[Zope-dev] GUF and SQL

Hi all, I'am using GUF with ZSqlMethods and found out, that every time a object is accessed the sql-method is called, which means to me that if i have many objects in my dtml-doc, then it takes a long time it is rendered. Thats why i wrote a little Product, which has a AccessRule that makes User authentication over GUF. I added a user-cache in my Product, which stores AUTHENTICATION-Strings of authenticated-users a num of secs. Is there a why to implement such a AUTHENTICATION-String cache in the GUF-Product, it brings a lot of performance, when using GUF with SQL. thanks as