cache cache_ntlm {

        driver = "rlm_cache_rbtree"
        key = "%{User-Name}%{Calling-Station-Id}"
        # Cache for 5 minutes
        ttl = 300
        add_stats = no
        update {
                &request:Tmp-Integer-9 += &request:Tmp-Integer-9

                # Add our own to show when the cache was last updated
                &reply:Reply-Message += "Cache last updated at %t"
        }
}

