It is apparent true that if the session size is big, the performance will be
negatively affected. The question is that how to actively control the size of session.
Let's discuss this question:
I have a page which displays all the subordinates of a manager, for some reasons I
want to create a List or a Vector containing all the subordinates and put this List or
Vector to the session. Each element in the List or Vector is a Java object, Employee(
each Employee object has 200 String attributes, among which 5 are needed to be
displayed on the screen)
A picture of this situation is:
Vector allSubordinates = new Vector();
allSubordinates.add(Employee1);
allSubordinates.add(Employee2);
.......
allSubordinates.add(Employee1000);
session.setAttribute("allSubordinates",allSubordinates);
Do you think this actually makes the session very big?
Then what will be the improvement of the following? Instead of add all the employee
objects, we create a very small object called DisplayObject, which just contains the 5
attributes required on the screen.
Vector allSubordinates = new Vector();
allSubordinates.add(DisplayObject1);
allSubordinates.add(DisplayObject2);
.......
allSubordinates.add(DisplayObject1000);
session.setAttribute("allSubordinates",allSubordinates);
Your sharing of opinion is appreciated!
Thanks.
Larry
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