diff --git a/.example/database/gkvdb/badger/main.go b/.example/database/gkvdb/badger/main.go
deleted file mode 100644
index 6bcbc3fdd..000000000
--- a/.example/database/gkvdb/badger/main.go
+++ /dev/null
@@ -1,18 +0,0 @@
-package main
-
-import (
-	"log"
-
-	"github.com/dgraph-io/badger"
-)
-
-func main() {
-	// Open the Badger database located in the /tmp/badger directory.
-	// It will be created if it doesn't exist.
-	db, err := badger.Open(badger.DefaultOptions("/tmp/badger"))
-	if err != nil {
-		log.Fatal(err)
-	}
-	defer db.Close()
-	// Your code here…
-}
diff --git a/.example/database/gkvdb/main1.go b/.example/database/gkvdb/main1.go
deleted file mode 100644
index 401a70a42..000000000
--- a/.example/database/gkvdb/main1.go
+++ /dev/null
@@ -1,19 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"time"
-
-	"github.com/gogf/gf/database/gkvdb"
-)
-
-func main() {
-	key := []byte("key")
-	value := []byte("value")
-
-	db := gkvdb.Instance()
-	db.SetPath("/tmp/gkvdb/test")
-	db.Set(key, value)
-	fmt.Println(db.Get(key))
-	time.Sleep(time.Hour)
-}
diff --git a/DONATOR.MD b/DONATOR.MD
index e8158e624..c087556ba 100644
--- a/DONATOR.MD
+++ b/DONATOR.MD
@@ -12,6 +12,7 @@
 |[zhuhuan12](https://gitee.com/zhuhuan12)|gitee|￥50.00
 |[zfan_codes](https://gitee.com/zfan_codes)|gitee|￥10.00
 |[arden](https://github.com/arden)|alipay|￥10.00
+|[macnie](https://www.macnie.com)|wechat|￥100.00
 |x*z|wechat|￥20.00
 |潘兄|wechat|￥100.00
 |Fly的狐狸|wechat|￥100.00
diff --git a/crypto/gaes/gaes.go b/crypto/gaes/gaes.go
index 571f80c7c..b9428755d 100644
--- a/crypto/gaes/gaes.go
+++ b/crypto/gaes/gaes.go
@@ -14,8 +14,10 @@ import (
 	"errors"
 )
 
-const (
-	ivDefValue = "I Love Go Frame!"
+var (
+	// IVDefaultValue is the default value for IV.
+	// This can be changed globally.
+	IVDefaultValue = "I Love Go Frame!"
 )
 
