1. A method of prefetching attributes used in access control evaluation, the method comprising: retrieving an access control policy that comprises a plurality of rules, the plurality of rules further comprising a plurality of parameters; categorizing at least one of the plurality of rules into a class from a plurality of classes based on at least one of the plurality of parameters, the class being a grouping based on the at least one of the plurality of parameters; identifying an attribute associated with the at least one of the plurality of parameters; mapping the attribute to the class from the plurality of classes, at least one of the steps being performed by at least one hardware device; and providing an access control decision based on the attribute and the access control policy.