diff --git a/src/com/zdemo/zhub/Rpc.java b/src/com/zdemo/zhub/Rpc.java
index 0eff756..d251223 100644
--- a/src/com/zdemo/zhub/Rpc.java
+++ b/src/com/zdemo/zhub/Rpc.java
@@ -2,6 +2,7 @@ package com.zdemo.zhub;
 
 import org.redkale.convert.ConvertColumn;
 import org.redkale.convert.json.JsonConvert;
+import org.redkale.service.RetResult;
 
 public class Rpc<T> {
     private String ruk;     // request unique key:
@@ -13,7 +14,7 @@ public class Rpc<T> {
     public Rpc() {
     }
 
-    public Rpc(String appname, String ruk, String topic, Object value) {
+    protected Rpc(String appname, String ruk, String topic, Object value) {
         this.ruk = appname + "::" + ruk;
         this.topic = topic;
         this.value = (T) JsonConvert.root().convertTo(value);
@@ -57,12 +58,14 @@ public class Rpc<T> {
         return ruk.split("::")[0];
     }
 
+    @Deprecated(since = "2023.04.15")
     public <R> RpcResult<R> buildResp() {
         RpcResult<R> response = new RpcResult<>();
         response.setRuk(ruk);
         return response;
     }
 
+    @Deprecated(since = "2023.04.15")
     public <R> RpcResult<R> buildResp(int retcode, String retinfo) {
         RpcResult<R> response = new RpcResult<>();
         response.setRuk(ruk);
@@ -71,6 +74,7 @@ public class Rpc<T> {
         return response;
     }
 
+    @Deprecated(since = "2023.04.15")
     public <R> RpcResult<R> buildError(String retinfo) {
         RpcResult<R> response = new RpcResult<>();
         response.setRuk(ruk);
@@ -79,10 +83,50 @@ public class Rpc<T> {
         return response;
     }
 
+    @Deprecated(since = "2023.04.15")
     public <R> RpcResult<R> buildResp(R result) {
         RpcResult<R> response = new RpcResult<>();
         response.setRuk(ruk);
         response.setResult(result);
         return response;
     }
+
+    public <R> RpcResult<R> render() {
+        RpcResult<R> response = new RpcResult<>();
+        response.setRuk(ruk);
+        return response;
+    }
+
+    public RpcResult render(RetResult result) {
+        RpcResult resp = new RpcResult<>();
+        resp.setRuk(ruk);
+        resp.setRetcode(result.getRetcode());
+        resp.setRetinfo(result.getRetinfo());
+        resp.setResult(result.getResult());
+        return resp;
+    }
+
+    public <R> RpcResult<R> render(R result) {
+        RpcResult<R> response = new RpcResult<>();
+        response.setRuk(ruk);
+        response.setResult(result);
+        return response;
+    }
+
+    public <R> RpcResult<R> retError(String retinfo) {
+        RpcResult<R> response = new RpcResult<>();
+        response.setRuk(ruk);
+        response.setRetcode(100);
+        response.setRetinfo(retinfo);
+        return response;
+    }
+
+    public <R> RpcResult<R> retError(int retcode, String retinfo) {
+        RpcResult<R> response = new RpcResult<>();
+        response.setRuk(ruk);
+        response.setRetcode(retcode);
+        response.setRetinfo(retinfo);
+        return response;
+    }
+
 }
diff --git a/src/com/zdemo/zhub/ZHubClient.java b/src/com/zdemo/zhub/ZHubClient.java
index ca7b1fb..9a30e65 100644
--- a/src/com/zdemo/zhub/ZHubClient.java
+++ b/src/com/zdemo/zhub/ZHubClient.java
@@ -504,6 +504,7 @@ public class ZHubClient extends AbstractConsumer implements IConsumer, IProducer
         send("timer", name);
     }
 
+    @Deprecated
     public void reloadTimer() {
         send("cmd", "reload-timer");
     }