diff --git a/apps/emqx/src/emqx_banned.erl b/apps/emqx/src/emqx_banned.erl
index 7d7e4713a..53a71736a 100644
--- a/apps/emqx/src/emqx_banned.erl
+++ b/apps/emqx/src/emqx_banned.erl
@@ -146,19 +146,36 @@ to_timestamp(Rfc3339) when is_binary(Rfc3339) ->
 to_timestamp(Rfc3339) ->
     calendar:rfc3339_to_system_time(Rfc3339, [{unit, second}]).
 
--spec(create(emqx_types:banned() | map()) -> ok).
+-spec(create(emqx_types:banned() | map()) ->
+    {ok, emqx_types:banned()} | {error, {already_exist, emqx_types:banned()}}).
 create(#{who    := Who,
          by     := By,
          reason := Reason,
          at     := At,
          until  := Until}) ->
-    mria:dirty_write(?BANNED_TAB, #banned{who = Who,
-                                          by = By,
-                                          reason = Reason,
-                                          at = At,
-                                          until = Until});
-create(Banned) when is_record(Banned, banned) ->
-    mria:dirty_write(?BANNED_TAB, Banned).
+    Banned = #banned{
+        who = Who,
+        by = By,
+        reason = Reason,
+        at = At,
+        until = Until
+    },
+    create(Banned);
+
+create(Banned = #banned{who = Who})  ->
+    case look_up(Who) of
+        [] ->
+            mria:dirty_write(?BANNED_TAB, Banned),
+            {ok, Banned};
+        [OldBanned = #banned{until = Until}] ->
+            case Until < erlang:system_time(second) of
+                true ->
+                    {error, {already_exist, OldBanned}};
+                false ->
+                    mria:dirty_write(?BANNED_TAB, Banned),
+                    {ok, Banned}
+            end
+    end.
 
 look_up(Who) when is_map(Who) ->
     look_up(pares_who(Who));
diff --git a/apps/emqx/src/emqx_flapping.erl b/apps/emqx/src/emqx_flapping.erl
index 0b4611c4c..600144adc 100644
--- a/apps/emqx/src/emqx_flapping.erl
+++ b/apps/emqx/src/emqx_flapping.erl
@@ -129,7 +129,8 @@ handle_cast({detected, #flapping{clientid   = ClientId,
                              reason = <<"flapping is detected">>,
                              at     = Now,
                              until  = Now + (Interval div 1000)},
-            emqx_banned:create(Banned);
+            {ok, _} = emqx_banned:create(Banned),
+            ok;
         false ->
             ?SLOG(warning, #{
                 msg => "client_disconnected",
diff --git a/apps/emqx/src/emqx_listeners.erl b/apps/emqx/src/emqx_listeners.erl
index 0581937b1..c6ef92b95 100644
--- a/apps/emqx/src/emqx_listeners.erl
+++ b/apps/emqx/src/emqx_listeners.erl
@@ -17,6 +17,8 @@
 %% @doc Start/Stop MQTT listeners.
 -module(emqx_listeners).
 
+-elvis([{elvis_style, dont_repeat_yourself, #{min_complexity => 10000}}]).
+
 -include("emqx_mqtt.hrl").
 -include("logger.hrl").
 
@@ -28,6 +30,7 @@
         , is_running/1
         , current_conns/2
         , max_conns/2
+        , id_example/0
         ]).
 
 -export([ start_listener/1
@@ -48,6 +51,18 @@
 -define(CONF_KEY_PATH, [listeners]).
 -define(TYPES_STRING, ["tcp","ssl","ws","wss","quic"]).
 
+-spec(id_example() -> atom()).
+id_example() ->
+    id_example(list()).
+
+id_example([]) ->
+    {ID, _} = hd(list()),
+    ID;
+id_example([{'tcp:default', _} | _]) ->
+    'tcp:default';
+id_example([_ | Listeners]) ->
+    id_example(Listeners).
+
 %% @doc List configured listeners.
 -spec(list() -> [{ListenerId :: atom(), ListenerConf :: map()}]).
 list() ->
@@ -235,10 +250,10 @@ do_start_listener(quic, ListenerName, #{bind := ListenOn} = Opts) ->
                          , {key, maps:get(keyfile, Opts)}
                          , {alpn, ["mqtt"]}
                          , {conn_acceptors, lists:max([DefAcceptors, maps:get(acceptors, Opts, 0)])}
-                         , {idle_timeout_ms, lists:max([
-                                                emqx_config:get_zone_conf(zone(Opts), [mqtt, idle_timeout]) * 3
-                                              , timer:seconds(maps:get(idle_timeout, Opts))]
-                                              )}
+                         , {idle_timeout_ms,
+                                lists:max([
+                                    emqx_config:get_zone_conf(zone(Opts), [mqtt, idle_timeout]) * 3,
+                                    timer:seconds(maps:get(idle_timeout, Opts))])}
                          ],
             ConnectionOpts = #{ conn_callback => emqx_quic_connection
                               , peer_unidi_stream_count => 1
@@ -281,7 +296,8 @@ flatten_listeners(Conf0) ->
                       || {Type, Conf} <- maps:to_list(Conf0)])).
 
 do_flatten_listeners(Type, Conf0) ->
-    [{listener_id(Type, Name), maps:remove(authentication, Conf)} || {Name, Conf} <- maps:to_list(Conf0)].
+    [{listener_id(Type, Name), maps:remove(authentication, Conf)} ||
+        {Name, Conf} <- maps:to_list(Conf0)].
 
 esockd_opts(Type, Opts0) ->
     Opts1 = maps:with([acceptors, max_connections, proxy_protocol, proxy_protocol_timeout], Opts0),
diff --git a/apps/emqx/test/emqx_banned_SUITE.erl b/apps/emqx/test/emqx_banned_SUITE.erl
index de117ab00..e09d0baae 100644
--- a/apps/emqx/test/emqx_banned_SUITE.erl
+++ b/apps/emqx/test/emqx_banned_SUITE.erl
@@ -41,16 +41,16 @@ t_add_delete(_) ->
                      at = erlang:system_time(second),
                      until = erlang:system_time(second) + 1000
                     },
-    ok = emqx_banned:create(Banned),
+    {ok, _} = emqx_banned:create(Banned),
     ?assertEqual(1, emqx_banned:info(size)),
 
     ok = emqx_banned:delete({clientid, <<"TestClient">>}),
     ?assertEqual(0, emqx_banned:info(size)).
 
