Add URLTemplateFactory and TemplatedURLFormatter to the request to avoid
synchronized bottleneck in ServletRequest.
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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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