 // Encrypt is alias of EncryptCBC.
@@ -40,7 +42,7 @@ func EncryptCBC(plainText []byte, key []byte, iv ...[]byte) ([]byte, error) {
 	if len(iv) > 0 {
 		ivValue = iv[0]
 	} else {
-		ivValue = []byte(ivDefValue)
+		ivValue = []byte(IVDefaultValue)
 	}
 	blockMode := cipher.NewCBCEncrypter(block, ivValue)
 	cipherText := make([]byte, len(plainText))
@@ -63,7 +65,7 @@ func DecryptCBC(cipherText []byte, key []byte, iv ...[]byte) ([]byte, error) {
 	if len(iv) > 0 {
 		ivValue = iv[0]
 	} else {
-		ivValue = []byte(ivDefValue)
+		ivValue = []byte(IVDefaultValue)
 	}
 	if len(cipherText)%blockSize != 0 {
 		return nil, errors.New("cipherText is not a multiple of the block size")
@@ -122,7 +124,7 @@ func EncryptCFB(plainText []byte, key []byte, padding *int, iv ...[]byte) ([]byt
 	if len(iv) > 0 {
 		ivValue = iv[0]
 	} else {
-		ivValue = []byte(ivDefValue)
+		ivValue = []byte(IVDefaultValue)
 	}
 	stream := cipher.NewCFBEncrypter(block, ivValue)
 	cipherText := make([]byte, len(plainText))
@@ -144,7 +146,7 @@ func DecryptCFB(cipherText []byte, key []byte, unpadding int, iv ...[]byte) ([]b
 	if len(iv) > 0 {
 		ivValue = iv[0]
 	} else {
-		ivValue = []byte(ivDefValue)
+		ivValue = []byte(IVDefaultValue)
 	}
 	stream := cipher.NewCFBDecrypter(block, ivValue)
 	plainText := make([]byte, len(cipherText))
diff --git a/database/gkvdb/gkvdb.go b/database/gkvdb/gkvdb.go
deleted file mode 100644
index fed37002b..000000000
--- a/database/gkvdb/gkvdb.go
+++ /dev/null
@@ -1,50 +0,0 @@
-// Copyright 2019 gf Author(https://github.com/gogf/gf). All Rights Reserved.
-//
-// This Source Code Form is subject to the terms of the MIT License.
-// If a copy of the MIT was not distributed with this file,
-// You can obtain one at https://github.com/gogf/gf.
-
-// Package gkvdb provides a lightweight, embeddable and persistent key-value database.
-package gkvdb
-
-import (
-	"github.com/dgraph-io/badger"
-	"github.com/gogf/gf/container/gmap"
-)
-
-type Options = badger.Options
-
-const (
-	// Default instance name.
-	DEFAULT_NAME = "default"
-)
-
-var (
-	// Instance map
-	instances = gmap.NewStrAnyMap(true)
-)
-
-// DefaultOptions returns the default options for gkvdb.
-func DefaultOptions(path string) Options {
-	options := badger.DefaultOptions(path)
-	options.Logger = nil
-	options.SyncWrites = false
-	return options
-}
-
-// Instance returns an instance of DB with specified name.
-// The <name> param is unnecessary, if <name> is not passed,
-// it returns a instance with default name.
-func Instance(name ...string) *DB {
-	instanceName := DEFAULT_NAME
-	if len(name) > 0 && name[0] != "" {
-		instanceName = name[0]
-	}
-	v := instances.GetOrSetFuncLock(instanceName, func() interface{} {
-		return New()
-	})
-	if v != nil {
-		return v.(*DB)
-	}
-	return nil
-}
diff --git a/database/gkvdb/gkvdb_db.go b/database/gkvdb/gkvdb_db.go
deleted file mode 100644
index 36d39eb96..000000000
--- a/database/gkvdb/gkvdb_db.go
+++ /dev/null
@@ -1,149 +0,0 @@
-// Copyright 2019 gf Author(https://github.com/gogf/gf). All Rights Reserved.
-//
-// This Source Code Form is subject to the terms of the MIT License.
-// If a copy of the MIT was not distributed with this file,
-// You can obtain one at https://github.com/gogf/gf.
-
-package gkvdb
-
-import (
-	"errors"
-	"time"
-
-	"github.com/gogf/gf/os/gfile"
-
-	"github.com/dgraph-io/badger"
-)
-
-type DB struct {
-	options Options
-	badger  *badger.DB
-}
-
-// New creates and returns a new db object.
-func New(options ...Options) *DB {
-	if len(options) > 0 {
-		return &DB{options: options[0]}
-	}
-	return &DB{options: DefaultOptions("")}
-}
-
-// init does lazy initialization for db.
-func (db *DB) init() (err error) {
-	if db.badger != nil {
-		return nil
-	}
-	if !gfile.Exists(db.options.Dir) {
-		err = gfile.Mkdir(db.options.Dir)
-		if err != nil {
-			return
-		}
-	}
-	db.badger, err = badger.Open(db.options)
-	return
-}
-
-// Options return the options of current db object.
-func (db *DB) Options() *Options {
-	return &db.options
-}
-
-// SetOptions sets the options for db.
-func (db *DB) SetOptions(options Options) error {
-	if db.badger != nil {
-		return errors.New("options cannot be changed after db is initialized")
-	}
-	db.options = options
-	return nil
-}
-
-// SetPath sets the storage folder path for db.
-func (db *DB) SetPath(path string) error {
-	if db.badger != nil {
-		return errors.New("options cannot be changed after db is initialized")
-	}
-	db.options.Dir = path
-	db.options.ValueDir = path
-	return nil
-}
-
-// Size returns the data count of current db.
-func (db *DB) Size() int64 {
-	if err := db.init(); err != nil {
-		return 0
-	}
-	lsm, vlog := db.badger.Size()
-	return lsm + vlog
-}
-
-// Set sets <key>-<value> pair data to current db with <ttl>.
-// The <ttl> is optional, which is not expired in default.
-func (db *DB) Set(key []byte, value []byte, ttl ...time.Duration) (err error) {
-	if err := db.init(); err != nil {
-		return err
-	}
-	tx := db.Begin(true)
-	defer tx.Commit()
-	return tx.Set(key, value, ttl...)
-}
-
-// Get returns the value with given key.
-// It returns nil if <key> is not found in the db.
-func (db *DB) Get(key []byte) (value []byte) {
-	if err := db.init(); err != nil {
-		return
-	}
-	tx := db.Begin(false)
-	defer tx.Rollback()
-	return tx.Get(key)
-}
-
-// Delete removed data specified by <key> from current db.
-func (db *DB) Delete(key []byte) error {
-	if err := db.init(); err != nil {
-		return err
-	}
-	tx := db.Begin(true)
-	defer tx.Commit()
-	return tx.Delete(key)
-}
-
-// Close closes the db.
-func (db *DB) Close() error {
-	if db.badger == nil {
-		return nil
-	}
-	return db.badger.Close()
-}
-
-// Iterate is alias of IterateAsc.
-// See IterateAsc.
-func (db *DB) Iterate(prefix []byte, f func(key, value []byte) bool) {
-	db.IterateAsc(prefix, f)
-}
-
-// IteratorAsc iterates the db in ascending order
-// with given callback function <f> starting from <seek>.
-// If <seek> is nil it iterates from the beginning of the db.
-// If <f> returns true, then it continues iterating; or false to stop.
-func (db *DB) IterateAsc(prefix []byte, f func(key, value []byte) bool) {
-	if err := db.init(); err != nil {
-		return
-	}
-	tx := db.Begin(false)
-	defer tx.Rollback()
-	tx.IterateAsc(prefix, f)
-}
-
-// IteratorDesc iterates the db in descending order
-// with given callback function <f> starting from <seek>.
-// If <prefix> is nil it iterates from the beginning of the db.
-// If <f> returns true, then it continues iterating; or false to stop.
-func (db *DB) IterateDesc(prefix []byte, f func(key, value []byte) bool) {
-	if err := db.init(); err != nil {
-		return
-	}
-	tx := db.Begin(false)
-	defer tx.Rollback()
-	tx.IterateDesc(prefix, f)
-}
diff --git a/database/gkvdb/gkvdb_tx.go b/database/gkvdb/gkvdb_tx.go
deleted file mode 100644
index 3cd54eb36..000000000
--- a/database/gkvdb/gkvdb_tx.go
+++ /dev/null
@@ -1,116 +0,0 @@
-// Copyright 2019 gf Author(https://github.com/gogf/gf). All Rights Reserved.
-//
-// This Source Code Form is subject to the terms of the MIT License.
-// If a copy of the MIT was not distributed with this file,
-// You can obtain one at https://github.com/gogf/gf.
-
-package gkvdb
-
-import (
-	"time"
-
-	"github.com/dgraph-io/badger"
-)
-
-// TX is the transaction object for db.
-type TX struct {
-	db  *DB
-	txn *badger.Txn
-}
-
-// Begin starts the transaction for db.
-func (db *DB) Begin(update bool) *TX {
-	if err := db.init(); err != nil {