 t_check(_) ->
-    ok = emqx_banned:create(#banned{who = {clientid, <<"BannedClient">>}}),
-    ok = emqx_banned:create(#banned{who = {username, <<"BannedUser">>}}),
-    ok = emqx_banned:create(#banned{who = {peerhost, {192,168,0,1}}}),
+    {ok, _} = emqx_banned:create(#banned{who = {clientid, <<"BannedClient">>}}),
+    {ok, _} = emqx_banned:create(#banned{who = {username, <<"BannedUser">>}}),
+    {ok, _} = emqx_banned:create(#banned{who = {peerhost, {192,168,0,1}}}),
     ?assertEqual(3, emqx_banned:info(size)),
     ClientInfo1 = #{clientid => <<"BannedClient">>,
                     username => <<"user">>,
@@ -83,7 +83,7 @@ t_check(_) ->
 
 t_unused(_) ->
     {ok, Banned} = emqx_banned:start_link(),
-    ok = emqx_banned:create(#banned{who = {clientid, <<"BannedClient">>},
+    {ok, _} = emqx_banned:create(#banned{who = {clientid, <<"BannedClient">>},
                                     until = erlang:system_time(second)}),
     ?assertEqual(ignored, gen_server:call(Banned, unexpected_req)),
     ?assertEqual(ok, gen_server:cast(Banned, unexpected_msg)),
diff --git a/apps/emqx/test/emqx_persistent_session_SUITE.erl b/apps/emqx/test/emqx_persistent_session_SUITE.erl
index 3b6ef495d..af59343e7 100644
--- a/apps/emqx/test/emqx_persistent_session_SUITE.erl
+++ b/apps/emqx/test/emqx_persistent_session_SUITE.erl
@@ -533,8 +533,9 @@ t_publish_while_client_is_gone(Config) ->
                                        {clean_start, false}
                                      | Config]),
     {ok, _} = emqtt:ConnFun(Client2),
-    [Msg1] = receive_messages(1),
-    [Msg2] = receive_messages(1),
+    Msgs = receive_messages(2),
+    ?assertEqual(length(Msgs), 2),
+    [Msg2, Msg1] = Msgs,
     ?assertEqual({ok, iolist_to_binary(Payload1)}, maps:find(payload, Msg1)),
     ?assertEqual({ok, 2}, maps:find(qos, Msg1)),
     ?assertEqual({ok, iolist_to_binary(Payload2)}, maps:find(payload, Msg2)),
diff --git a/apps/emqx_authn/src/emqx_authn_api.erl b/apps/emqx_authn/src/emqx_authn_api.erl
index 98159f5b7..bef27f99d 100644
--- a/apps/emqx_authn/src/emqx_authn_api.erl
+++ b/apps/emqx_authn/src/emqx_authn_api.erl
@@ -30,6 +30,9 @@
 
