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Developer Focus on AJAX and Rich Internet Technologies

Michael Poulin

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Top Stories by Michael Poulin

Application architects have heard about the increased importance of security, but in many cases they really don't know how to approach this issue. In this article, I'll share my experience and define a few basic steps and checkpoints for building application architecture with security in mind. This year, architects have started to face several domestic (SOX and HIPPA) and even international (Basel II) regulations that require a certain level of protection of the personal and financial data that's processed and owned by the companies. Though network and operating system security solutions have done a great job in their domains, there is still one weakly protected path to corporate data - it's a spectrum of commercial and homegrown applications. I won't discuss why security is important and what is required by the regulations because you can find a lot of related mater... (more)

Resolving RIA-SOA Conflict

From the first days of Rich Internet Application (RIA) technology, many enthusiasts found an analogy between RIA and service-oriented architecture (SOA). Some of them talked about the benefits of a would-be-wonderful use of SOA in RIA; others saw RIA as a SOA face. Nonetheless, there are experts who see a discrepancy between RIA and SOA concepts. The major disagreement between RIA and SOA is in the fine-grained operations in RIA and the coarse-grained type of interfaces of SOA business services. Let's take a closer look at this problem. In a glance we can see that the RIA spectr... (more)

Service Versioning For SOA

(Found in a blog, "Versioning is as inevitable as security.") SOA development practice isn't much different from other software development practices except for design and maintenance. Multiple self-containing and aggregated services that interact with others have their own lifecycle and evolution. The loosely coupling model of SOA services significantly simplifies design but creates additional difficulties in maintenance, especially in the interoperability of different service versions. To better understand the requirements of SOA service versioning, let me ask several question... (more)

Collecting Financial Market Data with Java 5

In this article I'll share my experience in using the new features in Java 5 for solving an old industry problem, the problem of collecting constantly published financial data in reliable way. The business case example I'm going to discuss relates to the acquisition of some sort of market data published by a financial data source system like Reuters. Data Source Publishing Conditions Assume a Data Source allows for a consumer subscription that results in publishing market data messages via a DataFeed Channel. The consumer can listen to the messages, get them from the Event Queue, ... (more)

Does a Web Service Make a Service for SOA?

What could be easier than to take your application, wrap it with a Web Service, announce it or register it in the UDDI and get a SOA Service? Even better - take a data warehouse, cover a SQL executing code with a Web Service and expose it to SOA, isn't it simple? This article is for those architects and managers who like such "simplicity." If you believe that a Web Service itself doesn't convert an application into the SOA Service, you might read the article just out of curiosity. A Service or Not a Service Discussions about Service Oriented Architecture (SOA) initiated by people ... (more)