-		return nil
-	}
-	return &TX{
-		db:  db,
-		txn: db.badger.NewTransaction(update),
-	}
-}
-
-// Commit commits the changes and close the transaction.
-func (tx *TX) Commit() error {
-	return tx.txn.Commit()
-}
-
-// Rollback discards the changes and close the transaction.
-func (tx *TX) Rollback() {
-	tx.txn.Discard()
-}
-
-// Set sets <key>-<value> pair data to current db with <ttl> in this transaction.
-// The <ttl> is optional, which is not expired in default.
-func (tx *TX) Set(key []byte, value []byte, ttl ...time.Duration) error {
-	if len(ttl) > 0 && ttl[0] > 0 {
-		return tx.txn.SetEntry(badger.NewEntry(key, value).WithTTL(ttl[0]))
-	}
-	return tx.txn.Set(key, value)
-}
-
-// Get returns the value with given key in this transaction.
-// It returns nil if <key> is not found in the db.
-func (tx *TX) Get(key []byte) (value []byte) {
-	item, err := tx.txn.Get(key)
-	if err != nil {
-		return nil
-	}
-	if item.IsDeletedOrExpired() {
-		return nil
-	}
-	value, _ = item.ValueCopy(nil)
-	return
-}
-
-// Delete removed data specified by <key> from current db in this transaction.
-func (tx *TX) Delete(key []byte) error {
-	return tx.txn.Delete(key)
-}
-
-// Iterate is alias of IterateAsc.
-// See IterateAsc.
-func (tx *TX) Iterate(prefix []byte, f func(key, value []byte) bool) {
-	tx.IterateAsc(prefix, f)
-}
-
-// IteratorAsc iterates the db in ascending order
-// with given callback function <f> starting from <prefix>.
-// If <seek> is nil it iterates from the beginning of the db.
-// If <f> returns true, then it continues iterating; or false to stop.
-func (tx *TX) IterateAsc(prefix []byte, f func(key, value []byte) bool) {
-	tx.doIterate(false, prefix, f)
-}
-
-// IteratorDesc iterates the db in descending order
-// with given callback function <f> starting from <prefix>.
-// If <seek> is nil it iterates from the beginning of the db.
-// If <f> returns true, then it continues iterating; or false to stop.
-func (tx *TX) IterateDesc(prefix []byte, f func(key, value []byte) bool) {
-	tx.doIterate(true, prefix, f)
-}
-
-func (tx *TX) doIterate(reverse bool, prefix []byte, f func(key, value []byte) bool) {
-	options := badger.DefaultIteratorOptions
-	if prefix != nil {
-		options.Prefix = prefix
-	}
-	options.Reverse = reverse
-	options.PrefetchSize = 10
-	options.PrefetchValues = true
-	it := tx.txn.NewIterator(options)
-	defer it.Close()
-	var k, v []byte
-	var err error
-	var item *badger.Item
-	for it.Rewind(); it.Valid(); it.Next() {
-		item = it.Item()
-		k = item.Key()
-		v, err = item.ValueCopy(nil)
-		if err != nil {
-			return
-		}
-		if !f(k, v) {
-			return
-		}
-	}
-}
diff --git a/database/gkvdb/gkvdb_unit_test.go b/database/gkvdb/gkvdb_unit_test.go
deleted file mode 100644
index b65d32a58..000000000
--- a/database/gkvdb/gkvdb_unit_test.go
+++ /dev/null
@@ -1,134 +0,0 @@
-// Copyright 2019 gf Author(https://github.com/gogf/gf). All Rights Reserved.
-//
-// This Source Code Form is subject to the terms of the MIT License.
-// If a copy of the MIT was not distributed with this file,
-// You can obtain one at https://github.com/gogf/gf.
-
-package gkvdb_test
-
-import (
-	"strings"
-	"testing"
-	"time"
-
-	"github.com/dgraph-io/badger/options"
-
-	"github.com/gogf/gf/frame/g"
-
-	"github.com/gogf/gf/container/garray"
-
-	"github.com/gogf/gf/os/gtime"
-	"github.com/gogf/gf/util/gconv"
-
-	"github.com/gogf/gf/database/gkvdb"
-
-	"github.com/gogf/gf/test/gtest"
-)
-
-func init() {
-
-}
-
-func Test_New(t *testing.T) {
-	gtest.Case(t, func() {
-		name := gconv.String(gtime.Nanosecond())
-		path := "/tmp/gkvdb/" + name
-		key := []byte("key")
-		value := []byte("value")
-
-		db := gkvdb.Instance(name)
-		// https://github.com/dgraph-io/badger#memory-usage
-		db.Options().ValueLogLoadingMode = options.FileIO
-		err := db.SetPath(path)
-		gtest.Assert(err, nil)
-
-		err = db.Set(key, value)
-		gtest.Assert(err, nil)
-
-		gtest.Assert(db.Get(key), value)
-		gtest.Assert(db.Delete(key), nil)
-		gtest.Assert(db.Get(key), nil)
-	})
-}
-
-func Test_Set(t *testing.T) {
-	gtest.Case(t, func() {
-		name := gconv.String(gtime.Nanosecond())
-		path := "/tmp/gkvdb/" + name
-		key := []byte("key")
-		value := []byte("value")
-
-		db := gkvdb.Instance(name)
-		// https://github.com/dgraph-io/badger#memory-usage
-		db.Options().ValueLogLoadingMode = options.FileIO
-		err := db.SetPath(path)
-		gtest.Assert(err, nil)
-
-		err = db.Set(key, value, 1000*time.Millisecond)
-		gtest.Assert(err, nil)
-
-		gtest.Assert(db.Get(key), value)
-		time.Sleep(1500 * time.Millisecond)
-		gtest.Assert(db.Get(key), nil)
-	})
-}
-
-func Test_Iterate(t *testing.T) {
-	gtest.Case(t, func() {
-		name := gconv.String(gtime.Nanosecond())
-		path := "/tmp/gkvdb/" + name
-		db := gkvdb.Instance(name)
-		// https://github.com/dgraph-io/badger#memory-usage
-		db.Options().ValueLogLoadingMode = options.FileIO
-		err := db.SetPath(path)
-		gtest.Assert(err, nil)
-
-		strArray := garray.NewSortedStrArray()
-		strArrayReverse := garray.NewSortedStrArrayComparator(func(a, b string) int {
-			switch strings.Compare(a, b) {
-			case 0:
-				return 0
-			case 1:
-				return -1
-			case -1:
-				return 1
-			}
-			return 0
-		})
-		for i := 1; i <= 10; i++ {
-			key := []byte("key_" + gconv.String(i))
-			strArray.Add(string(key))
-			strArrayReverse.Add(string(key))
-			db.Set(key, key)
-		}
-
-		array := garray.New()
-		db.Iterate(nil, func(key, value []byte) bool {
-			array.Append(string(key))
-			return true
-		})
-		gtest.Assert(array.Slice(), strArray.Slice())
-
-		array = garray.New()
-		db.IterateDesc(nil, func(key, value []byte) bool {
-			array.Append(string(key))
-			return true
-		})
-		gtest.Assert(array.Slice(), strArrayReverse.Slice())
-
-		array = garray.New()
-		db.Iterate([]byte("key_1"), func(key, value []byte) bool {
-			array.Append(key)
-			return true
-		})
-		gtest.Assert(array.Slice(), g.Slice{[]byte("key_1"), []byte("key_10")})
-
-		array = garray.New()
-		db.IterateAsc([]byte("key_1"), func(key, value []byte) bool {
-			array.Append(key)
-			return true
-		})
-		gtest.Assert(array.Slice(), g.Slice{[]byte("key_1"), []byte("key_10")})
-
-	})
-}
diff --git a/go.mod b/go.mod
index c8b12f44d..38228b5f5 100644
--- a/go.mod
+++ b/go.mod
@@ -3,21 +3,18 @@ module github.com/gogf/gf
 require (
 	github.com/BurntSushi/toml v0.3.1
 	github.com/clbanning/mxj v1.8.4
-	github.com/dgraph-io/badger v1.6.0
 	github.com/fatih/structs v1.1.0
 	github.com/fsnotify/fsnotify v1.4.7
 	github.com/gf-third/mysql v1.4.2
 	github.com/gofrs/flock v0.7.1 // indirect
 	github.com/gomodule/redigo v2.0.0+incompatible
-	github.com/gorilla/websocket v1.4.0
+	github.com/gorilla/websocket v1.4.1
 	github.com/grokify/html-strip-tags-go v0.0.0-20190424092004-025bd760b278
-	github.com/kr/pretty v0.1.0 // indirect
 	github.com/mattn/go-runewidth v0.0.4 // indirect
 	github.com/olekukonko/tablewriter v0.0.1
 	github.com/theckman/go-flock v0.7.1
-	golang.org/x/sys v0.0.0-20190801041406-cbf593c0f2f3 // indirect
+	golang.org/x/sys v0.0.0-20190910064555-bbd175535a8b // indirect
 	golang.org/x/text v0.3.2
-	google.golang.org/appengine v1.6.1 // indirect
-	gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 // indirect
-	gopkg.in/yaml.v3 v3.0.0-20190709130402-674ba3eaed22
+	google.golang.org/appengine v1.6.2 // indirect
+	gopkg.in/yaml.v3 v3.0.0-20190905181640-827449938966
 )
diff --git a/go.sum b/go.sum
index 5bc74472c..97b25b58c 100644
--- a/go.sum
+++ b/go.sum
@@ -1,22 +1,7 @@