 % Swagger
 
+-define(API_TAGS_GLOBAL, [<<"authentication">>, <<"authentication config(global)">>]).
+-define(API_TAGS_SINGLE, [<<"authentication">>, <<"authentication config(single listener)">>]).
+
 -export([ api_spec/0
         , paths/0
         , schema/1
@@ -126,7 +129,7 @@ schema("/authentication") ->
     #{
         'operationId' => authenticators,
         get => #{
-            tags => [<<"authentication">>, <<"global">>],
+            tags => ?API_TAGS_GLOBAL,
             description => <<"List authenticators for global authentication">>,
             responses => #{
                 200 => emqx_dashboard_swagger:schema_with_example(
@@ -135,7 +138,7 @@ schema("/authentication") ->
             }
         },
         post => #{
-            tags => [<<"authentication">>, <<"global">>],
+            tags => ?API_TAGS_GLOBAL,
             description => <<"Create authenticator for global authentication">>,
             'requestBody' => emqx_dashboard_swagger:schema_with_examples(
                 emqx_authn_schema:authenticator_type(),
@@ -154,9 +157,9 @@ schema("/authentication/:id") ->
     #{
         'operationId' => authenticator,
         get => #{
-            tags => [<<"authentication">>, <<"global">>],
+            tags => ?API_TAGS_GLOBAL,
             description => <<"Get authenticator from global authentication chain">>,
-            parameters => [{id, mk(binary(), #{in => path, desc => <<"Authenticator ID">>})}],
+            parameters => [param_auth_id()],
             responses => #{
                 200 => emqx_dashboard_swagger:schema_with_examples(
                     emqx_authn_schema:authenticator_type(),
@@ -165,9 +168,9 @@ schema("/authentication/:id") ->
             }
         },
         put => #{
-            tags => [<<"authentication">>, <<"global">>],
+            tags => ?API_TAGS_GLOBAL,
             description => <<"Update authenticator from global authentication chain">>,
-            parameters => [{id, mk(binary(), #{in => path, desc => <<"Authenticator ID">>})}],
+            parameters => [param_auth_id()],
             'requestBody' => emqx_dashboard_swagger:schema_with_examples(
                 emqx_authn_schema:authenticator_type(),
                 authenticator_examples()
@@ -182,9 +185,9 @@ schema("/authentication/:id") ->
             }
         },
         delete => #{
-            tags => [<<"authentication">>, <<"global">>],
+            tags => ?API_TAGS_GLOBAL,
             description => <<"Delete authenticator from global authentication chain">>,
-            parameters => [{id, mk(binary(), #{in => path, desc => <<"Authenticator ID">>})}],
+            parameters => [param_auth_id()],
             responses => #{
                 204 => <<"Authenticator deleted">>,
                 404 => error_codes([?NOT_FOUND], <<"Not Found">>)
@@ -196,9 +199,9 @@ schema("/listeners/:listener_id/authentication") ->
     #{
         'operationId' => listener_authenticators,
         get => #{
-            tags => [<<"authentication">>, <<"listener">>],
+            tags => ?API_TAGS_SINGLE,
             description => <<"List authenticators for listener authentication">>,
-            parameters => [{listener_id, mk(binary(), #{in => path, desc => <<"Listener ID">>})}],
+            parameters => [param_listener_id()],
             responses => #{
                 200 => emqx_dashboard_swagger:schema_with_example(
                     hoconsc:array(emqx_authn_schema:authenticator_type()),
@@ -206,9 +209,9 @@ schema("/listeners/:listener_id/authentication") ->
             }
         },
         post => #{
-            tags => [<<"authentication">>, <<"listener">>],
+            tags => ?API_TAGS_SINGLE,
             description => <<"Create authenticator for listener authentication">>,
-            parameters => [{listener_id, mk(binary(), #{in => path, desc => <<"Listener ID">>})}],
+            parameters => [param_listener_id()],
             'requestBody' => emqx_dashboard_swagger:schema_with_examples(
                 emqx_authn_schema:authenticator_type(),
                 authenticator_examples()
@@ -227,12 +230,9 @@ schema("/listeners/:listener_id/authentication/:id") ->
     #{
         'operationId' => listener_authenticator,
         get => #{
-            tags => [<<"authentication">>, <<"listener">>],
+            tags => ?API_TAGS_SINGLE,
             description => <<"Get authenticator from listener authentication chain">>,
-            parameters => [
-                {listener_id, mk(binary(), #{in => path, desc => <<"Listener ID">>})},
-                {id, mk(binary(), #{in => path, desc => <<"Authenticator ID">>})}
-            ],
+            parameters => [param_listener_id(), param_auth_id()],
             responses => #{
                 200 => emqx_dashboard_swagger:schema_with_examples(
                     emqx_authn_schema:authenticator_type(),
@@ -241,12 +241,9 @@ schema("/listeners/:listener_id/authentication/:id") ->
             }
         },
         put => #{
-            tags => [<<"authentication">>, <<"listener">>],
+            tags => ?API_TAGS_SINGLE,
             description => <<"Update authenticator from listener authentication chain">>,
-            parameters => [
-                {listener_id, mk(binary(), #{in => path, desc => <<"Listener ID">>})},
-                {id, mk(binary(), #{in => path, desc => <<"Authenticator ID">>})}
-            ],
+            parameters => [param_listener_id(), param_auth_id()],
             'requestBody' => emqx_dashboard_swagger:schema_with_examples(
                 emqx_authn_schema:authenticator_type(),
                 authenticator_examples()),
@@ -260,12 +257,9 @@ schema("/listeners/:listener_id/authentication/:id") ->
             }
         },
         delete => #{
-            tags => [<<"authentication">>, <<"listener">>],
+            tags => ?API_TAGS_SINGLE,
             description => <<"Delete authenticator from listener authentication chain">>,
-            parameters => [
-                {listener_id, mk(binary(), #{in => path, desc => <<"Listener ID">>})},
-                {id, mk(binary(), #{in => path, desc => <<"Authenticator ID">>})}
-            ],
+            parameters => [param_listener_id(), param_auth_id()],
             responses => #{
                 204 => <<"Authenticator deleted">>,
                 404 => error_codes([?NOT_FOUND], <<"Not Found">>)
@@ -278,9 +272,9 @@ schema("/authentication/:id/move") ->
     #{
         'operationId' => authenticator_move,
         post => #{
-            tags => [<<"authentication">>, <<"global">>],
+            tags => ?API_TAGS_GLOBAL,
             description => <<"Move authenticator in global authentication chain">>,
-            parameters => [{id, mk(binary(), #{in => path, desc => <<"Authenticator ID">>})}],
+            parameters => [param_auth_id()],
             'requestBody' => emqx_dashboard_swagger:schema_with_examples(
                 ref(request_move),
                 request_move_examples()),
@@ -296,12 +290,9 @@ schema("/listeners/:listener_id/authentication/:id/move") ->
     #{
         'operationId' => listener_authenticator_move,
         post => #{
-            tags => [<<"authentication">>, <<"listener">>],
+            tags => ?API_TAGS_SINGLE,
             description => <<"Move authenticator in listener authentication chain">>,
-            parameters => [
-                {listener_id, mk(binary(), #{in => path, desc => <<"Listener ID">>})},
-                {id, mk(binary(), #{in => path, desc => <<"Authenticator ID">>})}
-            ],
+            parameters => [param_listener_id(), param_auth_id()],
             'requestBody' => emqx_dashboard_swagger:schema_with_examples(
                 ref(request_move),
                 request_move_examples()),
@@ -317,9 +308,9 @@ schema("/authentication/:id/import_users") ->
     #{
         'operationId' => authenticator_import_users,
         post => #{
-            tags => [<<"authentication">>, <<"global">>],
+            tags => ?API_TAGS_GLOBAL,
             description => <<"Import users into authenticator in global authentication chain">>,
