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Innovative Technologies and Approaches for the Government

Tieu Luu

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Top Stories by Tieu Luu

Over the past few years I’ve been helping a lot of government clients design and implement architectures for information-sharing.  When it comes to information-sharing one of the most important aspects is the relationships in the data being shared because it’s those relationships that provide the context to help you understand and utilize the information better.  Within an enterprise, key data types are often dispersed across multiple systems so a lot of the things we did included implementing data services (i.e. SOAP/WSDL-based Web Services) on top of each of these systems to provide shared access to the underlying data.  While this approach does help share the systems’ underlying data with the rest of the enterprise, you still end up with these web services providing “islands of information”.  I.e. the relationships across the data being shared were not exposed an... (more)

Loosely Coupled Flex and JS Widgets

It has become very popular to build web sites that use and embed widgets from various providers. For example, MySpace and Facebook let their users easily embed various JavaScript widgets and Flash-based applications and videos onto their personal pages. In most cases, the widgets act in a standalone fashion, unaware of the other widgets contained on the same page. Standalone widgets are fine for simple portal pages but for more targeted applications some level of interaction among the components on the page is needed. When such interactions are needed, they are usually achieved t... (more)

Opinion: Not All SOAs Need ESBs

I've recently asked one of my developers to research some integration and middleware technologies for a project we're working on. After spending a couple days on this, he said to me "these things are all part of ESBs now" - i.e. all the integration and middleware vendors have pretty much taken these capabilities and bundled them into their ESB platforms. "Oh you need a message bus? That's part of our ESB now." "Oh you need this adapter? That's included in our ESB." In most cases when you're implementing an SOA, you will need some piece of middleware or integration technology. With ... (more)

SOA Data Strategy

The adoption of Service Oriented Architecture (SOA) promises to further decouple monolithic applications by decomposing business functions and processes into discrete services. While this makes enterprise computing assets more accessible and reusable, SOA implementation patterns are primarily an iteration over previous application development models. Like most application development evolutions, SOA approaches inject more layers and flexibility into the application tier, but have often neglected the most fundamental building block of all applications: the underlying data. Curren... (more)

Don't Forget Security on the Way Out

Typically when we think about security for a Web service, our focus is on how to protect it from unauthorized and malicious users. Thus, we tend to concentrate on such things as authentication of the requestor, checking to see that the requestor is authorized to access the service, validation of the request message, and so forth - all things that happen on the way in or during a request for the service. However, there is an equally important set of security functions that need to occur on the way out or after the service has finished processing the request. Because these securit... (more)