Feeds

WebLogic man goes full circle with SpringSource

Second wind for Java application servers

Top three mobile application threats

But so far, all these technologies were about development, not run time. That's where Eclipse Equinox comes in. Leveraging the OSGi component model that Eclipse embraced for the IDE, Equinox extends the idea to run time. Like Java, OSGi was conceived for different purposes (Java was for set-top boxes, while OSGi was the framework for provisioning services in the smart, networked home). You could consider both as fraternal twins reunited at adolescence.

Eclipse reincarnated OSGi as the dynamic service bundle, first for its IDE (where developers could swap different vendor plug-ins at will), and more recently as a new run time.

That's where Cooper-Ellis views OSGi as giving Java application servers a second wind. In place of installing the entire Java Enterprise Edition stack, OSGi lets you provision only the features you need at run time. So if you add distributed nodes, you can take the Java Message Service (JMS) plug-in if traffic spikes, hot deploy clustering support, and so on. The advantage is that if you don't need these or other bundles, you could run the server on a very tiny footprint of code, which reduces overhead and potentially makes it blazingly fast.

That was what BEA was trying to do with the micro-Service Architecture (mSA) that it announced roughly 18 months before Oracle swooped in, and how it built WebLogic Event Server, its complex event streaming engine. The product only used Java Enterprise Edition features such as managing availability, security and user management, it dispensed with much of the rest of the stack, and supported development with POJOs, which included support of the Spring framework.

Simple message

OSGi/Eclipse Equinox is part of the same return to simplicity that originally spawned POJOs and the rebel frameworks. Beyond the Java space, it's the same trend that has driven the popularity of dynamic scripting languages as a faster means to developing the relatively straightforward data-driven apps that are the mainstream of the web, and it's also the driving force behind AJAX (which is easy enough that casual developers, business analysts, or web designers can grow dangerous).

Each of these has catches and limitations but they are evidence that - for the rest of us - the 80/20 rule lives when it comes to developing for the web.

This article originally appeared in onStrategies.

Copyright (c) 2008, onStrategies.com

Tony Baer is the principal with analyst onStrategies. With 15 years in enterprise systems and manufacturing, Tony specialises in application development, data warehousing and business applications, and is the author of several books on Java and .NET.

Maximizing your infrastructure through virtualization

More from The Register

next story
Apple fanbois SCREAM as update BRICKS their Macbook Airs
Ragegasm spills over as firmware upgrade kills machines
HIDDEN packet sniffer spy tech in MILLIONS of iPhones, iPads – expert
Don't panic though – Apple's backdoor is not wide open to all, guru tells us
Mozilla fixes CRITICAL security holes in Firefox, urges v31 upgrade
Misc memory hazards 'could be exploited' - and guess what, one's a Javascript vuln
NO MORE ALL CAPS and other pleasures of Visual Studio 14
Unpicking a packed preview that breaks down ASP.NET
Captain Kirk sets phaser to SLAUGHTER after trying new Facebook app
William Shatner less-than-impressed by Zuck's celebrity-only app
Cheer up, Nokia fans. It can start making mobes again in 18 months
The real winner of the Nokia sale is *drumroll* ... Nokia
EU dons gloves, pokes Google's deals with Android mobe makers
El Reg cops a squint at investigatory letters
Chrome browser has been DRAINING PC batteries for YEARS
Google is only now fixing ancient, energy-sapping bug
prev story

Whitepapers

Top three mobile application threats
Prevent sensitive data leakage over insecure channels or stolen mobile devices.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Top 8 considerations to enable and simplify mobility
In this whitepaper learn how to successfully add mobile capabilities simply and cost effectively.
Application security programs and practises
Follow a few strategies and your organization can gain the full benefits of open source and the cloud without compromising the security of your applications.
The Essential Guide to IT Transformation
ServiceNow discusses three IT transformations that can help CIO's automate IT services to transform IT and the enterprise.