-            parameters => [{id, mk(binary(), #{in => path, desc => <<"Authenticator ID">>})}],
+            parameters => [param_auth_id()],
             'requestBody' => emqx_dashboard_swagger:schema_with_examples(
                 ref(request_import_users),
                 request_import_users_examples()),
@@ -335,12 +326,9 @@ schema("/listeners/:listener_id/authentication/:id/import_users") ->
     #{
         'operationId' => listener_authenticator_import_users,
         post => #{
-            tags => [<<"authentication">>, <<"listener">>],
+            tags => ?API_TAGS_SINGLE,
             description => <<"Import users into authenticator in listener authentication chain">>,
-            parameters => [
-                {listener_id, mk(binary(), #{in => path, desc => <<"Listener ID">>})},
-                {id, mk(binary(), #{in => path, desc => <<"Authenticator ID">>})}
-            ],
+            parameters => [param_listener_id(), param_auth_id()],
             'requestBody' => emqx_dashboard_swagger:schema_with_examples(
                 ref(request_import_users),
                 request_import_users_examples()),
@@ -356,9 +344,9 @@ schema("/authentication/:id/users") ->
     #{
         'operationId' => authenticator_users,
         post => #{
-            tags => [<<"authentication">>, <<"global">>],
+            tags => ?API_TAGS_GLOBAL,
             description => <<"Create users for authenticator in global authentication chain">>,
-            parameters => [{id, mk(binary(), #{in => path, desc => <<"Authenticator ID">>})}],
+            parameters => [param_auth_id()],
             'requestBody' => emqx_dashboard_swagger:schema_with_examples(
                 ref(request_user_create),
                 request_user_create_examples()),
@@ -371,10 +359,10 @@ schema("/authentication/:id/users") ->
             }
         },
         get => #{
-            tags => [<<"authentication">>, <<"global">>],
+            tags => ?API_TAGS_GLOBAL,
             description => <<"List users in authenticator in global authentication chain">>,
             parameters => [
-                {id, mk(binary(), #{in => path, desc => <<"Authenticator ID">>})},
+                param_auth_id(),
                 {page, mk(integer(), #{in => query, desc => <<"Page Index">>, nullable => true})},
                 {limit, mk(integer(), #{in => query, desc => <<"Page Limit">>, nullable => true})}
             ],
@@ -392,12 +380,9 @@ schema("/listeners/:listener_id/authentication/:id/users") ->
     #{
         'operationId' => listener_authenticator_users,
         post => #{
-            tags => [<<"authentication">>, <<"listener">>],
+            tags => ?API_TAGS_SINGLE,
             description => <<"Create users for authenticator in global authentication chain">>,
-            parameters => [
-                {listener_id, mk(binary(), #{in => path, desc => <<"Listener ID">>})},
-                {id, mk(binary(), #{in => path, desc => <<"Authenticator ID">>})}
-            ],
+            parameters => [param_auth_id(), param_listener_id()],
             'requestBody' => emqx_dashboard_swagger:schema_with_examples(
                 ref(request_user_create),
                 request_user_create_examples()),
@@ -410,11 +395,10 @@ schema("/listeners/:listener_id/authentication/:id/users") ->
             }
         },
         get => #{
-            tags => [<<"authentication">>, <<"listener">>],
+            tags => ?API_TAGS_SINGLE,
             description => <<"List users in authenticator in listener authentication chain">>,
             parameters => [
-                {listener_id, mk(binary(), #{in => path, desc => <<"Listener ID">>})},
-                {id, mk(binary(), #{in => path, desc => <<"Authenticator ID">>})},
+                param_listener_id(), param_auth_id(),
                 {page, mk(integer(), #{in => query, desc => <<"Page Index">>, nullable => true})},
                 {limit, mk(integer(), #{in => query, desc => <<"Page Limit">>, nullable => true})}
             ],
@@ -432,12 +416,9 @@ schema("/authentication/:id/users/:user_id") ->
     #{
         'operationId' => authenticator_user,
         get => #{
-            tags => [<<"authentication">>, <<"global">>],
+            tags => ?API_TAGS_GLOBAL,
             description => <<"Get user from authenticator in global authentication chain">>,
-            parameters => [
-                {id, mk(binary(), #{in => path, desc => <<"Authenticator ID">>})},
-                {user_id, mk(binary(), #{in => path, desc => <<"User ID">>})}
-            ],
+            parameters => [param_auth_id(), param_user_id()],
             responses => #{
                 200 => emqx_dashboard_swagger:schema_with_examples(
                     ref(response_user),
@@ -446,12 +427,9 @@ schema("/authentication/:id/users/:user_id") ->
             }
         },
         put => #{
-            tags => [<<"authentication">>, <<"global">>],
+            tags => ?API_TAGS_GLOBAL,
             description => <<"Update user in authenticator in global authentication chain">>,
-            parameters => [
-                {id, mk(binary(), #{in => path, desc => <<"Authenticator ID">>})},
-                {user_id, mk(binary(), #{in => path, desc => <<"User ID">>})}
-            ],
+            parameters => [param_auth_id(), param_user_id()],
             'requestBody' => emqx_dashboard_swagger:schema_with_examples(
                 ref(request_user_update),
                 request_user_update_examples()),
@@ -464,12 +442,9 @@ schema("/authentication/:id/users/:user_id") ->
             }
         },
         delete => #{
-            tags => [<<"authentication">>, <<"global">>],
+            tags => ?API_TAGS_GLOBAL,
             description => <<"Update user in authenticator in global authentication chain">>,
-            parameters => [
-                {id, mk(binary(), #{in => path, desc => <<"Authenticator ID">>})},
-                {user_id, mk(binary(), #{in => path, desc => <<"User ID">>})}
-            ],
+            parameters => [param_auth_id(), param_user_id()],
             responses => #{
                 204 => <<"User deleted">>,
                 404 => error_codes([?NOT_FOUND], <<"Not Found">>)
@@ -481,13 +456,9 @@ schema("/listeners/:listener_id/authentication/:id/users/:user_id") ->
     #{
         'operationId' => listener_authenticator_user,
         get => #{
-            tags => [<<"authentication">>, <<"listener">>],
+            tags => ?API_TAGS_SINGLE,
             description => <<"Get user from authenticator in listener authentication chain">>,
-            parameters => [
-                {listener_id, mk(binary(), #{in => path, desc => <<"Listener ID">>})},
-                {id, mk(binary(), #{in => path, desc => <<"Authenticator ID">>})},
-                {user_id, mk(binary(), #{in => path, desc => <<"User ID">>})}
-            ],
+            parameters => [param_listener_id(), param_auth_id(), param_user_id()],
             responses => #{
                 200 => emqx_dashboard_swagger:schema_with_example(
                     ref(response_user),
@@ -496,13 +467,9 @@ schema("/listeners/:listener_id/authentication/:id/users/:user_id") ->
             }
         },
         put => #{
-            tags => [<<"authentication">>, <<"listener">>],
+            tags => ?API_TAGS_SINGLE,
             description => <<"Update user in authenticator in listener authentication chain">>,
-            parameters => [
-                {listener_id, mk(binary(), #{in => path, desc => <<"Listener ID">>})},
-                {id, mk(binary(), #{in => path, desc => <<"Authenticator ID">>})},
-                {user_id, mk(binary(), #{in => path, desc => <<"User ID">>})}
-            ],
+            parameters => [param_listener_id(), param_auth_id(), param_user_id()],
             'requestBody' => emqx_dashboard_swagger:schema_with_example(
                 ref(request_user_update),
                 request_user_update_examples()),
@@ -516,13 +483,9 @@ schema("/listeners/:listener_id/authentication/:id/users/:user_id") ->
 