-github.com/AndreasBriese/bbloom v0.0.0-20190306092124-e2d15f34fcf9 h1:HD8gA2tkByhMAwYaFAX9w2l7vxvBQ5NMoxDrkhqhtn4=
-github.com/AndreasBriese/bbloom v0.0.0-20190306092124-e2d15f34fcf9/go.mod h1:bOvUY6CB00SOBii9/FifXqc0awNKxLFCL/+pkDPuyl8=
 github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
 github.com/clbanning/mxj v1.8.4 h1:HuhwZtbyvyOw+3Z1AowPkU87JkJUSv751ELWaiTpj8I=
 github.com/clbanning/mxj v1.8.4/go.mod h1:BVjHeAH+rl9rs6f+QIpeRl0tfu10SXn1pUSa5PVGJng=
-github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
-github.com/coreos/go-etcd v2.0.0+incompatible/go.mod h1:Jez6KQU2B/sWsbdaef3ED8NzMklzPG4d5KIOhIy30Tk=
-github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
-github.com/cpuguy83/go-md2man v1.0.10/go.mod h1:SmD6nW6nTyfqj6ABTjUi3V3JVMnlJmwcJI5acqYI6dE=
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/dgraph-io/badger v1.6.0 h1:DshxFxZWXUcO0xX476VJC07Xsr6ZCBVRHKZ93Oh7Evo=
-github.com/dgraph-io/badger v1.6.0/go.mod h1:zwt7syl517jmP8s94KqSxTlM6IMsdhYy6psNgSztDR4=
-github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2 h1:tdlZCpZ/P9DhczCTSixgIKmwPv6+wP5DGjqLYw5SUiA=
-github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2/go.mod h1:SqUrOPUnsFjfmXRMNPybcSiG0BgUW2AuFH8PAnS2iTw=
-github.com/dustin/go-humanize v1.0.0 h1:VSnTsYCnlFHaM2/igO1h6X3HA71jcobQuxemgkq4zYo=
-github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
 github.com/fatih/structs v1.1.0 h1:Q7juDM0QtcnhCpeyLGQKyg4TOIghuNXrkL32pHAUMxo=
 github.com/fatih/structs v1.1.0/go.mod h1:9NiDSp5zOcgEDl+j00MP/WkGVPOlPRLejGD8Ga6PJ7M=
 github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
@@ -25,72 +10,38 @@ github.com/gf-third/mysql v1.4.2 h1:f1M5CNFUG3WkE07UOomtu4o0n/KJKeuUUf5Nc9ZFXs4=
 github.com/gf-third/mysql v1.4.2/go.mod h1:+dd90V663ppI2fV5uQ6+rHk0u8KCyU6FkG8Um8Cx3ms=
 github.com/gofrs/flock v0.7.1 h1:DP+LD/t0njgoPBvT5MJLeliUIVQR03hiKR6vezdwHlc=
 github.com/gofrs/flock v0.7.1/go.mod h1:F1TvTiK9OcQqauNUHlbJvyl9Qa1QvF/gOUDKA14jxHU=
-github.com/golang/protobuf v1.3.1 h1:YF8+flBXS5eO826T4nzqPrxfhQThhXl0YzfuUPu4SBg=
 github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/gomodule/redigo v2.0.0+incompatible h1:K/R+8tc58AaqLkqG2Ol3Qk+DR/TlNuhuh457pBFPtt0=
 github.com/gomodule/redigo v2.0.0+incompatible/go.mod h1:B4C85qUVwatsJoIUNIfCRsp7qO0iAmpGFZ4EELWSbC4=
-github.com/gorilla/websocket v1.4.0 h1:WDFjx/TMzVgy9VdMMQi2K2Emtwi2QcUQsztZ/zLaH/Q=
-github.com/gorilla/websocket v1.4.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
+github.com/gorilla/websocket v1.4.1 h1:q7AeDBpnBk8AogcD4DSag/Ukw/KV+YhzLj2bP5HvKCM=
+github.com/gorilla/websocket v1.4.1/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
 github.com/grokify/html-strip-tags-go v0.0.0-20190424092004-025bd760b278 h1:DZo48DQFIDo/YWjUeFip1dfJztBhRuaxfUnPd+gAfcs=
 github.com/grokify/html-strip-tags-go v0.0.0-20190424092004-025bd760b278/go.mod h1:Xk7G0nwBiIloTMbLddk4WWJOqi4i/JLhadLd0HUXO30=
-github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
-github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
-github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
-github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
-github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
-github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
-github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
-github.com/magiconair/properties v1.8.0/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ=
 github.com/mattn/go-runewidth v0.0.4 h1:2BvfKmzob6Bmd4YsL0zygOqfdFnK7GR4QL06Do4/p7Y=
 github.com/mattn/go-runewidth v0.0.4/go.mod h1:LwmH8dsx7+W8Uxz3IHJYH5QSwggIsqBzpuz5H//U1FU=
-github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
-github.com/mitchellh/mapstructure v1.1.2/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
 github.com/olekukonko/tablewriter v0.0.1 h1:b3iUnf1v+ppJiOfNX4yxxqfWKMQPZR5yoh8urCTFX88=
 github.com/olekukonko/tablewriter v0.0.1/go.mod h1:vsDQFd/mU46D+Z4whnwzcISnGGzXWMclvtLoiIKAKIo=
-github.com/pelletier/go-toml v1.2.0/go.mod h1:5z9KED0ma1S8pY6P1sdut58dfprrGBbd/94hg7ilaic=
-github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
-github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
-github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/russross/blackfriday v1.5.2/go.mod h1:JO/DiYxRf+HjHt06OyowR9PTA263kcR/rfWxYHBV53g=
-github.com/spf13/afero v1.1.2/go.mod h1:j4pytiNVoe2o6bmDsKpLACNPDBIoEAkihy7loJ1B0CQ=
-github.com/spf13/cast v1.3.0/go.mod h1:Qx5cxh0v+4UWYiBimWS+eyWzqEqokIECu5etghLkUJE=
-github.com/spf13/cobra v0.0.5/go.mod h1:3K3wKZymM7VvHMDS9+Akkh4K60UwM26emMESw8tLCHU=
-github.com/spf13/jwalterweatherman v1.0.0/go.mod h1:cQK4TGJAtQXfYWX+Ddv3mKDzgVb68N+wFjFa4jdeBTo=
-github.com/spf13/pflag v1.0.3/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
-github.com/spf13/viper v1.3.2/go.mod h1:ZiWeW+zYFKm7srdB9IoDzzZXaJaI5eL9QjNiN/DMA2s=
-github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
-github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/theckman/go-flock v0.7.1 h1:YdJyIjDuQdEU7voZ9YaeXSO4OnrxdI+WejPUwyZ/Txs=
 github.com/theckman/go-flock v0.7.1/go.mod h1:kjuth3y9VJ2aNlkNEO99G/8lp9fMIKaGyBmh84IBheM=
-github.com/ugorji/go/codec v0.0.0-20181204163529-d75b2dcb6bc8/go.mod h1:VFNgLljTbGfSG7qAOspJ7OScBnGdDN/yBr0sguwnwf0=
-github.com/xordataexchange/crypt v0.0.3-0.20170626215501-b2862e3d0a77/go.mod h1:aYKd//L2LvnjZzWKhF00oedf4jCCReLcmhLdhm1A27Q=
-golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190603091049-60506f45cf65/go.mod h1:HSz+uSET+XFnRR8LxR5pz3Of3rY3CfYBVs4xY44aLks=
-golang.org/x/net v0.0.0-20190620200207-3b0461eec859 h1:R/3boaszxrf1GEUWTVDzSKVwLmSJpwZ1yqXm8j0v2QI=
-golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sys v0.0.0-20181205085412-a5c9d58dba9a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190606165138-5da285871e9c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20190626221950-04f50cda93cb/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20190801041406-cbf593c0f2f3 h1:4y9KwBHBgBNwDbtu44R5o1fdOCQUEXhbk/P4A9WmJq0=
-golang.org/x/sys v0.0.0-20190801041406-cbf593c0f2f3/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190910064555-bbd175535a8b h1:3S2h5FadpNr0zUUCVZjlKIEYF+KaX/OBplTGo89CYHI=
+golang.org/x/sys v0.0.0-20190910064555-bbd175535a8b/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2 h1:tW2bmiBqwgJj/UpqtC8EpXEZVYOwU0yG4iWbprSVAcs=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190606124116-d0a3d012864b/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
-google.golang.org/appengine v1.6.1 h1:QzqyMA1tlu6CgqCDUtU9V+ZKhLFT2dkJuANu5QaxI3I=
-google.golang.org/appengine v1.6.1/go.mod h1:i06prIuMbXzDqacNJfV5OdTW448YApPu5ww/cMBSeb0=
+google.golang.org/appengine v1.6.2 h1:j8RI1yW0SkI+paT6uGwMlrMI/6zwYA6/CFil8rxOzGI=
+google.golang.org/appengine v1.6.2/go.mod h1:i06prIuMbXzDqacNJfV5OdTW448YApPu5ww/cMBSeb0=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
-gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v3 v3.0.0-20190709130402-674ba3eaed22 h1:0efs3hwEZhFKsCoP8l6dDB1AZWMgnEl3yWXWRZTOaEA=
-gopkg.in/yaml.v3 v3.0.0-20190709130402-674ba3eaed22/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.0-20190905181640-827449938966 h1:B0J02caTR6tpSJozBJyiAzT6CtBzjclw4pgm9gg8Ys0=
+gopkg.in/yaml.v3 v3.0.0-20190905181640-827449938966/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
diff --git a/net/ghttp/ghttp_request.go b/net/ghttp/ghttp_request.go
index 1158a9934..627411bbb 100644
--- a/net/ghttp/ghttp_request.go
+++ b/net/ghttp/ghttp_request.go
@@ -12,6 +12,8 @@ import (
 	"net/http"
 	"strings"
 
