How to make good use of caching technology on the ADO server side under asp?

Please see the following example, this is an example program used to display book classification:


< %@ LANGUAGE=JavaScript % > 
< html > 
< body > 
< form method=post > 
Book classification; < %= getBooksListBox() %>
< p> 
< input type=submit > 

< % 
function getBooksListBox() 
{ 
BooksListBox = Application("BooksListBox") 
if (BooksListBox != null) return BooksListBox; 
crlf = (13, 10) 
BooksListBox = "< select name=Books>" + crlf; 
SQL = "SELECT * FROM Books ORDER BY Name"; 
cnnBooks = (""); 
("Books", "Admin",""); 
rstBooks = (SQL); 
fldBookName = rstBooks("BookName"); 
while (!){ 
BooksListBox = BooksListBox + " < option>" + 
fldBookName + "" + crlf; 
(); 
} 
BooksListBox = BooksListBox + "" 
Application("BooksListBox") = BooksListBox

'  Pay attention to this sentence, the essence of Application technology should be
return BooksListBox; 
} 
% >