         },
         delete => #{
-            tags => [<<"authentication">>, <<"listener">>],
+            tags => ?API_TAGS_SINGLE,
             description => <<"Update user in authenticator in listener authentication chain">>,
-            parameters => [
-                {listener_id, mk(binary(), #{in => path, desc => <<"Listener ID">>})},
-                {id, mk(binary(), #{in => path, desc => <<"Authenticator ID">>})},
-                {user_id, mk(binary(), #{in => path, desc => <<"User ID">>})}
-            ],
+            parameters => [param_listener_id(), param_auth_id(), param_user_id()],
             responses => #{
                 204 => <<"User deleted">>,
                 404 => error_codes([?NOT_FOUND], <<"Not Found">>)
@@ -530,6 +493,34 @@ schema("/listeners/:listener_id/authentication/:id/users/:user_id") ->
         }
     }.
 
+param_auth_id() ->
+    {
+        id,
+        mk(binary(), #{
+            in => path,
+            desc => <<"Authenticator ID">>
+        })
+    }.
+
+param_listener_id() ->
+    {
+        listener_id,
+        mk(binary(), #{
+            in => path,
+            desc => <<"Listener ID">>,
+            example => emqx_listeners:id_example()
+        })
+    }.
+
+param_user_id() ->
+    {
+        user_id,
+        mk(binary(), #{
+            in => path,
+            desc => <<"User ID">>
+        })
+    }.
+
 authenticators(post, #{body := Config}) ->
     create_authenticator([authentication], ?GLOBAL, Config);
 
diff --git a/apps/emqx_management/src/emqx_mgmt_api.erl b/apps/emqx_management/src/emqx_mgmt_api.erl
index c032093f7..0f3ecd49b 100644
--- a/apps/emqx_management/src/emqx_mgmt_api.erl
+++ b/apps/emqx_management/src/emqx_mgmt_api.erl
@@ -18,6 +18,8 @@
 
 -include_lib("stdlib/include/qlc.hrl").
 
+-elvis([{elvis_style, dont_repeat_yourself, #{min_complexity => 100}}]).
+
 -define(FRESH_SELECT, fresh_select).
 
 -export([ paginate/3
@@ -35,23 +37,14 @@
 paginate(Tables, Params, {Module, FormatFun}) ->
     Qh = query_handle(Tables),
     Count = count(Tables),
-    Page = b2i(page(Params)),
-    Limit = b2i(limit(Params)),
-    Cursor = qlc:cursor(Qh),
-    case Page > 1 of
-        true  ->
-            _ = qlc:next_answers(Cursor, (Page - 1) * Limit),
-            ok;
-        false -> ok
-    end,
-    Rows = qlc:next_answers(Cursor, Limit),
-    qlc:delete_cursor(Cursor),
-    #{meta  => #{page => Page, limit => Limit, count => Count},
-      data  => [Module:FormatFun(Row) || Row <- Rows]}.
+    do_paginate(Qh, Count, Params, {Module, FormatFun}).
 
 paginate(Tables, MatchSpec, Params, {Module, FormatFun}) ->
     Qh = query_handle(Tables, MatchSpec),
     Count = count(Tables, MatchSpec),
+    do_paginate(Qh, Count, Params, {Module, FormatFun}).
+
+do_paginate(Qh, Count, Params, {Module, FormatFun}) ->
     Page = b2i(page(Params)),
     Limit = b2i(limit(Params)),
     Cursor = qlc:cursor(Qh),
@@ -64,7 +57,7 @@ paginate(Tables, MatchSpec, Params, {Module, FormatFun}) ->
     Rows = qlc:next_answers(Cursor, Limit),
     qlc:delete_cursor(Cursor),
     #{meta  => #{page => Page, limit => Limit, count => Count},
-      data  => [Module:FormatFun(Row) || Row <- Rows]}.
+      data  => [erlang:apply(Module, FormatFun, [Row]) || Row <- Rows]}.
 
 query_handle(Table) when is_atom(Table) ->
     qlc:q([R || R <- ets:table(Table)]);
@@ -95,9 +88,7 @@ count(Table, MatchSpec) when is_atom(Table) ->
     NMatchSpec = [{MatchPattern, Where, [true]}],
     ets:select_count(Table, NMatchSpec);
 count([Table], MatchSpec) when is_atom(Table) ->
-    [{MatchPattern, Where, _Re}] = MatchSpec,
-    NMatchSpec = [{MatchPattern, Where, [true]}],
-    ets:select_count(Table, NMatchSpec);
+    count(Table, MatchSpec);
 count(Tables, MatchSpec) ->
     lists:sum([count(T, MatchSpec) || T <- Tables]).
 
@@ -111,16 +102,23 @@ limit(Params) when is_map(Params) ->
 limit(Params) ->
     proplists:get_value(<<"limit">>, Params, emqx_mgmt:max_row_limit()).
 
+init_meta(Params) ->
+    Limit = b2i(limit(Params)),
+    Page  = b2i(page(Params)),
+    #{
+        page => Page,
+        limit => Limit,
+        count => 0
+    }.
+
 %%--------------------------------------------------------------------
 %% Node Query
 %%--------------------------------------------------------------------
 
 node_query(Node, Params, Tab, QsSchema, QueryFun) ->
     {_CodCnt, Qs} = params2qs(Params, QsSchema),
-    Limit = b2i(limit(Params)),
-    Page  = b2i(page(Params)),
-    Meta = #{page => Page, limit => Limit, count => 0},
-    page_limit_check_query(Meta, {fun do_node_query/5, [Node, Tab, Qs, QueryFun, Meta]}).
+    page_limit_check_query(init_meta(Params),
+                          {fun do_node_query/5, [Node, Tab, Qs, QueryFun, init_meta(Params)]}).
 
