share information between authorize and authenticate sections (rlm_perl & rlm_python)

Hello, If someone can advise me... How to share information between the authorize() function and the authenticate() function within a perl or python script ? For example, i get some information from a database in authorize() that will reuse it in authenticate()? I could resubmit the sql request again, but it is clearly not efficient. in perl, i could write some new attributes in RAD_CHECK ??, then authenticate() will access them. in python, attributes are read only, so i cannot use them to pass information to authenticate(). A simple database, like redis, could be a solution by adding info with the id of the request (with Message-Authenticator as key)? If someone has an idea, it is very welcome... Regards, Laurent