+	"github.com/gogf/gf/os/gsession"
+
 	"github.com/gogf/gf/container/gvar"
 	"github.com/gogf/gf/encoding/gjson"
 	"github.com/gogf/gf/os/gtime"
@@ -24,7 +26,7 @@ type Request struct {
 	Id              int                    // 请求ID(当前Server对象唯一)
 	Server          *Server                // 请求关联的服务器对象
 	Cookie          *Cookie                // 与当前请求绑定的Cookie对象(并发安全)
-	Session         *Session               // 与当前请求绑定的Session对象(并发安全)
+	Session         *gsession.Session      // 与当前请求绑定的Session对象(并发安全)
 	Response        *Response              // 对应请求的返回数据操作对象
 	Router          *Router                // 匹配到的路由对象
 	EnterTime       int64                  // 请求进入时间(微秒)
@@ -58,7 +60,7 @@ func newRequest(s *Server, r *http.Request, w http.ResponseWriter) *Request {
 	}
 	// 会话处理
 	request.Cookie = GetCookie(request)
-	request.Session = GetSession(request)
+	request.Session = s.sessionManager.New(request.GetSessionId())
 	request.Response.request = request
 	request.Middleware = &Middleware{
 		request: request,
@@ -239,7 +241,7 @@ func (r *Request) GetSessionId() string {
 
