diff --git a/apps/emqx_management/src/emqx_mgmt.erl b/apps/emqx_management/src/emqx_mgmt.erl
index 31436b9a0..27a3d8b69 100644
--- a/apps/emqx_management/src/emqx_mgmt.erl
+++ b/apps/emqx_management/src/emqx_mgmt.erl
@@ -66,13 +66,8 @@
 
 %% Subscriptions
 -export([
-    list_subscriptions/1,
     list_subscriptions_via_topic/2,
-    list_subscriptions_via_topic/3,
-    lookup_subscriptions/1,
-    lookup_subscriptions/2,
-
-    do_list_subscriptions/0
+    list_subscriptions_via_topic/3
 ]).
 
 %% PubSub
@@ -400,21 +395,6 @@ call_client(Node, ClientId, Req) ->
 %% Subscriptions
 %%--------------------------------------------------------------------
 
--spec do_list_subscriptions() -> [map()].
-do_list_subscriptions() ->
-    case check_max_table_size([mqtt_subproperty]) of
-        false ->
-            throw(max_row_limit);
-        true ->
-            [
-                #{topic => Topic, clientid => ClientId, options => Options}
-             || {{Topic, ClientId}, Options} <- ets:tab2list(mqtt_subproperty)
-            ]
-    end.
-
-list_subscriptions(Node) ->
-    unwrap_rpc(emqx_management_proto_v3:list_subscriptions(Node)).
-
 list_subscriptions_via_topic(Topic, FormatFun) ->
     lists:append([
         list_subscriptions_via_topic(Node, Topic, FormatFun)
@@ -427,12 +407,6 @@ list_subscriptions_via_topic(Node, Topic, _FormatFun = {M, F}) ->
         Result -> M:F(Result)
     end.
 
-lookup_subscriptions(ClientId) ->
-    lists:append([lookup_subscriptions(Node, ClientId) || Node <- mria_mnesia:running_nodes()]).
-
-lookup_subscriptions(Node, ClientId) ->
-    unwrap_rpc(emqx_broker_proto_v1:list_client_subscriptions(Node, ClientId)).
-
 %%--------------------------------------------------------------------
 %% PubSub
 %%--------------------------------------------------------------------
@@ -568,17 +542,6 @@ unwrap_rpc(Res) ->
 otp_rel() ->
     iolist_to_binary([emqx_vm:get_otp_version(), "/", erlang:system_info(version)]).
 
-check_max_table_size(Tables) ->
-    check_max_table_size(Tables, ?MAX_TABLE_SIZE).
-
-check_max_table_size([], _Limit) ->
-    true;
-check_max_table_size([Tab | Tables], Limit) ->
-    case table_size(Tab) > Limit of
-        true -> false;
-        false -> check_max_table_size(Tables, Limit)
-    end.
-
 check_results(Results) ->
     case lists:any(fun(Item) -> Item =:= ok end, Results) of
         true -> ok;
@@ -587,5 +550,3 @@ check_results(Results) ->
 
 default_row_limit() ->
     ?DEFAULT_ROW_LIMIT.
-
-table_size(Tab) -> ets:info(Tab, size).
diff --git a/apps/emqx_management/test/emqx_mgmt_SUITE.erl b/apps/emqx_management/test/emqx_mgmt_SUITE.erl
index a9379da8c..f5f3acd53 100644
--- a/apps/emqx_management/test/emqx_mgmt_SUITE.erl
+++ b/apps/emqx_management/test/emqx_mgmt_SUITE.erl
@@ -166,6 +166,77 @@ t_list_client_subscriptions(Config) ->
     ?assertMatch({_, [{<<"t/#">>, _Opts}]}, emqx_mgmt:list_client_subscriptions(<<"client1">>)),
     ?assertEqual({error, not_found}, emqx_mgmt:list_client_subscriptions(<<"notfound">>)).
 
