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From "Carlin Rogers (JIRA)" <...@beehive.apache.org>
Subject [jira] Created: (BEEHIVE-1093) Add URLTemplateFactory and TemplatedURLFormatter to the request to avoid synchronized bottleneck in ServletRequest.
Date Thu, 06 Apr 2006 17:08:30 GMT
Add URLTemplateFactory and TemplatedURLFormatter to the request to avoid synchronized bottleneck
in ServletRequest.
-------------------------------------------------------------------------------------------------------------------

         Key: BEEHIVE-1093
         URL: http://issues.apache.org/jira/browse/BEEHIVE-1093
     Project: Beehive
        Type: Improvement

  Components: NetUI  
    Versions: V1, 1.0.1    
    Reporter: Carlin Rogers
 Assigned to: Carlin Rogers 
     Fix For: v.next


Some containers such as tomcat, implement the ServletContext getAttribute method with synchronization
on the attribute object or the attributes map. In beehive NetUI, the URL template factory
and the formatter used for rewriting are cached as attributes on the ServletContext. This
would be a bottleneck under a large load for an app with pages that require lots of URL rewriting
(I.E. lots of NetUI anchor tags, etc.). For each href or URL that needs to be written in a
single user request, the URL rewriting gets the ServletContext attributes for the template
factory and formatter.

To improve performance, the URL template factory and formatter could be set as attributes
to the request. Then, the URL rewriting could get the template factory and formatter from
the individual request and minimize the conflict with multiple user requests and the synchronization
at the ServletContext attributes. Note, we still need to cache these objects globally as attributes
on the context but at the start of processing a page flow request, the objects could be pulled
from the context and added to the request.

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