Use XACML Decision Caching with default options
Case 1 : Use the Decision Caching System As Is           test/policies/interop/xacml-policySet.xml              test/policies/interop/xacml-policy2.xml                        test/policies/interop/xacml-policy3.xml                   test/policies/interop/xacml-policy4.xml                        test/policies/interop/xacml-policy5.xml                        In this case, for a high transaction system, the cache will grow with each request and you have better decision making.