December 16, 2008 – OSGi


OSGi is a Java-based component architecture that has gained a lot of traction recently. It is simple, provides dynamic updates of components and supports working with different versions of the same JAR or component. OSGi is used to build complex applications like Eclipse, application servers (GlassFish, IBM Websphere, OpenEJB, Oracle/BEA Weblogic, Jonas, JBoss), application frameworks (Spring, Guice), and more. We will discuss the following topics:

• The basic OSGi architecture (bundles, manifests and services)
• OSGi Implementations (Equinox, Felix, Knopflerfish)
• Concrete Uses of OSGi (Eclipse, …)
• Developing OSGi Bundles (Eclipse PDE, Maven, PAX-tools, …)
• OSGi Examples


Felix Mayer is a German national living in Atlanta since 1996. He has been working with Java/J2EE for over 10 years and with relational databases for over 15 years, mostly in the mobile telecom area. He is currently with ERDAS, working on an enterprise GIS (Geospatial Information System). He is author of the ObjectAid UML Designer ([http://www.objectaid.com]), a free easy-to-use Eclipse plug-in to create UML class diagrams from existing code.

Tagged with:
Posted in Meetings, Uncategorized
AJUG Meetup

Building and Deploying 12 Factor Apps in Scala and Java

April 18, 2017

The twelve-factor app is a modern methodology for building software-as-a-service apps:

• Use declarative formats for setup automation, to minimise time and cost for new developers joining the project.

• Have a clean contract with the underlying operating system, offering maximum portability between execution environments.

• Are suitable for deployment on modern cloud platforms, obviating the need for servers and systems administration.

• Minimise divergence between development and production, enabling continuous deployment for maximum agility.

• And can scale up without significant changes to tooling, architecture, or development practices.

We will build a RESTful web service in Java and deploy the app to CloudFoundry. We will go over how to build a cloud manifest, how to keep our database credentials and application configuration outside of our code by using user-provided services and go over what it takes to build a 12 Factor application in the cloud. This presentation will be heavy on code and light on slides!


Roam Dunwoody

1155 Mount Vernon Highway NE
Atlanta, GA 30338 (map)

AJUG Tweets

Follow @atlantajug on twitter.

Recent Jobs