+t_clean_cache(init, Config) ->
+    setup_clients(Config);
+t_clean_cache('end', Config) ->
+    disconnect_clients(Config).
+
+t_clean_cache(_Config) ->
+    ?assertNotMatch(
+        {error, _},
+        emqx_mgmt:clean_authz_cache(<<"client1">>)
+    ),
+    ?assertNotMatch(
+        {error, _},
+        emqx_mgmt:clean_authz_cache_all()
+    ),
+    ?assertNotMatch(
+        {error, _},
+        emqx_mgmt:clean_pem_cache_all()
+    ).
+
+t_set_client_props(init, Config) ->
+    setup_clients(Config);
+t_set_client_props('end', Config) ->
+    disconnect_clients(Config).
+
+t_set_client_props(_Config) ->
+    ?assertEqual(
+        % [FIXME] not implemented at this point?
+        ignored,
+        emqx_mgmt:set_ratelimit_policy(<<"client1">>, foo)
+    ),
+    ?assertEqual(
+        {error, not_found},
+        emqx_mgmt:set_ratelimit_policy(<<"notfound">>, foo)
+    ),
+    ?assertEqual(
+        % [FIXME] not implemented at this point?
+        ignored,
+        emqx_mgmt:set_quota_policy(<<"client1">>, foo)
+    ),
+    ?assertEqual(
+        {error, not_found},
+        emqx_mgmt:set_quota_policy(<<"notfound">>, foo)
+    ),
+    ?assertEqual(
+        ok,
+        emqx_mgmt:set_keepalive(<<"client1">>, 3600)
+    ),
+    ?assertMatch(
+        {error, _},
+        emqx_mgmt:set_keepalive(<<"client1">>, true)
+    ),
+    ?assertEqual(
+        {error, not_found},
+        emqx_mgmt:set_keepalive(<<"notfound">>, 3600)
+    ),
+    ok.
+
+t_list_subscriptions_via_topic(init, Config) ->
+    setup_clients(Config);
+t_list_subscriptions_via_topic('end', Config) ->
+    disconnect_clients(Config).
+
+t_list_subscriptions_via_topic(Config) ->
+    [Client | _] = ?config(clients, Config),
+    ?assertEqual([], emqx_mgmt:list_subscriptions_via_topic(<<"t/#">>, ?FORMATFUN)),
+    emqtt:subscribe(Client, <<"t/#">>),
+    ?assertMatch(
+        [{{<<"t/#">>, _SubPid}, _Opts}],
+        emqx_mgmt:list_subscriptions_via_topic(<<"t/#">>, ?FORMATFUN)
+    ).
+
 %%% helpers
 ident(Arg) ->
     Arg.
diff --git a/apps/emqx_management/test/emqx_mgmt_api_clients_SUITE.erl b/apps/emqx_management/test/emqx_mgmt_api_clients_SUITE.erl
index b2f3f5655..9f26f8542 100644
--- a/apps/emqx_management/test/emqx_mgmt_api_clients_SUITE.erl
+++ b/apps/emqx_management/test/emqx_mgmt_api_clients_SUITE.erl
@@ -114,7 +114,7 @@ t_clients(_) ->
         SubscribeBody
     ),
     timer:sleep(100),
-    [{AfterSubTopic, #{qos := AfterSubQos}}] = emqx_mgmt:lookup_subscriptions(ClientId1),
+    {_, [{AfterSubTopic, #{qos := AfterSubQos}}]} = emqx_mgmt:list_client_subscriptions(ClientId1),
     ?assertEqual(AfterSubTopic, Topic),
     ?assertEqual(AfterSubQos, Qos),
 
@@ -159,7 +159,7 @@ t_clients(_) ->
         UnSubscribeBody
     ),
     timer:sleep(100),
-    ?assertEqual([], emqx_mgmt:lookup_subscriptions(Client1)),
+    ?assertEqual([], emqx_mgmt:list_client_subscriptions(ClientId1)),
 
     %% testcase cleanup, kickout client1
     {ok, _} = emqx_mgmt_api_test_util:request_api(delete, Client1Path),