Esri is a leading provider of Geographic Information Systems (GIS) software and geo-database management applications. Their powerful mapping solutions have been used by Governments, industry, academics, and NGOs for nearly 30 years (read their history to learn more). Over the...

Of course the sessions at SpringOne 2GX 2011 covered Spring, Groovy and Grails in amazing detail, but cloud workloads were hot topics of discussion last year as well. In this presentation, pioneering technologist Derek Collison gives a detailed breakdown of Cloud Foundry - Inside the Machine. Derek gives a deep analysis of Cloud Foundry's architecture with specific details on the Cloud Controller, the Service Provisioning Agent, the Droplet Execution Agent, and the Messaging System. If you want to learn about the technology behind the world's first open platform-as-a-service then this presentation is for you. Many thanks to InfoQ for coming to Chicago to record so many of the fantastic SpringOne 2GX presentations.

Behind every 'Down for Maintenance' sign is frustrated operations staff, sleep-deprived developers, and angry managers letting everyone know how much money the company is losing with every minute of downtime. It is an awful experience for everyone involved.

The DHTMLX Sprink Link is an Open Source class library that implements the docklet concept using Spring Framework and DHTMLX Widget Javascript component framework. The concept of the docklet, is a flexible approach where user interface widgets can have multiple behaviors depending on the client browser technology (personal computer, smartphone, tablet, etc.), based on security context and run time parameters. The scope of the project is to create a common, community driven, open source class, giving the opportunity to create cutting edge applications running in the cloud and making them available on both personal computers and mobile devices.

Dave Farley and Martin Thompson discuss solutions for doing low-latency high throughput transactions based on the Disruptor concurrency pattern. By Dave Farley and Martin Thompson

Dear Spring Community, We are happy to announce that the first release candidate of Spring Social LinkedIn is now available! Thanks to community contributions, the Spring Social LinkedIn project now has a complete API binding in addition to connection support through Spring Social's service provider connection framework. To get Spring Social LinkedIn, download the release distribution or simply add the Maven artifacts to your project. As we push toward a GA release, we would like to hear what you think of the RC1 release. Give feedback in the forum or, if you have any suggestions or find any bugs, please post them in the issue tracker.

With the recent advances in cloud computing and Amazon Web Services infrastructure, many companies are trying to abandon their IT shops and move their software to the cloud. In his new blog post, Charlie Oppenheimer discusses the economics of cloud computing, comparing it with traditional data centers. By Boris Lublinsky

Entity Framework 4.3 release finally brings the Migrations feature to Developers, without having to depend on separate pre-release binaries. By Roopesh Shenoy

Master web application complexity with the functional scripting superstack of CoffeeScript, Node, and Underscore.js.

My last few blogs have talked about Spring's @ExceptionHandler annotation and how you can use it to deal with errors on a controller by controller basis to give you fine-grained control over how you handle errors in your code. The question to consider now is whether or not you always want such fine grained control, to which I'm guessing that in certain circumstances the answer will be...

Not sure how long ago I started using OSGi. Perhaps it was 12 months ago or then perhaps 18. And yet I still find it painful using OSGi especially every time I bring in a foreign set of jars into the ecosystem. And yet I continue to be a dogged proponent. Here's why. Preview Text: Not sure how long ago I started using OSGi. Perhaps it was 12...

Nexus Professional 2.0 supports NuGet repositories, and while you'll hear much more about that next week I think it's important to introduce what NuGet is before we introduce you to how Nexus supports it. NuGet and NuGet Gallery is a relative newly way for .NET developers and .NET open source projects to distribute binaries. Nexus provides first-class support for proxying, hosting,...

Preview Text: The most common approach to doing Java is with an ORM connecting to a relational database. So who is responsible for data integrity in this scenario? The database has a constraint language. I have almost NEVER seen anyone who used it even slightly, let alone completely. For instance, if you define a...

Today developers are using JSTL to write clean jsp code. Let's talk about JSTL's url tag <c:url ...> .People are complaining that whenever they using <c:url ... > all links on their site contain strange a jsessionid parameter and it disappears after refreshing the page. Some of them think that this is a bug. Preview Text: People are...