisms. Learn how to install Eucalyptus so you can deliver a top-notch Infrastructure-as-a-Service platform.



Open source - Filesharing - Cloud computing - File system - Infrastructure as a service

Packt Publishing, in celebration of 5 years of continuous business, is giving away some eBooks to all recipients.



E-book - Publishing - Packt - Business - Publishing and Printing

Defne is a service oriented web application framework. The main motivation behind Defne is ease of use. Defne allows developers to concentrate on their business logic while it provides all other application requirements such as transaction and security. With Defne, you are able to implement powerful enterprise web application's business services easily.



Business - Service-oriented architecture - Programming - Web application framework - Business logic

Learn how to use Spring in order to quickly send e-mails. An example of JavaMail configuration for use with GMail's SMTP server is also provided.



GMail - Simple Mail Transfer Protocol - JavaMail - Java - Email

Measurement is the most central concept in any performance-related activity. If you are not measuring you are blind. As important as measuring per se is collecting the right measurements. Which metrics are the right ones depends on what you want to do. However there are some general principles which – when followed – can make your life much easier. Read how to work with response times and make performance analysis easier.



Measurement - Performance measurement - Business - Data Warehousing - Databases

JOSSO 1.8.2 mainly introduces transparent inbound and outbound SAML2 interoperability for seamless standard-based Federated SSO experience, includes out-of-the-box support for mainstream Portals and CMS systems, can build on multiple disparate authoritative sources of user information for carrying out authentication and plays nice with any JASPI-compatible (JSR196) application servers such as JBoss 5 and GlassFish.



Open source - GlassFish - Single sign-on - JBoss SSO - Content management system

Day Software is the ECM pioneer that leading global enterprises rely on for their Web 2.0 content application and content infrastructure needs. Day's Content Repository Extreme (CRX) is the industry's leading Java Content Repository (JCR) that provides unique virtualization services to consolidate legacy repositories and unique cloud computing services to lower IT operational costs.



Day Software - Web 2.0 - Content repository API for Java - Cloud computing - Enterprise content management

Oracle has extended its SOA Suite with the Oracle Service Bus 11g. Some of the specific enhancements include service results caching, automated lifecycle service governance, and cloud integration. Read More: Oracle ships ESB http://searchsoa.techtarget.com/news/article/0,289142,sid26_gci1516939,00.html?track=NL-110&ad=777112&asrc=EM_NLN_12111034&uid=9814376



Oracle Corporation - Oracle - Databases - Service-oriented architecture - Enterprise service bus

Create a jQuery, PHP XMPP and get Real-Time web updates from your favorite websites



PHP - Programming - JQuery - Languages - FAQs Help and Tutorials

This article aims to explore whether servlet containers and the java servlet api is always the right answer for development of all HTTP servers. It tries to explore if there are scenarios where there may be alternatives to make simple, yet robust and extremely scalable HTTP engines by going under the hood.



Java Servlet - Java - Programming - Languages - Hypertext Transfer Protocol

ItsNat v1.0 is the result of several years of investigation, development and refinement to provide a flexible, simple and powerful tool for development of web applications and sites intensive on AJAX. This release leverages even more this flexibility and power with features like Extreme Mashups, Full Remote Control and Remote Templates.



Ajax - Web application - JavaScript - Programming - Languages

During a recent webinar, Charlie Weiblen from IntraLinks took the chance to show a live demo on how they manage their SaaS in their private cloud.



Software as a service - Business - Cloud computing - E-Commerce - Business-to-Business

Learn how to find reusable chunks of code found in every piece of software



Design - Architecture - Arts - Programming - Education

One of the common Java idioms is subject to a data race when used in a multi-threaded environment.



Java - Programming - Languages - Threads - FAQs Help and Tutorials

Continuing our series of articles concerning proposed practices while working with the Java programming language, we are going to discuss and demonstrate how to utilize Object Serialization for high performance applications.



Java - Programming - Languages - FAQs Help and Tutorials - Best practice

Burst computing (or fan out) is one great use case for Cloud. To get there, forget the way you used to code in the enterprise era. Forget the number of servers in your data center. Thats not the constraint anymore. This is web scale! And you better learn parallelism. When you learn parallelism - remember that the user is the king - respond to them in seconds. Thats your new constraint!



Data center - Parallel computing - Computing - Business - Programming

The new powerful, flexible and extendible yet simple framework that abstract fixed length and delimited file processing from business logic



Open source - Object-relational mapping - Programming - Languages - PHP

Sometimes it's worth the time to just step back a little, and get familiar with the basics once again.



Ajax - JavaScript - Java - Programming - Languages

The Sonar Team is pleased to announce the release of Sonar 2.2. There are three key features in this new version : Filters, Favorites and Plugins classloaders.



Sonar - Business - Underwater Services - Transportation and Logistics - Services

JavaScript Performance can be very different between different versions of IE. I came across a page that takes 6s in IE8 and 13s in IE7. I identified the problem using the Compatibility View feature in IE8 and nailed it down to long running jQuery Lookup methods that perform really bad in



JavaScript - JQuery - Programming - Languages - Website