 %% @private
 do_node_query(Node, Tab, Qs, QueryFun, Meta) ->
@@ -129,34 +127,15 @@ do_node_query(Node, Tab, Qs, QueryFun, Meta) ->
 do_node_query( Node, Tab, Qs, QueryFun, Continuation
              , Meta = #{limit := Limit}
              , Results) ->
-    {Len, Rows, NContinuation} = do_query(Node, Tab, Qs, QueryFun, Continuation, Limit),
-    case judge_page_with_counting(Len, Meta) of
-        {more, NMeta} ->
-            case NContinuation of
-                ?FRESH_SELECT ->
-                    #{meta => NMeta, data => []}; %% page and limit too big
-                _ ->
-                    do_node_query(Node, Tab, Qs, QueryFun, NContinuation, NMeta, [])
-            end;
-        {cutrows, NMeta} ->
-            {SubStart, NeedNowNum} = rows_sub_params(Len, NMeta),
-            ThisRows = lists:sublist(Rows, SubStart, NeedNowNum),
-            NResults = lists:sublist( lists:append(Results, ThisRows)
-                                    , SubStart, Limit),
-            case NContinuation of
-                ?FRESH_SELECT ->
-                    #{meta => NMeta, data => NResults};
-                _ ->
-                    do_node_query(Node, Tab, Qs, QueryFun, NContinuation, NMeta, NResults)
-            end;
-        {enough, NMeta} ->
-            NResults = lists:sublist(lists:append(Results, Rows), 1, Limit),
-            case NContinuation of
-                ?FRESH_SELECT ->
-                    #{meta => NMeta, data => NResults};
-                _ ->
-                    do_node_query(Node, Tab, Qs, QueryFun, NContinuation, NMeta, NResults)
-            end
+    case do_query(Node, Tab, Qs, QueryFun, Continuation, Limit) of
+        {error, {badrpc, R}} ->
+            {error, Node, {badrpc, R}};
+        {Len, Rows, ?FRESH_SELECT} ->
+            {NMeta, NResults} = sub_query_result(Len, Rows, Limit, Results, Meta),
+            #{meta => NMeta, data => NResults};
+        {Len, Rows, NContinuation} ->
+            {NMeta, NResults} = sub_query_result(Len, Rows, Limit, Results, Meta),
+            do_node_query(Node, Tab, Qs, QueryFun, NContinuation, NMeta, NResults)
     end.
 
 %%--------------------------------------------------------------------
@@ -165,11 +144,9 @@ do_node_query( Node, Tab, Qs, QueryFun, Continuation
 
 cluster_query(Params, Tab, QsSchema, QueryFun) ->
     {_CodCnt, Qs} = params2qs(Params, QsSchema),
-    Limit = b2i(limit(Params)),
-    Page  = b2i(page(Params)),
     Nodes = mria_mnesia:running_nodes(),
-    Meta = #{page => Page, limit => Limit, count => 0},
-    page_limit_check_query(Meta, {fun do_cluster_query/5, [Nodes, Tab, Qs, QueryFun, Meta]}).
+    page_limit_check_query(init_meta(Params),
+                          {fun do_cluster_query/5, [Nodes, Tab, Qs, QueryFun, init_meta(Params)]}).
 
 %% @private
 do_cluster_query(Nodes, Tab, Qs, QueryFun, Meta) ->
@@ -177,37 +154,17 @@ do_cluster_query(Nodes, Tab, Qs, QueryFun, Meta) ->
 
 do_cluster_query([], _Tab, _Qs, _QueryFun, _Continuation, Meta, Results) ->
     #{meta => Meta, data => Results};
-do_cluster_query( [Node | Nodes], Tab, Qs, QueryFun, Continuation
-                , Meta = #{limit := Limit}
-                , Results) ->
-    {Len, Rows, NContinuation} = do_query(Node, Tab, Qs, QueryFun, Continuation, Limit),
-    case judge_page_with_counting(Len, Meta) of
-        {more, NMeta} ->
-            case NContinuation of
-                ?FRESH_SELECT ->
-                    do_cluster_query(Nodes, Tab, Qs, QueryFun, NContinuation, NMeta, []); %% next node with parts of results
-                _ ->
-                    do_cluster_query([Node | Nodes], Tab, Qs, QueryFun, NContinuation, NMeta, []) %% continue this node
-            end;
-        {cutrows, NMeta} ->
-            {SubStart, NeedNowNum} = rows_sub_params(Len, NMeta),
-            ThisRows = lists:sublist(Rows, SubStart, NeedNowNum),
-            NResults = lists:sublist( lists:append(Results, ThisRows)
-                                    , SubStart, Limit),
-            case NContinuation of
-                ?FRESH_SELECT ->
-                    do_cluster_query(Nodes, Tab, Qs, QueryFun, NContinuation, NMeta, NResults); %% next node with parts of results
-                _ ->
-                    do_cluster_query([Node | Nodes], Tab, Qs, QueryFun, NContinuation, NMeta, NResults) %% continue this node
-            end;
-        {enough, NMeta} ->
-            NResults = lists:sublist(lists:append(Results, Rows), 1, Limit),
-            case NContinuation of
-                ?FRESH_SELECT ->
-                    do_cluster_query(Nodes, Tab, Qs, QueryFun, NContinuation, NMeta, NResults); %% next node with parts of results
-                _ ->
-                    do_cluster_query([Node | Nodes], Tab, Qs, QueryFun, NContinuation, NMeta, NResults) %% continue this node
-            end
+do_cluster_query([Node | Tail] = Nodes, Tab, Qs, QueryFun, Continuation,
+        Meta = #{limit := Limit}, Results) ->
+    case do_query(Node, Tab, Qs, QueryFun, Continuation, Limit) of
+        {error, {badrpc, R}} ->
+            {error, Node, {bar_rpc, R}};
+        {Len, Rows, ?FRESH_SELECT} ->
+            {NMeta, NResults} = sub_query_result(Len, Rows, Limit, Results, Meta),
+            do_cluster_query(Tail, Tab, Qs, QueryFun, ?FRESH_SELECT, NMeta, NResults);
+        {Len, Rows, NContinuation} ->
+            {NMeta, NResults} = sub_query_result(Len, Rows, Limit, Results, Meta),
+            do_cluster_query(Nodes, Tab, Qs, QueryFun, NContinuation, NMeta, NResults)
     end.
 
