limit_req_zone $http_user_agent zoneua_limit:10m rate1r/m;location/{limit_req zoneua_limit burst1nodelay;# 或直接返回444if($http_user_agentMozilla/5.0 (iPhone; CPU iPhone OS 15_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Mobile/11D257 Safari/604.1){return444;}}