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London Spring User Group:The nuts, bolts and Springs of distributed OSGi applications.

The nuts, bolts and Springs of distributed OSGi applications.
Using Spring with OSGi is a revolution in the application server environment. Spring gives you flexibility, OSGi gives you dynamicity, but complexity can give you a headache! This talk, led by Dave Savage, will review the current technology landscape, explore how you can turn a standalone app in to a resilient, distributed system while taming the complexity and highlight the benefits and gotchas that you should consider when moving to this style of architecture.

Review:
Dave launches into his talk with a brief introduction to The Open Services Gateway Initiative (OSGi), which defines an architecture for modular application development. Features like versioning and dynamically updating code at runtime are made possible with its unique class-loading mechanism. OSGi is also an SOA Architecture. An OSGi service is a Java Object Instance in an OSGi framework. Dave informs us that the new OSGi 4.2 specification will include features like transaction support and distributed OSGi for making services of a JVM visible to other JVMs.

Dave then reviews some of the development tools to build OSGi applications. These tools include component frameworks like Spring DM, Guice and iPOJO; build tools like Eclipse PDE, SpringSource Tool Suite, Tyco and Sigil; and debugging tools of Eclipse, dmServer, Newton/Infiniflow and Sigil. Dave argues that debugging tools are currently the weakest type of OSGi development tools.

Finally, he explains design principles and inner structures of Newton and Infiniflow for developing distributed OSGi. Infiniflow is a model-driven, distributed, resilient, scalable OSGi runtime which supports Spring and Spring-DM. Newton is a distributed OSGi framework that describes distributed systems using the emerging SCA standard.

Some of the useful links for more information about these subjects are: http://newton.codecauldron.org/
http://sigil.codecauldron.org/
http://www.paremus.com/
Review by Eren Aykin
Download the slides here

ABOUT DAVE SAVAGE

Dave Savage is a software engineer focused on building scalable, modular, dynamic networked software. General areas of interest include architectural/semantic simplicity and ...
More about Dave Savage

ABOUT THE LONDON SPRING USER GROUP

Founded in 2006, the London Spring User Group is now run by Jan Macachek and is a community for hands-on, pragmatic software architects and Spring and JEE developers. We organise monthly events at Skills Matter's premises and also have a discussion group on Linkedin. Join us if you are an architect or developer interested to learn about Spring, architecture, news, features and interesting stuff and share experiences with other Spring users. We meet every second Tuesday of the month at Skills Matter and always go to the pub afterwards.

We also have a Spring UG UK discussion group on Linkedin

Join us if you are an architect or developer interested to learn about Spring, architecture, news, features and interesting stuff and share experiences with other Spring users.
More about the London Spring User Group

PODCAST THE NUTS, BOLTS AND SPRINGS OF DISTRIBUTED OSGI APPLICATIONS.

This session took part at the Spring UG Meeting. You can view the other 1 podcast here.

SOFTWARE ARCHITECTURE COURSES

	AYENDE RAHIEN'S RAVENDB WORKSHOP
	BRIAN SLETTEN'S SEMANTIC WEB BOOTCAMP
	CRAIG LARMAN'S OBJECT DESIGN W PATTERNS
	DAVID LARIBEE'S LEADING LEAN/AGILE TEAMS
	DAVID LARIBEE'S LEADING LEAN/AGILE TEAMS IN NYC
	ERIC EVANS' DDD IMMERSION WORKSHOP
	ERIC EVANS' DDD OVERVIEW
	GREG YOUNG'S CQRS, DOMAIN EVENTS & DDD
	GREG YOUNG'S SUPER INTENSIVE CQRS WEEKEND
	IAN ROBINSON AND JIM WEBBER'S NEO4J TUTORIAL
	MARK BIRBECK'S RDFA THEORY AND PRACTICE
	RICK EVANS' COHERENCE CLUSTERED CACHING
	SIMON BROWN'S ENTERPRISE SOFTWARE DEVELOPER
	SIMON BROWN'S SOFTWARE ARCHITECTURE FOR DEVELOPERS
	UDI DAHAN'S ADV DISTRIBUTED DESIGN W SOA
	UDI DAHAN'S NSERVICEBUS WORKSHOP
	UNCLE BOB'S ADVANCED TDD

SOFTWARE ARCHITECTURE PODCASTS

	Enterprise Integration John T. Davies : 12th Dec 2011
	Web architecture Uncle Bob (Robert C. Martin) : 28th Nov 2011
	Frustrated Architect Simon Brown : 15th Nov 2011
	State of NOSQL Emil Eifrem : 2nd Nov 2011
	Cassandra Dave Gardner : 2nd Nov 2011
	Dr Who & Neo4j Ian Robinson : 2nd Nov 2011
	MongoDB + Scala: Case Classes, Documents Brendan McAdams : 2nd Nov 2011
	Introduction to Platform MapReduce Simon Waterer : 12th Oct 2011
	Get started - FuseIDE Scott Cranton : 27th Sep 2011
	Messaging's Future Martin Sustrik : 23rd Sep 2011
	Introducing MQTT Andy Piper : 23rd Sep 2011
	Realtime web: Not there yet! Marek Majkowski : 23rd Sep 2011
	PubSub for the web : PubSubHubbub, XMPP Julien Genestoux : 23rd Sep 2011
	Q&A with Udi Dahan Udi Dahan : 13th Sep 2011
	Load Testing for Developers Simon Brown : 5th Sep 2011

OTHER SOFTWARE ARCHITECTURE EVENTS

	Eric Evans' DDD Immersion Workshop 4 DAY COURSE. Featuring Alberto Brandolini London, Monday, February 13th
	Drive your DBA Crazy in 3 easy steps FREE EVENT: In The Brain of Alberto Brandolini London, Tuesday, February 14th
	Udi Dahan's NServiceBus Workshop 4 DAY COURSE. Featuring Andreas Ohlund London, Monday, February 20th
	Putting your events on a diet FREE EVENT: In The Brain of Andreas Ohlund London, Monday, February 20th
	Ayende Rahien's RavenDB Workshop 2 DAY COURSE. Featuring Itamar Syn-Hershko London, Tuesday, February 28th
	QCon London 2012 CONFERENCE (3 DAYS) London, Wednesday, March 7th BOOK NOW!
	Elevate Events FREE EVENT: Elevate Launch Event London, Wednesday, March 7th
	Craig Larman's Object Design w Patterns 4 DAY COURSE. Featuring Francis Sanger London, Monday, March 12th