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From "Howard M. Lewis Ship (JIRA)" <...@tapestry.apache.org>
Subject [jira] Created: (TAPESTRY-2050) Optimize page construction for repeated construction of the same page
Date Tue, 15 Jan 2008 21:01:39 GMT
Optimize page construction for repeated construction of the same page
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                 Key: TAPESTRY-2050
                 URL: https://issues.apache.org/jira/browse/TAPESTRY-2050
             Project: Tapestry
          Issue Type: Improvement
          Components: tapestry-core
    Affects Versions: 5.0.7
            Reporter: Howard M. Lewis Ship
            Priority: Minor


Construction of pages is probably the largest expense for any request, as it involves considerable
work to identify what components to instantiate, what bindings to create, and what template
tokens to be converted into what ComponentPageElements.

It should be possible to devise a "page template" that is a list of commands for constructing
a page.  The current PageLoaderProcessor would generate that list of commands.  Creating a
page instance would be a matter of executing the commands.  This would decrease the amount
of time needed to generate the 2nd (and later) instances of a page, and would increase the
likelyhood that common page elements for literal text could be re-used across page instances.

Making page instance creation less expensive would allow Tapestry to more aggressively cull
unused page instances (i.e., shorten the active window) while not sacrificing the ability
to handle a request surge.



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