 %%--------------------------------------------------------------------
@@ -216,11 +173,26 @@ do_cluster_query( [Node | Nodes], Tab, Qs, QueryFun, Continuation
 
 %% @private
 do_query(Node, Tab, Qs, {M,F}, Continuation, Limit) when Node =:= node() ->
-    M:F(Tab, Qs, Continuation, Limit);
+    erlang:apply(M, F, [Tab, Qs, Continuation, Limit]);
 do_query(Node, Tab, Qs, QueryFun, Continuation, Limit) ->
     rpc_call(Node, ?MODULE, do_query,
              [Node, Tab, Qs, QueryFun, Continuation, Limit], 50000).
 
+sub_query_result(Len, Rows, Limit, Results, Meta) ->
+    {Flag, NMeta} = judge_page_with_counting(Len, Meta),
+    NResults =
+        case Flag of
+            more ->
+                [];
+            cutrows ->
+                {SubStart, NeedNowNum} = rows_sub_params(Len, NMeta),
+                ThisRows = lists:sublist(Rows, SubStart, NeedNowNum),
+                lists:sublist(lists:append(Results, ThisRows), SubStart, Limit);
+            enough ->
+                lists:sublist(lists:append(Results, Rows), 1, Limit)
+        end,
+    {NMeta, NResults}.
+
 %% @private
 rpc_call(Node, M, F, A, T) ->
     case rpc:call(Node, M, F, A, T) of
@@ -294,16 +266,20 @@ pick_params_to_qs([{Key, Value} | Params], QsSchema, Acc1, Acc2) ->
                                 end,
                     case lists:keytake(OpposeKey, 1, Params) of
                         false ->
-                            pick_params_to_qs(Params, QsSchema, [qs(Key, Value, Type) | Acc1], Acc2);
+                            pick_params_to_qs(Params, QsSchema,
+                                [qs(Key, Value, Type) | Acc1], Acc2);
                         {value, {K2, V2}, NParams} ->
-                            pick_params_to_qs(NParams, QsSchema, [qs(Key, Value, K2, V2, Type) | Acc1], Acc2)
+                            pick_params_to_qs(NParams, QsSchema,
+                                [qs(Key, Value, K2, V2, Type) | Acc1], Acc2)
                     end;
                 _ ->
                     case is_fuzzy_key(Key) of
                         true ->
-                            pick_params_to_qs(Params, QsSchema, Acc1, [qs(Key, Value, Type) | Acc2]);
+                            pick_params_to_qs(Params, QsSchema, Acc1,
+                                [qs(Key, Value, Type) | Acc2]);
                         _ ->
-                            pick_params_to_qs(Params, QsSchema, [qs(Key, Value, Type) | Acc1], Acc2)
+                            pick_params_to_qs(Params, QsSchema,
+                                [qs(Key, Value, Type) | Acc1], Acc2)
 
                     end
             end
@@ -340,10 +316,9 @@ is_fuzzy_key(<<"match_", _/binary>>) ->
 is_fuzzy_key(_) ->
     false.
 
-page_start(Page, Limit) ->
-    if Page > 1 -> (Page-1) * Limit + 1;
-       true -> 1
-    end.
+page_start(1, _) -> 1;
+page_start(Page, Limit) -> (Page-1) * Limit + 1.
+
 
 judge_page_with_counting(Len, Meta = #{page := Page, limit := Limit, count := Count}) ->
     PageStart = page_start(Page, Limit),
@@ -359,11 +334,12 @@ judge_page_with_counting(Len, Meta = #{page := Page, limit := Limit, count := Co
 
 rows_sub_params(Len, _Meta = #{page := Page, limit := Limit, count := Count}) ->
     PageStart = page_start(Page, Limit),
-    if Count - Len < PageStart ->
+    case (Count - Len) < PageStart of
+        true ->
             NeedNowNum = Count - PageStart + 1,
             SubStart   = Len - NeedNowNum + 1,
             {SubStart, NeedNowNum};
-       true ->
+        false ->
             {_SubStart = 1, _NeedNowNum = Len}
     end.
 
diff --git a/apps/emqx_management/src/emqx_mgmt_api_banned.erl b/apps/emqx_management/src/emqx_mgmt_api_banned.erl
index 9c9fbbb31..c9ae1401d 100644
--- a/apps/emqx_management/src/emqx_mgmt_api_banned.erl
+++ b/apps/emqx_management/src/emqx_mgmt_api_banned.erl
@@ -23,7 +23,11 @@
 
 -behaviour(minirest_api).
 
--export([api_spec/0, paths/0, schema/1, fields/1]).
+-export([ api_spec/0
+        , paths/0
+        , schema/1
+        , fields/1]).
+
 -export([format/1]).
 
 -export([ banned/2
@@ -62,7 +66,9 @@ schema("/banned") ->
             description => <<"Create banned">>,
             'requestBody' => hoconsc:mk(hoconsc:ref(ban)),
             responses => #{
-                200 => <<"Create success">>
+                200 => [{data, hoconsc:mk(hoconsc:array(hoconsc:ref(ban)), #{})}],
+                400 => emqx_dashboard_swagger:error_codes(['ALREADY_EXISTED'],
+                                                          <<"Banned already existed">>)
             }
         }
     };
@@ -135,8 +141,12 @@ banned(get, #{query_string := Params}) ->
     Response = emqx_mgmt_api:paginate(?TAB, Params, ?FORMAT_FUN),
     {200, Response};
 banned(post, #{body := Body}) ->
-    _ = emqx_banned:create(emqx_banned:parse(Body)),
-    {200}.
+    case emqx_banned:create(emqx_banned:parse(Body)) of
+        {ok, Banned} ->
+            {200, format(Banned)};
+        {error, {already_exist, Old}} ->
+            {400, #{code => 'ALREADY_EXISTED', message => format(Old)}}
+    end.
 
