Unclog the server bottleneck with active containers.

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Tutorial: Unclog the server bottleneck with active containers.

In server-side control architectures such as Java ServerFaces (JSF) or Struts, a majority of the control events must be handled on the server side to update the state of the control. For every user event, the entire page data is sent back to the server...

Tutorial Details:

Unclog the server bottleneck with active containers

Regular developerWorks contributor Aashish Patil offers yet another inventive solution to a common problem. In this article, Aashish shows you how to use containers to overcome data-processing redundancy, which can otherwise drain the life out of your handheld or Web server.
In server-side control architectures such as Java ServerFaces (JSF) or Struts, a majority of the control events must be handled on the server side to update the state of the control. For every user event, the entire page data is sent back to the server as part of the form submission. Even data that has not changed or is not affected by the user event is sent to (and back from) the server. It is obvious that handhelds, overburdened Web servers, and possibly wireless networks would benefit from the avoidance of redundant data processing in these instances; the question is how to implement a solution.

The problem for the developer distributing a server-side control component is that he or she does not know the kind of environment the component will be used in. The component might run on a page that contains a lot of other components; on a page that exists within deeply nested frames; or as part of a composite control component, such as a drop-down list and text box. While every environment poses its own particular challenges, the composite control component is a particularly strong candidate for data-processing redundancy. It is possible that the majority of internal events generated by one of the composite controls results in an update of the other controls within the portlet.

In this article, I'll consider a conceptual solution for the problem of data-processing redundancy in a composite control component.

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