diff --git a/src/main/java/org/redkale/mq/HttpResultCoder.java b/src/main/java/org/redkale/mq/HttpResultCoder.java
index b6a4f95f2..66df18a82 100644
--- a/src/main/java/org/redkale/mq/HttpResultCoder.java
+++ b/src/main/java/org/redkale/mq/HttpResultCoder.java
@@ -88,7 +88,7 @@ public class HttpResultCoder implements MessageCoder<HttpResult> {
         ByteBuffer buffer = ByteBuffer.wrap(data);
         HttpResult result = new HttpResult();
         result.setStatus(buffer.getInt());
-        result.setContentType(MessageCoder.getShortString(buffer));
+        result.setContentType(MessageCoder.getSmallString(buffer));
         result.setHeaders(MessageCoder.getMap(buffer));
         result.setCookies(getCookieList(buffer));
         int len = buffer.getInt();
@@ -117,11 +117,11 @@ public class HttpResultCoder implements MessageCoder<HttpResult> {
         final ByteBuffer buffer = ByteBuffer.wrap(bs);
         buffer.putChar((char) list.size());
         list.forEach(cookie -> {
-            putShortString(buffer, cookie.getName());
-            putShortString(buffer, cookie.getValue());
-            putShortString(buffer, cookie.getDomain());
-            putShortString(buffer, cookie.getPath());
-            putShortString(buffer, cookie.getPortlist());
+            putSmallString(buffer, cookie.getName());
+            putSmallString(buffer, cookie.getValue());
+            putSmallString(buffer, cookie.getDomain());
+            putSmallString(buffer, cookie.getPath());
+            putSmallString(buffer, cookie.getPortlist());
             buffer.putLong(cookie.getMaxAge());
             buffer.put(cookie.getSecure() ? (byte) 1 : (byte) 0);
             buffer.put(cookie.isHttpOnly() ? (byte) 1 : (byte) 0);
@@ -136,10 +136,10 @@ public class HttpResultCoder implements MessageCoder<HttpResult> {
         }
         final List<HttpCookie> list = new ArrayList<>(len);
         for (int i = 0; i < len; i++) {
-            HttpCookie cookie = new HttpCookie(getShortString(buffer), getShortString(buffer));
-            cookie.setDomain(getShortString(buffer));
-            cookie.setPath(getShortString(buffer));
-            cookie.setPortlist(getShortString(buffer));
+            HttpCookie cookie = new HttpCookie(getSmallString(buffer), getSmallString(buffer));
+            cookie.setDomain(getSmallString(buffer));
+            cookie.setPath(getSmallString(buffer));
+            cookie.setPortlist(getSmallString(buffer));
             cookie.setMaxAge(buffer.getLong());
             cookie.setSecure(buffer.get() == 1);
             cookie.setHttpOnly(buffer.get() == 1);
diff --git a/src/main/java/org/redkale/mq/HttpSimpleRequestCoder.java b/src/main/java/org/redkale/mq/HttpSimpleRequestCoder.java
index 0ab50854d..c0a95495a 100644
--- a/src/main/java/org/redkale/mq/HttpSimpleRequestCoder.java
+++ b/src/main/java/org/redkale/mq/HttpSimpleRequestCoder.java
@@ -117,12 +117,12 @@ public class HttpSimpleRequestCoder implements MessageCoder<HttpSimpleRequest> {
         if (respformat != 0) {
             req.setRespConvertType(ConvertType.find(respformat));
         }
-        req.setTraceid(MessageCoder.getShortString(buffer));
-        req.setRequestURI(MessageCoder.getLongString(buffer));
-        req.setPath(MessageCoder.getShortString(buffer));
-        req.setRemoteAddr(MessageCoder.getShortString(buffer));
-        req.setSessionid(MessageCoder.getShortString(buffer));
-        req.setContentType(MessageCoder.getShortString(buffer));
+        req.setTraceid(MessageCoder.getSmallString(buffer));
+        req.setRequestURI(MessageCoder.getBigString(buffer));
+        req.setPath(MessageCoder.getSmallString(buffer));
+        req.setRemoteAddr(MessageCoder.getSmallString(buffer));
+        req.setSessionid(MessageCoder.getSmallString(buffer));
+        req.setContentType(MessageCoder.getSmallString(buffer));
         req.setCurrentUserid(MessageCoder.decodeUserid(buffer));
         req.setHeaders(MessageCoder.getMap(buffer));
         req.setParams(MessageCoder.getMap(buffer));
diff --git a/src/main/java/org/redkale/mq/MessageCoder.java b/src/main/java/org/redkale/mq/MessageCoder.java
index c798c59f8..9371bc17c 100644
--- a/src/main/java/org/redkale/mq/MessageCoder.java
+++ b/src/main/java/org/redkale/mq/MessageCoder.java
@@ -6,6 +6,7 @@
 package org.redkale.mq;
 
 import java.io.Serializable;
+import java.math.BigInteger;
 import java.nio.ByteBuffer;
 import java.nio.charset.StandardCharsets;
 import java.util.*;
@@ -36,7 +37,7 @@ public interface MessageCoder<T> {
     //消息内容的类型
     public byte ctype();
 
