[Jakarta-httpclient Wiki] Update of "HttpAsyncThreadingDesign" by RolandWeber

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The following page has been changed by RolandWeber:
http://wiki.apache.org/jakarta-httpclient/HttpAsyncThreadingDesign

The comment on the change is:
documented outcome of the design discussion on the developer list

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  background thread and thereby interfere with processing of other requests and responses.
  
  
+ === Consolidated Design ===
+ 
+ After discussion on the developer mailing list, the following design choices have been made for the initial implementation.
+ They are subject to review, discussion, and change.
+ 
+  1. Preprocessing can be switched between application thread and background thread through a parameter.[[BR]] The default is to preprocess in the application thread, since that keeps bad requests that fail to preprocess out of the dispatcher.
+  1. Postprocessing can be switched between application thread and background thread through a parameter.[[BR]] The default is to postprocess in the background thread, since it is unpredictable which of several application threads would be the one that does the postprocessing.
+  1. Consuming of the remaining response body is done in the background thread, since that step is logically tied to connection management.[[BR]] Applications that don't want the background thread to consume the response body can consume it explicitly before closing the handle.
+ 
  == Non-blocking IO Implementation ==
  
  ''This is the place for discussing {{{java.nio}}} based dispatchers.''

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