I am happy to announce that the first milestone release (1.0.0.M1) for Spring for Apache Hadoop project is available and talk about some of the work we have been doing over the last few months. Part of the Spring Data umbrella, Spring for Apache Hadoop provides support for developing applications based on Apache Hadoop technologies Read more…

One of the drivers behind the popularity of NoSQL solutions is performance (especially) under heavy loads. Due to their data model, key value stores lead the pack, providing lightweight yet flexible means of working with data. In this entry, I am going to quickly showcase what it takes to work with a key value store Read more…

One of the major features added in Spring Framework 3.1 M1 is the generic cache abstraction for transparently applying caching to Spring applications. Just like the transaction support, the caching abstraction allows consistent use of various caching solutions with minimal impact on the code. Purpose Caches are in general used to improve application performance by Read more…

I am happy to announce the first milestone release of the Spring GemFire project, the newest member in the Spring family. Spring GemFire (for short SGF) brings the Spring concepts and programming model to GemFire, SpringSource's distributed data management platform. The release is available for both Java and .NET. The features in 1.0.0.M1 include: declarative Read more…

Hot on the heels of the STS on Eclipse 3.6 and Gemini Web milestone announcements, I am glad to report that the first milestone of Gemini Blueprint is available for download. Part of the Gemini project, Blueprint builds on top of the Spring Dynamic Modules v2 code base and is the Reference Implementation for the Read more…

Last month, almost 4 years after the initial 4.0 release, OSGi Alliance officially approved the OSGi service platform 4.2 release. The announcement headline featured the Blueprint Container Service, a new addition to the Compendium specification based on the programming model promoted by the Spring Dynamic Modules (also known as Spring OSGi) project. To quickly summarize Read more…

A fairly common question that I get from time to time is how to go about using JDK specific classes inside an OSGi environment. To some degree, this is equivalent to getting access to the bootstrapping classpath from OSGi, without bundling it. To express package dependencies, bundles use the OSGi directive inside their manifests – Read more…

Since the first milestones of Spring Dynamic Modules, requests for running web applications in OSGi started to come in. It has been probably one of the most requested features and no wonder, once 1.0 final was released, web support has been the main focus of the 1.1 branch. I am pleased to report that, with Read more…

When approaching OSGi, one of the first concepts that have to be learned is the notion of a bundle. In this entry, I'd like to take a closer look of what a bundle actually is and how a vanilla jar can be transformed into an OSGi bundle.  So, without further ado, What is a bundle? Read more…

I am glad to report (along side Adrian) that after 3 milestones and 2 release candidates, Spring Dynamic Modules (formerly known as Spring OSGi) 1.0 has been released. A lot of features have been improved or added since my previous post (about 1.0 M1); I'll talk more about them in future entries (there is also Read more…