-    //type: 1:string, 2:int, 3:long
+    //type: 1:string, 2:int, 3:long, 4:BigInteger
     public static byte[] encodeUserid(Serializable value) {
         if (value == null) {
             return MessageRecord.EMPTY_BYTES;
@@ -48,6 +49,9 @@ public interface MessageCoder<T> {
             long val = (Long) value;
             return new byte[]{(byte) 3, (byte) (val >> 56 & 0xFF), (byte) (val >> 48 & 0xFF), (byte) (val >> 40 & 0xFF),
                 (byte) (val >> 32 & 0xFF), (byte) (val >> 24 & 0xFF), (byte) (val >> 16 & 0xFF), (byte) (val >> 8 & 0xFF), (byte) (val & 0xFF)};
+        } else if (value instanceof BigInteger) {
+            BigInteger val = (BigInteger) value;
+            return Utility.append(new byte[]{4}, val.toByteArray());
         }
         String str = value.toString();
         if (str.isEmpty()) {
@@ -71,6 +75,9 @@ public interface MessageCoder<T> {
         }
         byte[] bs = new byte[len - 1];
         buffer.get(bs);
+        if (type == 4) {
+            return new BigInteger(bs);
+        }
         return new String(bs, StandardCharsets.UTF_8);
     }
 
@@ -101,13 +108,13 @@ public interface MessageCoder<T> {
         final ByteBuffer buffer = ByteBuffer.wrap(bs);
         buffer.putChar((char) map.size());
         map.forEach((key, value) -> {
-            putShortString(buffer, key);
-            putLongString(buffer, value);
+            putSmallString(buffer, key);
+            putBigString(buffer, value);
         });
         return bs;
     }
 
-    public static void putLongString(ByteBuffer buffer, String value) {
+    public static void putBigString(ByteBuffer buffer, String value) {
         if (value == null || value.isEmpty()) {
             buffer.putInt(0);
         } else {
@@ -117,7 +124,7 @@ public interface MessageCoder<T> {
         }
     }
 
-    public static String getLongString(ByteBuffer buffer) {
+    public static String getBigString(ByteBuffer buffer) {
         int len = buffer.getInt();
         if (len == 0) {
             return null;
@@ -127,7 +134,8 @@ public interface MessageCoder<T> {
         return new String(bs, StandardCharsets.UTF_8);
     }
 
-    public static void putShortString(ByteBuffer buffer, String value) {
+    //一般用于存放类名、字段名、map中的key
+    public static void putSmallString(ByteBuffer buffer, String value) {
         if (value == null || value.isEmpty()) {
             buffer.putChar((char) 0);
         } else {
@@ -137,7 +145,7 @@ public interface MessageCoder<T> {
         }
     }
 
-    public static String getShortString(ByteBuffer buffer) {
+    public static String getSmallString(ByteBuffer buffer) {
         int len = buffer.getChar();
         if (len == 0) {
             return null;
@@ -154,7 +162,7 @@ public interface MessageCoder<T> {
         }
         Map<String, String> map = new HashMap<>(len);
         for (int i = 0; i < len; i++) {
-            map.put(getShortString(buffer), getLongString(buffer));
+            map.put(getSmallString(buffer), getBigString(buffer));
         }
         return map;
     }
diff --git a/src/main/java/org/redkale/mq/MessageRecordSerializer.java b/src/main/java/org/redkale/mq/MessageRecordSerializer.java
index c218174b9..1c37f2cff 100644
--- a/src/main/java/org/redkale/mq/MessageRecordSerializer.java
+++ b/src/main/java/org/redkale/mq/MessageRecordSerializer.java
@@ -108,10 +108,10 @@ public class MessageRecordSerializer implements MessageCoder<MessageRecord> {
         long createTime = buffer.getLong();
 
         Serializable userid = MessageCoder.decodeUserid(buffer);
-        String groupid = MessageCoder.getShortString(buffer);
-        String topic = MessageCoder.getShortString(buffer);
-        String respTopic = MessageCoder.getShortString(buffer);
-        String traceid = MessageCoder.getShortString(buffer);
+        String groupid = MessageCoder.getSmallString(buffer);
+        String topic = MessageCoder.getSmallString(buffer);
+        String respTopic = MessageCoder.getSmallString(buffer);
+        String traceid = MessageCoder.getSmallString(buffer);
 
         byte[] content = null;
         int contentlen = buffer.getInt();