diff --git a/src/dubbo_cluster_failfast.erl b/src/dubbo_cluster_failfast.erl
index e6f6e8b..4d3b462 100644
--- a/src/dubbo_cluster_failfast.erl
+++ b/src/dubbo_cluster_failfast.erl
@@ -31,7 +31,7 @@
 %%            case dubbo_traffic_control:check_goon(HostFlag, 199) of
 %%                ok ->
 %%
-%%%%                    Request2 = merge_attachments(Request, RpcContext), %% @todo need add rpc context to attachment
+
 %%
 %%%%                    {ok, RequestData} = dubbo_codec:encode_request(Request2),
 %%%%                    Ref = get_ref(RequestState),
diff --git a/src/dubbo_exchanger.erl b/src/dubbo_exchanger.erl
index 6fb8496..3facad4 100644
--- a/src/dubbo_exchanger.erl
+++ b/src/dubbo_exchanger.erl
@@ -27,8 +27,5 @@
     logger:info("start provider ~p pid info ~p~n", [HostFlag, Pid]),
     {ok, #connection_info{pid = Pid, weight = get_weight(ProviderConfig), host_flag = HostFlag}}.
 
-
-
 get_weight(_ProviderConfig) ->
-    %% todo get weight from provider info
-    30.
\ No newline at end of file
+    100.
\ No newline at end of file
diff --git a/src/dubbo_reference_config.erl b/src/dubbo_reference_config.erl
index 2465831..408b34e 100644
--- a/src/dubbo_reference_config.erl
+++ b/src/dubbo_reference_config.erl
@@ -40,11 +40,7 @@
     ok = dubbo_extension:run_fold(protocol_wapper, refer, [Url], ok),
     ok.
 
-%%application=hello-world&dubbo=2.0.2&pid=68901&refer=application=hello-world&default.check=false&default.lazy=false&default.retries=0&default.sticky=false&default.timeout=300000&dubbo=2.0.2&interface=org.apache.dubbo.erlang.sample.service.facade.UserOperator&lazy=false&methods=queryUserInfo,queryUserList,genUserId,getUserInfo&pid=68901&register.ip=127.0.0.1&release=2.7.1&retries=0&side=consumer&sticky=false&timestamp=1559727789953&registry=zookeeper&release=2.7.1&timestamp=1559727842451
-
-
 gen_registry_url(Para) ->
-    %%todo 组装para & url
     {Host, Port} = dubbo_registry:get_registry_host_port(),
     UrlInfo = #dubbo_url{
         scheme = <<"registry">>,
@@ -54,9 +50,6 @@
         parameters = Para
     },
     dubbo_common_fun:url_to_binary(UrlInfo).
-%%    Url = "registry://127.0.0.1:2181/org.apache.dubbo.registry.RegistryService?application=hello-world&dubbo=2.0.2&pid=68901&refer=application%3Dhello-world%26default.check%3Dfalse%26default.lazy%3Dfalse%26default.retries%3D0%26default.sticky%3Dfalse%26default.timeout%3D300000%26dubbo%3D2.0.2%26interface%3Dorg.apache.dubbo.erlang.sample.service.facade.UserOperator%26lazy%3Dfalse%26methods%3DqueryUserInfo%2CqueryUserList%2CgenUserId%2CgetUserInfo%26pid%3D68901%26register.ip%3D127.0.0.1%26release%3D2.7.1%26retries%3D0%26side%3Dconsumer%26sticky%3Dfalse%26timestamp%3D1559727789953&registry=zookeeper&release=2.7.1&timestamp=1559727842451",
-%%    Url.
-
 
 gen_parameter(ConsumerInfo) ->
     Para = #{
diff --git a/src/dubbo_registry_zookeeper.erl b/src/dubbo_registry_zookeeper.erl
index 632abb0..cdef3d9 100644
--- a/src/dubbo_registry_zookeeper.erl
+++ b/src/dubbo_registry_zookeeper.erl
@@ -235,7 +235,6 @@
             ok
     catch
         _Error:Reason ->
-            %%todo improve error type
             {error, Reason}
     end.
 
@@ -255,20 +254,6 @@
         {monitor, self()}]),
     {ok, Pid}.
 
-add_consumer(InterfaceName, ConsumerUrl, State) ->
-    Pid = State#state.zk_pid,
-    ConsumerNode2 = list_to_binary(edoc_lib:escape_uri(binary_to_list(ConsumerUrl))),
-    check_and_create_path(Pid, <<"">>, [{<<"dubbo">>, p}, {InterfaceName, p}, {<<"consumers">>, p}, {ConsumerNode2, e}]),
-    %% todo
-%%    get_provider_list(Consumer, State),
-    ok.
-register_provider_path(Provider, State) ->
-    #state{zk_pid = Pid} = State,
-    ProviderNode = dubbo_node_config_util:gen_provider_info(Provider),
-    check_and_create_path(Pid, <<"">>, [{<<"dubbo">>, p}, {Provider#provider_config.interface, p}, {<<"providers">>, p}, {ProviderNode, e}]),
-    ok.
-
-
 get_provider_list(InterfaceName, ZkPid) ->
     InterfacePath = <<<<"/dubbo/">>/binary, InterfaceName/binary, <<"/providers">>/binary>>,
     ChildList = get_provider_and_start(ZkPid, InterfaceName, InterfacePath),
diff --git a/src/dubboerl_sup.erl b/src/dubboerl_sup.erl
index 62e9982..b394e92 100644
--- a/src/dubboerl_sup.erl
+++ b/src/dubboerl_sup.erl
@@ -41,10 +41,7 @@
 %% Child :: {Id,StartFunc,Restart,Shutdown,Type,Modules}
 init([]) ->
     dubboerl_app:env_init(),
-    %% @todo registry need move registry sup
-%%    ZK = {dubbo_registry_zookeeper, {dubbo_registry_zookeeper, start_link, []}, transient, 5000, worker, [dubbo_registry_zookeeper]},
     RegistrySup = {dubbo_registry_sup, {dubbo_registry_sup, start_link, []}, transient, 5000, supervisor, [dubbo_registry_sup]},
-
     ExtensionSer = {dubbo_extension, {dubbo_extension, start_link, []}, transient, 5000, worker, [dubbo_extension]},
     Id_count = {dubbo_id_generator, {dubbo_id_generator, start_link, []}, transient, 5000, worker, [dubbo_id_generator]},
     ProviderPoolSup = {dubbo_provider_worker_sup, {dubbo_provider_worker_sup, start_link, []}, transient, 5000, supervisor, [dubbo_provider_worker_sup]},