diff --git a/auth/index.js b/auth/index.js
index 3ad2700..2a95d28 100644
--- a/auth/index.js
+++ b/auth/index.js
@@ -3,25 +3,14 @@
 const crypto = require('crypto');
 const Redis = require('ioredis');
 
-function AuthToken(redisOpt) {
-  if (!(this instanceof AuthToken)) {
-    return new AuthToken(redisOpt);
-  }
-
-  if (!redisOpt) {
-    throw 'AuthToken: need redis config.';
-  }
-  
-  this.tokenDB = new Redis(redisOpt);
-  this.tokenDB.on("connect",function(){
-    console.log("AuthToken: ioredis connected: " + JSON.stringify(redisOpt));
-  });
+function AuthToken(redisdb) {  
+  this.tokenDB = redisdb;
 }
 
 AuthToken.prototype.genToken = async function(userData, expiresSeconds) {
   // 生成系统内部的user token
   let hash = crypto.createHash('md5');
-  hash.update(JSON.stringify(userData));
+  hash.update(JSON.stringify(userData) + Date());
   let userToken = hash.digest('hex');
 
   // 缓存到redis
@@ -109,4 +98,10 @@ AuthToken.prototype.getTokenData = async function (userToken) {
   return tokenData;
 };
 
-module.exports = AuthToken;
+let tokenInstance = null;
+module.exports = function getTokenInstance(redisPort, redisHost, db) {
+  if (!tokenInstance) {
+    tokenInstance = new AuthToken(redisPort, redisHost, db);
+  }
+  return tokenInstance;
+};
diff --git a/auth/package.json b/auth/package.json
index 781914f..9485b1f 100644
--- a/auth/package.json
+++ b/auth/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@ehason/auth",
-  "version": "1.0.2",
+  "version": "1.2.2",
   "description": "User auth lib",
   "main": "index.js",
   "scripts": {
diff --git a/utils/impl/koaresp.js b/utils/impl/koaresp.js
new file mode 100644
index 0000000..3b37361
--- /dev/null
+++ b/utils/impl/koaresp.js
@@ -0,0 +1,15 @@
+'use strict';
+
+function ctxresp(ctx, data, errno, errmsg) {
+    if (errno === null || errno === undefined) errno = 0;
+    if (errmsg === null || errmsg === undefined) errmsg = '';
+    if (data === null || data === undefined) data = {};
+
+    ctx.body = {
+        result: errno === 0 ? 'ok' : 'fail',
+        error: { code: errno, msg: errmsg },
+        data: data
+    };
+}
+
+module.exports = ctxresp;
diff --git a/utils/index.js b/utils/index.js
index 2a4f21c..47d7597 100644
--- a/utils/index.js
+++ b/utils/index.js
@@ -1,4 +1,5 @@
 
 module.exports = {
-  prxrmq: require('./impl/prxrmq')
+  prxrmq: require('./impl/prxrmq'),
+  ctxresp: require('./impl/koaresp')
 };
diff --git a/utils/package.json b/utils/package.json
index 1ac9593..4c0f354 100644
--- a/utils/package.json
+++ b/utils/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@ehason/utils",
-  "version": "1.0.1",
+  "version": "1.0.2",
   "description": "Utils for ehason develope",
   "main": "index.js",
   "scripts": {