 // 生成随机的SESSIONID
 func (r *Request) MakeSessionId() string {
-	id := makeSessionId()
+	id := gsession.NewSessionId()
 	r.Cookie.SetSessionId(id)
 	r.Response.Header().Set(r.Server.GetSessionIdName(), id)
 	return id
diff --git a/net/ghttp/ghttp_server.go b/net/ghttp/ghttp_server.go
index e252784d0..f2e6dbf1e 100644
--- a/net/ghttp/ghttp_server.go
+++ b/net/ghttp/ghttp_server.go
@@ -17,9 +17,7 @@ import (
 	"strings"
 	"time"
 
-	"github.com/dgraph-io/badger/options"
-
-	"github.com/gogf/gf/database/gkvdb"
+	"github.com/gogf/gf/os/gsession"
 
 	"github.com/gogf/gf/container/garray"
 	"github.com/gogf/gf/container/gmap"
@@ -49,8 +47,7 @@ type (
 		serveCache       *gcache.Cache                    // 服务注册路由内存缓存
 		routesMap        map[string][]registeredRouteItem // 已经注册的路由及对应的注册方法文件地址(用以路由重复注册判断)
 		statusHandlerMap map[string]HandlerFunc           // 不同状态码下的注册处理方法(例如404状态时的处理方法)
-		sessions         *gcache.Cache                    // Session内存存储
-		sessionStorage   *gkvdb.DB                        // Session物理存储
+		sessionManager   *gsession.Manager                // Session管理器
 		logger           *glog.Logger                     // 日志管理对象
 	}
 
@@ -215,11 +212,9 @@ func GetServer(name ...interface{}) *Server {
 	if s := serverMapping.Get(serverName); s != nil {
 		return s.(*Server)
 	}
-	storagePath := defaultServerConfig.SessionStoragePath + gfile.Separator + serverName
-	sessionStorage := gkvdb.Instance(storagePath)
-	sessionStorage.SetOptions(gkvdb.DefaultOptions(storagePath))
-	if genv.Contains("UNDER_TEST") {
-		sessionStorage.Options().ValueLogLoadingMode = options.FileIO
+	config := defaultServerConfig
+	if config.SessionStorage == nil {
+		config.SessionStorage = gsession.NewStorageFile(config.SessionMaxAge)
 	}
 	s := &Server{
 		name:             serverName,
@@ -230,13 +225,12 @@ func GetServer(name ...interface{}) *Server {
 		serveTree:        make(map[string]interface{}),
 		serveCache:       gcache.New(),
 		routesMap:        make(map[string][]registeredRouteItem),
-		sessions:         gcache.New(),
-		sessionStorage:   sessionStorage,
+		sessionManager:   gsession.New(config.SessionMaxAge, config.SessionStorage),
 		servedCount:      gtype.NewInt(),
 		logger:           glog.New(),
 	}
 	// 初始化时使用默认配置
-	s.SetConfig(defaultServerConfig)
+	s.SetConfig(config)
 	// 记录到全局ServerMap中
 	serverMapping.Set(serverName, s)
 	return s
diff --git a/net/ghttp/ghttp_server_config.go b/net/ghttp/ghttp_server_config.go
index 946af2148..e8595c193 100644
--- a/net/ghttp/ghttp_server_config.go
+++ b/net/ghttp/ghttp_server_config.go
@@ -13,6 +13,8 @@ import (
 	"strconv"
 	"time"
 
+	"github.com/gogf/gf/os/gsession"
+
 	"github.com/gogf/gf/os/gview"
 
 	"github.com/gogf/gf/os/gfile"
@@ -20,16 +22,12 @@ import (
 )
 
 const (
-	gDEFAULT_HTTP_ADDR                 = ":80"         // 默认HTTP监听地址
-	gDEFAULT_HTTPS_ADDR                = ":443"        // 默认HTTPS监听地址
-	NAME_TO_URI_TYPE_DEFAULT           = 0             // 服务注册时对象和方法名称转换为URI时，全部转为小写，单词以'-'连接符号连接
-	NAME_TO_URI_TYPE_FULLNAME          = 1             // 不处理名称，以原有名称构建成URI
-	NAME_TO_URI_TYPE_ALLLOWER          = 2             // 仅转为小写，单词间不使用连接符号
-	NAME_TO_URI_TYPE_CAMEL             = 3             // 采用驼峰命名方式
-	gDEFAULT_COOKIE_PATH               = "/"           // 默认path
-	gDEFAULT_COOKIE_MAX_AGE            = 86400 * 365   // 默认cookie有效期(一年)
-	gDEFAULT_SESSION_MAX_AGE           = 86400         // 默认session有效期(一天)
-	gDEFAULT_SESSION_ID_NAME           = "gfsessionid" // 默认存放Cookie中的SessionId名称
+	gDEFAULT_HTTP_ADDR                 = ":80"  // 默认HTTP监听地址
+	gDEFAULT_HTTPS_ADDR                = ":443" // 默认HTTPS监听地址
+	NAME_TO_URI_TYPE_DEFAULT           = 0      // 服务注册时对象和方法名称转换为URI时，全部转为小写，单词以'-'连接符号连接
+	NAME_TO_URI_TYPE_FULLNAME          = 1      // 不处理名称，以原有名称构建成URI
+	NAME_TO_URI_TYPE_ALLLOWER          = 2      // 仅转为小写，单词间不使用连接符号
+	NAME_TO_URI_TYPE_CAMEL             = 3      // 采用驼峰命名方式
 	gCHANGE_CONFIG_WHILE_RUNNING_ERROR = "server's configuration cannot be changed while running"
 )
 
@@ -38,74 +36,73 @@ type LogHandler func(r *Request, error ...interface{})
 
