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Scaling Components: David Johnson, CTO of IPCommerce, on software components

June 1, 2006

Topic: Component Technologies

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Satnam Singh - Cluster-level Logging of Containers with Containers
This article shows how cluster-level logging infrastructure can be implemented using open source tools and deployed using the very same abstractions that are used to compose and manage the software systems being logged. Collecting and analyzing log information is an essential aspect of running production systems to ensure their reliability and to provide important auditing information. Many tools have been developed to help with the aggregation and collection of logs for specific software components (e.g., an Apache web server) running on specific servers (e.g., Fluentd and Logstash.)


Peter Kriens - How OSGi Changed My Life
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Len Takeuchi - ASPs: The Integration Challenge
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Chris Richardson - Untangling Enterprise Java
Separation of concerns is one of the oldest concepts in computer science. The term was coined by Dijkstra in 1974.1 It is important because it simplifies software, making it easier to develop and maintain. Separation of concerns is commonly achieved by decomposing an application into components. There are, however, crosscutting concerns, which span (or cut across) multiple components. These kinds of concerns cannot be handled by traditional forms of modularization and can make the application more complex and difficult to maintain.


Building software components and then integrating them with applications built by others has always been one of the most difficult challenges for any development team. In today’s Web environment, developers are now being asked to build components that can be dynamically plugged into any application anywhere on the Web. In a conversation with Queuecast host Mike Vizard, David Johnson, CTO of IPCommerce, a company that specializes in distributed payment systems, explains how his company is rising to that very challenge.



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