 delete_banned(delete, #{bindings := Params}) ->
     case emqx_banned:look_up(Params) of
diff --git a/apps/emqx_management/src/emqx_mgmt_api_configs.erl b/apps/emqx_management/src/emqx_mgmt_api_configs.erl
index 48affe996..963db10b7 100644
--- a/apps/emqx_management/src/emqx_mgmt_api_configs.erl
+++ b/apps/emqx_management/src/emqx_mgmt_api_configs.erl
@@ -155,8 +155,20 @@ config_reset(post, _Params, Req) ->
 
 configs(get, Params, _Req) ->
     Node = maps:get(node, Params, node()),
-    Res = rpc:call(Node, ?MODULE, get_full_config, []),
-    {200, Res}.
+    case
+        lists:member(Node, mria_mnesia:running_nodes())
+        andalso
+        rpc:call(Node, ?MODULE, get_full_config, [])
+    of
+        false ->
+            Message = list_to_binary(io_lib:format("Bad node ~p, reason not found", [Node])),
+            {500, #{code => 'BAD_NODE', message => Message}};
+        {error, {badrpc, R}} ->
+            Message = list_to_binary(io_lib:format("Bad node ~p, reason ~p", [Node, R])),
+            {500, #{code => 'BAD_NODE', message => Message}};
+        Res ->
+            {200, Res}
+    end.
 
 conf_path_reset(Req) ->
     <<"/api/v5", ?PREFIX_RESET, Path/binary>> = cowboy_req:path(Req),
diff --git a/apps/emqx_management/src/emqx_mgmt_api_listeners.erl b/apps/emqx_management/src/emqx_mgmt_api_listeners.erl
index 2a871d166..f21b1d8de 100644
--- a/apps/emqx_management/src/emqx_mgmt_api_listeners.erl
+++ b/apps/emqx_management/src/emqx_mgmt_api_listeners.erl
@@ -210,7 +210,7 @@ param_path_id() ->
     #{
         name => id,
         in => path,
-        schema => #{type => string},
+        schema => #{type => string, example => emqx_listeners:id_example()},
         required => true
     }.
 
diff --git a/apps/emqx_management/src/emqx_mgmt_util.erl b/apps/emqx_management/src/emqx_mgmt_util.erl
index b276988bd..cce9276ed 100644
--- a/apps/emqx_management/src/emqx_mgmt_util.erl
+++ b/apps/emqx_management/src/emqx_mgmt_util.erl
@@ -126,7 +126,8 @@ array_schema(Schema, Desc) ->
 object_array_schema(Properties) when is_map(Properties) ->
     json_content_schema(#{type => array, items => #{type => object, properties => Properties}}).
 object_array_schema(Properties, Desc) ->
-    json_content_schema(#{type => array, items => #{type => object, properties => Properties}}, Desc).
+    json_content_schema(#{type => array,
+        items => #{type => object, properties => Properties}}, Desc).
 
 page_schema(Ref) when is_atom(Ref) ->
     page_schema(minirest:ref(atom_to_binary(Ref, utf8)));
@@ -201,7 +202,10 @@ batch_operation(Module, Function, ArgsList) ->
     Failed = batch_operation(Module, Function, ArgsList, []),
     Len = erlang:length(Failed),
     Success = erlang:length(ArgsList) - Len,
-    Fun = fun({Args, Reason}, Detail) -> [#{data => Args, reason => io_lib:format("~p", [Reason])} | Detail] end,
+    Fun =
+        fun({Args, Reason}, Detail) ->
+            [#{data => Args, reason => io_lib:format("~p", [Reason])} | Detail]
+        end,
     #{success => Success, failed => Len, detail => lists:foldl(Fun, [], Failed)}.
 
 batch_operation(_Module, _Function, [], Failed) ->
@@ -218,7 +222,7 @@ properties(Props) ->
     properties(Props, #{}).
 properties([], Acc) ->
     Acc;
-properties([Key| Props], Acc) when is_atom(Key) ->
+properties([Key | Props], Acc) when is_atom(Key) ->
     properties(Props, maps:put(Key, #{type => string}, Acc));
 properties([{Key, Type} | Props], Acc) ->
     properties(Props, maps:put(Key, #{type => Type}, Acc));
@@ -266,6 +270,9 @@ generate_response(QueryResult) ->
     case QueryResult of
         {error, page_limit_invalid} ->
             {400, #{code => <<"INVALID_PARAMETER">>, message => <<"page_limit_invalid">>}};
+        {error, Node, {badrpc, R}} ->
+            Message = list_to_binary(io_lib:format("bad rpc call ~p, Reason ~p", [Node, R])),
+            {500, #{code => <<"NODE_DOWN">>, message => Message}};
         Response ->
             {200, Response}
     end.
diff --git a/apps/emqx_modules/src/emqx_telemetry_api.erl b/apps/emqx_modules/src/emqx_telemetry_api.erl
index 799f192d0..c3e1476bc 100644
--- a/apps/emqx_modules/src/emqx_telemetry_api.erl
+++ b/apps/emqx_modules/src/emqx_telemetry_api.erl
@@ -63,10 +63,12 @@ status_api() ->
             responses => #{<<"200">> => object_schema(Props)}
         },
         put => #{
-            description => "Enable or disbale telemetry",
+            description => "Enable or disable telemetry",
             'requestBody' => object_schema(Props),
             responses => #{
-                <<"200">> => schema(<<"Enable or disbale telemetry successfully">>),
+                <<"200">> =>
+                    object_schema(properties([{enable, boolean, <<"">>}]),
+                        <<"Enable or disable telemetry successfully">>),
                 <<"400">> => bad_request()
             }
         }
@@ -77,10 +79,7 @@ data_api() ->
     Metadata = #{
         get => #{
             responses => #{
-                <<"200">> => object_schema(properties(), <<"Get telemetry data">>)
-            }
-        }
-    },
+                <<"200">> => object_schema(properties(), <<"Get telemetry data">>)}}},
     {"/telemetry/data", Metadata, data}.
 
 %%--------------------------------------------------------------------
@@ -97,10 +96,10 @@ status(put, #{body := Body}) ->
                 true -> <<"Telemetry status is already enabled">>;
                 false -> <<"Telemetry status is already disable">>
             end,
-            {400, #{code => "BAD_REQUEST", message => Reason}};
+            {400, #{code => 'BAD_REQUEST', message => Reason}};
         false ->
             enable_telemetry(Enable),
-             {200}
+            {200, #{<<"enable">> => emqx_telemetry:get_status()}}
     end.
 
 data(get, _Request) ->