 // HTTP Server 设置结构体，静态配置
 type ServerConfig struct {
-	Addr               string            // 监听IP和端口，监听本地所有IP使用":端口"(支持多个地址，使用","号分隔)
-	HTTPSAddr          string            // HTTPS服务监听地址(支持多个地址，使用","号分隔)
-	HTTPSCertPath      string            // HTTPS证书文件路径
-	HTTPSKeyPath       string            // HTTPS签名文件路径
-	Handler            http.Handler      // 默认的处理函数
-	ReadTimeout        time.Duration     // 读取超时
-	WriteTimeout       time.Duration     // 写入超时
-	IdleTimeout        time.Duration     // 等待超时
-	MaxHeaderBytes     int               // 最大的header长度
-	TLSConfig          tls.Config        // HTTPS证书配置
-	KeepAlive          bool              // 是否开启长连接
-	ServerAgent        string            // Server Agent
-	View               *gview.View       // 模板引擎对象
-	Rewrites           map[string]string // URI Rewrite重写配置
-	IndexFiles         []string          // Static: 默认访问的文件列表
-	IndexFolder        bool              // Static: 如果访问目录是否显示目录列表
-	ServerRoot         string            // Static: 服务器服务的本地目录根路径(检索优先级比StaticPaths低)
-	SearchPaths        []string          // Static: 静态文件搜索目录(包含ServerRoot，按照优先级进行排序)
-	StaticPaths        []staticPathItem  // Static: 静态文件目录映射(按照优先级进行排序)
-	FileServerEnabled  bool              // Static: 是否允许静态文件服务(通过静态文件服务方法调用自动识别)
-	CookieMaxAge       int64             // Cookie: 有效期(秒)
-	CookiePath         string            // Cookie: 有效Path(注意同时也会影响SessionID)
-	CookieDomain       string            // Cookie: 有效Domain(注意同时也会影响SessionID)
-	SessionMaxAge      int64             // Session: 有效期(秒)
-	SessionIdName      string            // Session: SessionId
-	SessionStoragePath string            // Session: 存储路径
-	DenyIps            []string          // Security: 不允许访问的ip列表，支持ip前缀过滤，如: 10 将不允许10开头的ip访问
-	AllowIps           []string          // Security: 仅允许访问的ip列表，支持ip前缀过滤，如: 10 将仅允许10开头的ip访问
-	DenyRoutes         []string          // Security: 不允许访问的路由规则列表
-	LogPath            string            // Logging: 存放日志的目录路径(默认为空，表示不写文件)
-	LogHandler         LogHandler        // Logging: 日志配置: 自定义日志处理回调方法(默认为空)
-	LogStdout          bool              // Logging: 是否打印日志到终端(默认开启)
-	ErrorLogEnabled    bool              // Logging: 是否开启error log(默认开启)
-	AccessLogEnabled   bool              // Logging: 是否开启access log(默认关闭)
-	NameToUriType      int               // Mess: 服务注册时对象和方法名称转换为URI时的规则
-	GzipContentTypes   []string          // Mess: 允许进行gzip压缩的文件类型
-	DumpRouteMap       bool              // Mess: 是否在程序启动时默认打印路由表信息
-	RouterCacheExpire  int               // Mess: 路由检索缓存过期时间(秒)
+	Addr              string            // 监听IP和端口，监听本地所有IP使用":端口"(支持多个地址，使用","号分隔)
+	HTTPSAddr         string            // HTTPS服务监听地址(支持多个地址，使用","号分隔)
+	HTTPSCertPath     string            // HTTPS证书文件路径
+	HTTPSKeyPath      string            // HTTPS签名文件路径
+	Handler           http.Handler      // 默认的处理函数
+	ReadTimeout       time.Duration     // 读取超时
+	WriteTimeout      time.Duration     // 写入超时
+	IdleTimeout       time.Duration     // 等待超时
+	MaxHeaderBytes    int               // 最大的header长度
+	TLSConfig         tls.Config        // HTTPS证书配置
+	KeepAlive         bool              // 是否开启长连接
+	ServerAgent       string            // Server Agent
+	View              *gview.View       // 模板引擎对象
+	Rewrites          map[string]string // URI Rewrite重写配置
+	IndexFiles        []string          // Static: 默认访问的文件列表
+	IndexFolder       bool              // Static: 如果访问目录是否显示目录列表
+	ServerRoot        string            // Static: 服务器服务的本地目录根路径(检索优先级比StaticPaths低)
+	SearchPaths       []string          // Static: 静态文件搜索目录(包含ServerRoot，按照优先级进行排序)
+	StaticPaths       []staticPathItem  // Static: 静态文件目录映射(按照优先级进行排序)
+	FileServerEnabled bool              // Static: 是否允许静态文件服务(通过静态文件服务方法调用自动识别)
+	CookieMaxAge      time.Duration     // Cookie: 有效期
+	CookiePath        string            // Cookie: 有效Path(注意同时也会影响SessionID)
+	CookieDomain      string            // Cookie: 有效Domain(注意同时也会影响SessionID)
+	SessionMaxAge     time.Duration     // Session: 有效期
+	SessionIdName     string            // Session: SessionId
+	SessionStorage    gsession.Storage  // Session: 存储路径
+	DenyIps           []string          // Security: 不允许访问的ip列表，支持ip前缀过滤，如: 10 将不允许10开头的ip访问
+	AllowIps          []string          // Security: 仅允许访问的ip列表，支持ip前缀过滤，如: 10 将仅允许10开头的ip访问
+	DenyRoutes        []string          // Security: 不允许访问的路由规则列表
+	LogPath           string            // Logging: 存放日志的目录路径(默认为空，表示不写文件)
+	LogHandler        LogHandler        // Logging: 日志配置: 自定义日志处理回调方法(默认为空)
+	LogStdout         bool              // Logging: 是否打印日志到终端(默认开启)
+	ErrorLogEnabled   bool              // Logging: 是否开启error log(默认开启)
+	AccessLogEnabled  bool              // Logging: 是否开启access log(默认关闭)
+	NameToUriType     int               // Mess: 服务注册时对象和方法名称转换为URI时的规则
+	GzipContentTypes  []string          // Mess: 允许进行gzip压缩的文件类型
+	DumpRouteMap      bool              // Mess: 是否在程序启动时默认打印路由表信息
+	RouterCacheExpire int               // Mess: 路由检索缓存过期时间(秒)
 }
 
