diff --git a/priv/emqx.schema b/priv/emqx.schema
index 7b924b4e3..e0cba4a9e 100644
--- a/priv/emqx.schema
+++ b/priv/emqx.schema
@@ -2031,9 +2031,11 @@ end}.
 %% key:   mnesia translational updates with per-key locks. recommended for single node setup.
 %% tab:   mnesia translational updates with table lock. recommended for multi-nodes setup.
 %% global: global lock protected updates. recommended for larger cluster.
+%% spawn: same as `key', but transaction is done in another proc, ideal for handling bursty traffic.
+%%
 {mapping, "broker.perf.route_lock_type", "emqx.route_lock_type", [
   {default, key},
-  {datatype, {enum, [key, tab, global]}}
+  {datatype, {enum, [key, tab, global, spawn]}}
 ]}.
 
 %%--------------------------------------------------------------------
diff --git a/src/emqx_router.erl b/src/emqx_router.erl
index f3f878794..15fa32d8e 100644
--- a/src/emqx_router.erl
+++ b/src/emqx_router.erl
@@ -264,7 +264,25 @@ maybe_trans(Fun, Args) ->
             trans(fun() ->
                           emqx_trie:lock_tables(),
                           apply(Fun, Args)
-                  end, [])
+                  end, []);
+        spawn ->
+            %% trigger selective receive optimization of compiler,
+            %% ideal for handling busty traffic.
+            Ref = erlang:make_ref(),
+            Owner = self(),
+            {WPid, RefMon} = spawn_monitor(fun() ->
+                                                Res = trans(Fun, Args),
+                                                Owner ! {Ref, Res}
+                                        end),
+            receive
+                {Ref, TransRes} ->
+                    receive
+                        {'DOWN', RefMon, process, WPid, normal} -> ok
+                    end,
+                    TransRes;
+                {'DOWN', RefMon, process, WPid, _Info} ->
+                    {error, trans_crash}
+            end
     end.
 
 -spec(trans(function(), list(any())) -> ok | {error, term()}).