- com.sun.faces.numberOfViewsInSession - Defaults to 15. This parameter defines the maximum number of JSF views stored in the session for per logical view. The map used to store the views uses an LRU algorithm to keep the map from growing beyond the configured value.
- com.sun.faces.numberOfLogicalViews - Defaults to 15. This parameter defines the maximum number of logical views to store per session. The map used to store the logical views uses an LRU algorighm to keep the map from growing beyone the configured value.
Logical views are best defined as top level view that may have one or more actual views inside of it. A new logical view entry will be created any time a GET occurs (a new request, a frameset, two browser windows...). The value of this logical entry is another Map that will be used to store the view information (i.e. the structure and state). As a user progresses through an application using standard JSF navigation mechanisms, additional view state will be added to the Map associated with a single logical view.
As an example, using the jsf-guessNumber application.
- First request results in a state marker value of j_id1:j_id2. j_id1 represents the logical view, and j_id2 represents the actual view state.
- Next, enter a guess. The new state marker value is j_id1:j_id3 - again j_id1 being the logical view, and j_id3 being the actual view. So at this point, the Map associated with logical view j_id1 has two entries, j_id2, and i_id3.
- Next, click the Back button, and the new marker is j_id1:j_id4.
- Now, issue a request to the context root of the application and notice that the state marker has now changed to j_id5:j_id6. As stated above, each GET will cause a new logical entry to be created. At this point, there are two logical Maps, j_id1 and j_id5. Logical Map j_id1, has three entries, j_id2, j_id3, and j_id4. Logical Map j_id5, has a single entry, j_id6.
- Start with "A comment on the numberOfXXX parameters."
- http://wasdynacache.blogspot.com.br/2011/04/jsf-12-sun-reference-implementation.html
- http://oss.org.cn/ossdocs/java/ee/javaeetutorial5/doc/JSFConfigure11.html
- http://stackoverflow.com/questions/4105439/jsf-numberofviewsinsession-vs-numberoflogicalviews-and-viewexpiredexception
- http://stackoverflow.com/questions/7532030/logical-views-vs-actual-views-in-jsf-2-0
- http://www.coderanch.com/t/430764/JSF/java/Not-Session-Timeout-but-throw
- http://blog.codecentric.de/en/2010/08/richfaces-sessions-eating-memory-analysis-of-a-memory-leak/
- http://stackoverflow.com/questions/7634857/ajax4jsf-ajaxstateholder-session-memory-leak
- http://stackoverflow.com/questions/7555051/jsf-2-view-expired-weirdest-bug-update-occurs-when-saving-state-to-server-onl
Good explanation, http://stackoverflow.com/questions/4105439/com-sun-faces-numberofviewsinsession-vs-com-sun-faces-numberoflogicalviews
http://stackoverflow.com/questions/15265433/how-and-when-is-a-viewscoped-bean-destroyed-in-jsf