fix(limiter): change limiter log level to debug

apps/emqx/src/emqx_connection.erl

@@ -956,7 +956,7 @@ check_limiter(
                 {ok, Limiter2} ->
                     WhenOk(Data, Msgs, State#state{limiter = Limiter2});
                 {pause, Time, Limiter2} ->
-                    ?SLOG(warning, #{
+                    ?SLOG(debug, #{
                         msg => "pause_time_dueto_rate_limit",
                         needs => Needs,
                         time_in_ms => Time
@@ -1006,7 +1006,7 @@ retry_limiter(#state{limiter = Limiter} = State) ->
                 }
             );
         {pause, Time, Limiter2} ->
-            ?SLOG(warning, #{
+            ?SLOG(debug, #{
                 msg => "pause_time_dueto_rate_limit",
                 types => Types,
                 time_in_ms => Time

apps/emqx/src/emqx_ws_connection.erl

@@ -586,7 +586,7 @@ check_limiter(
                 {ok, Limiter2} ->
                     WhenOk(Data, Msgs, State#state{limiter = Limiter2});
                 {pause, Time, Limiter2} ->
-                    ?SLOG(warning, #{
+                    ?SLOG(debug, #{
                         msg => "pause_time_due_to_rate_limit",
                         needs => Needs,
                         time_in_ms => Time
@@ -634,7 +634,7 @@ retry_limiter(#state{limiter = Limiter} = State) ->
                 }
             );
         {pause, Time, Limiter2} ->
-            ?SLOG(warning, #{
+            ?SLOG(debug, #{
                 msg => "pause_time_due_to_rate_limit",
                 types => Types,
                 time_in_ms => Time

apps/emqx_retainer/src/emqx_retainer_dispatcher.erl

@@ -277,7 +277,7 @@ do_deliver(Msgs, DeliverNum, Pid, Topic, Limiter) ->
             do_deliver(ToDelivers, Pid, Topic),
             do_deliver(Msgs2, DeliverNum, Pid, Topic, Limiter2);
         {drop, _} = Drop ->
-            ?SLOG(error, #{
+            ?SLOG(debug, #{
                 msg => "retained_message_dropped",
                 reason => "reached_ratelimit",
                 dropped_count => length(ToDelivers)