diff --git a/Godeps/Godeps.json b/Godeps/Godeps.json
index 9476f6d..8fa4383 100644
--- a/Godeps/Godeps.json
+++ b/Godeps/Godeps.json
@@ -109,7 +109,7 @@
 		},
 		{
 			"ImportPath": "github.com/zr-hebo/util-db",
-			"Rev": "3ff29f916f7b712b3adc53c4b9b19b13b8bbed87"
+			"Rev": "06948bca5665b2d80078f9ff5c015eabb43c54f8"
 		},
 		{
 			"ImportPath": "github.com/zr-hebo/util-http",
diff --git a/model/mysql_query_piece.go b/model/mysql_query_piece.go
index 19180c5..5ef6791 100644
--- a/model/mysql_query_piece.go
+++ b/model/mysql_query_piece.go
@@ -62,7 +62,7 @@ func (mqp *MysqlQueryPiece) Bytes() (content []byte) {
 		return mqp.jsonContent
 	}
 
-	mqp.jsonContent = marsharQueryPiece(mqp)
+	mqp.jsonContent = marsharQueryPieceMonopolize(mqp)
 	return mqp.jsonContent
 }
 
diff --git a/model/query_piece.go b/model/query_piece.go
index e0d3a74..80f207d 100644
--- a/model/query_piece.go
+++ b/model/query_piece.go
@@ -1,13 +1,15 @@
 package model
 
 import (
-	// "github.com/json-iterator/go"
 	"bytes"
 	"encoding/json"
+	jsoniter "github.com/json-iterator/go"
 	"github.com/pingcap/tidb/util/hack"
 	"time"
 )
 
+var jsonIterator = jsoniter.ConfigCompatibleWithStandardLibrary
+
 type QueryPiece interface {
 	String() *string
 	Bytes() []byte
@@ -70,7 +72,7 @@ func (bqp *BaseQueryPiece) Bytes() (content []byte) {
 		return bqp.jsonContent
 	}
 
-	bqp.jsonContent = marsharQueryPiece(bqp)
+	bqp.jsonContent = marsharQueryPieceMonopolize(bqp)
 	return bqp.jsonContent
 }
 
@@ -81,7 +83,7 @@ func (bqp *BaseQueryPiece) GetSQL() (*string) {
 func (bqp *BaseQueryPiece) Recovery() {
 }
 
-func marsharQueryPiece(qp interface{}) []byte {
+func marsharQueryPieceShareMemory(qp interface{}) []byte {
 	var cacheBuffer = localSliceBufferPool.Dequeue()
 	if len(cacheBuffer) > 0 {
 		panic("there already have bytes in buffer")
@@ -95,3 +97,12 @@ func marsharQueryPiece(qp interface{}) []byte {
 
 	return buffer.Bytes()
 }
+
+func marsharQueryPieceMonopolize(qp interface{}) (content []byte) {
+	content, err := jsonIterator.Marshal(qp)
+	if err != nil {
+		return []byte(err.Error())
+	}
+
+	return content
+}
\ No newline at end of file
diff --git a/vendor/github.com/zr-hebo/util-db/query_db.go b/vendor/github.com/zr-hebo/util-db/query_db.go
index 574ae53..64b0f22 100644
--- a/vendor/github.com/zr-hebo/util-db/query_db.go
+++ b/vendor/github.com/zr-hebo/util-db/query_db.go
@@ -43,12 +43,14 @@ type MysqlDB struct {
 	DatabaseType   string
 	DBName         string
 	ConnectTimeout int
+	QueryTimeout   int
 }
 
 // NewMysqlDB 创建MySQL数据库
 func NewMysqlDB() (md *MysqlDB) {
 	md = new(MysqlDB)
 	md.DatabaseType = dbTypeMysql
+	md.QueryTimeout = 5
 	return
 }
 
@@ -352,7 +354,7 @@ func (md *MysqlDB) fillConnStr() string {
 		md.UserName, md.Passwd, md.IP, md.Port, md.DBName)
 	if md.ConnectTimeout > 0 {
 		dbServerInfoStr = fmt.Sprintf("%s?timeout=%ds&readTimeout=%ds&writeTimeout=%ds",
-			dbServerInfoStr, md.ConnectTimeout, md.ConnectTimeout, md.ConnectTimeout)
+			dbServerInfoStr, md.ConnectTimeout, md.QueryTimeout, md.QueryTimeout)
 	}
 
 	return dbServerInfoStr
diff --git a/vendor/github.com/zr-hebo/util-db/query_pooled_db.go b/vendor/github.com/zr-hebo/util-db/query_pooled_db.go
index 051c35d..dbe820e 100644
--- a/vendor/github.com/zr-hebo/util-db/query_pooled_db.go
+++ b/vendor/github.com/zr-hebo/util-db/query_pooled_db.go
@@ -6,7 +6,6 @@ import (
 	"time"
 )
 
-
 // PooledMysqlDB Mysql主机实例
 type PooledMysqlDB struct {
 	MysqlDB
@@ -46,6 +45,7 @@ func NewPooledMysqlDBWithAllParam(
 func NewPooledMysqlDB() (pmd *PooledMysqlDB) {
 	pmd = new(PooledMysqlDB)
 	pmd.DatabaseType = dbTypeMysql
+	pmd.QueryTimeout = 5
 	pmd.lock = new(sync.Mutex)
 	return
 }