 // 默认HTTP Server配置
 var defaultServerConfig = ServerConfig{
-	Addr:               "",
-	HTTPSAddr:          "",
-	Handler:            nil,
-	ReadTimeout:        60 * time.Second,
-	WriteTimeout:       60 * time.Second,
-	IdleTimeout:        60 * time.Second,
-	MaxHeaderBytes:     1024,
-	KeepAlive:          true,
-	IndexFiles:         []string{"index.html", "index.htm"},
-	IndexFolder:        false,
-	ServerAgent:        "gf http server",
-	ServerRoot:         "",
-	StaticPaths:        make([]staticPathItem, 0),
-	FileServerEnabled:  false,
-	CookieMaxAge:       gDEFAULT_COOKIE_MAX_AGE,
-	CookiePath:         gDEFAULT_COOKIE_PATH,
-	CookieDomain:       "",
-	SessionMaxAge:      gDEFAULT_SESSION_MAX_AGE,
-	SessionIdName:      gDEFAULT_SESSION_ID_NAME,
-	SessionStoragePath: gfile.TempDir() + gfile.Separator + "gfsessions",
-	LogStdout:          true,
-	ErrorLogEnabled:    true,
-	AccessLogEnabled:   false,
-	DumpRouteMap:       true,
-	RouterCacheExpire:  60,
-	Rewrites:           make(map[string]string),
+	Addr:              "",
+	HTTPSAddr:         "",
+	Handler:           nil,
+	ReadTimeout:       60 * time.Second,
+	WriteTimeout:      60 * time.Second,
+	IdleTimeout:       60 * time.Second,
+	MaxHeaderBytes:    1024,
+	KeepAlive:         true,
+	IndexFiles:        []string{"index.html", "index.htm"},
+	IndexFolder:       false,
+	ServerAgent:       "gf http server",
+	ServerRoot:        "",
+	StaticPaths:       make([]staticPathItem, 0),
+	FileServerEnabled: false,
+	CookieMaxAge:      time.Hour * 24 * 365,
+	CookiePath:        "/",
+	CookieDomain:      "",
+	SessionMaxAge:     time.Hour * 24,
+	SessionIdName:     "gfsessionid",
+	LogStdout:         true,
+	ErrorLogEnabled:   true,
+	AccessLogEnabled:  false,
+	DumpRouteMap:      true,
+	RouterCacheExpire: 60,
+	Rewrites:          make(map[string]string),
 }
 
 // 获取默认的http server设置
diff --git a/net/ghttp/ghttp_server_config_cookie.go b/net/ghttp/ghttp_server_config_cookie.go
index 5c49962b7..f629f906a 100644
--- a/net/ghttp/ghttp_server_config_cookie.go
+++ b/net/ghttp/ghttp_server_config_cookie.go
@@ -7,16 +7,18 @@
 package ghttp
 
 import (
+	"time"
+
 	"github.com/gogf/gf/os/glog"
 )
 
 // 设置http server参数 - CookieMaxAge
-func (s *Server) SetCookieMaxAge(age int64) {
+func (s *Server) SetCookieMaxAge(ttl time.Duration) {
 	if s.Status() == SERVER_STATUS_RUNNING {
 		glog.Error(gCHANGE_CONFIG_WHILE_RUNNING_ERROR)
 		return
 	}
-	s.config.CookieMaxAge = age
+	s.config.CookieMaxAge = ttl
 }
 
 // 设置http server参数 - CookiePath
@@ -38,7 +40,7 @@ func (s *Server) SetCookieDomain(domain string) {
 }
 
 // 获取http server参数 - CookieMaxAge
-func (s *Server) GetCookieMaxAge() int64 {
+func (s *Server) GetCookieMaxAge() time.Duration {
 	return s.config.CookieMaxAge
 }
 
diff --git a/net/ghttp/ghttp_server_config_session.go b/net/ghttp/ghttp_server_config_session.go
index 823381392..a1c83c280 100644
--- a/net/ghttp/ghttp_server_config_session.go
+++ b/net/ghttp/ghttp_server_config_session.go
@@ -7,19 +7,20 @@
 package ghttp
 
 import (
-	"fmt"
+	"time"
+
+	"github.com/gogf/gf/os/gsession"
 
-	"github.com/gogf/gf/os/gfile"
 	"github.com/gogf/gf/os/glog"
 )
 
 // 设置http server参数 - SessionMaxAge
-func (s *Server) SetSessionMaxAge(age int64) {
+func (s *Server) SetSessionMaxAge(ttl time.Duration) {
 	if s.Status() == SERVER_STATUS_RUNNING {
 		glog.Error(gCHANGE_CONFIG_WHILE_RUNNING_ERROR)
 		return
 	}
-	s.config.SessionMaxAge = age
+	s.config.SessionMaxAge = ttl
 }
 
 // 设置http server参数 - SessionIdName
@@ -31,24 +32,17 @@ func (s *Server) SetSessionIdName(name string) {
 	s.config.SessionIdName = name
 }
 
-// 设置http server参数 - SessionStoragePath
-func (s *Server) SetSessionStoragePath(path string) {
+// 设置http server参数 - SessionStorage
+func (s *Server) SetSessionStorage(storage gsession.Storage) {
 	if s.Status() == SERVER_STATUS_RUNNING {
 		glog.Error(gCHANGE_CONFIG_WHILE_RUNNING_ERROR)
 		return
 	}
-	realPath, _ := gfile.Search(path)
-	if realPath != "" {
-		glog.Fatal(fmt.Sprintf(`[ghttp] SetSessionStoragePath failed: '%s' does not exist`, path))
-	}
-	s.config.SessionStoragePath = realPath
-	if err := s.sessionStorage.SetPath(realPath); err != nil {
-		glog.Fatal(fmt.Sprintf(`[ghttp] SetSessionStoragePath failed: %s`, err.Error()))
-	}
+	s.config.SessionStorage = storage
 }
 
 // 获取http server参数 - SessionMaxAge
-func (s *Server) GetSessionMaxAge() int64 {
+func (s *Server) GetSessionMaxAge() time.Duration {
 	return s.config.SessionMaxAge
 }
 
@@ -56,8 +50,3 @@ func (s *Server) GetSessionMaxAge() int64 {
 func (s *Server) GetSessionIdName() string {
 	return s.config.SessionIdName
 }
-
-// 获取http server参数 - SessionStoragePath
-func (s *Server) GetSessionStoragePath() string {
-	return s.config.SessionStoragePath
-}
diff --git a/net/ghttp/ghttp_server_cookie.go b/net/ghttp/ghttp_server_cookie.go
index 4a9aff47c..4783acb49 100644
--- a/net/ghttp/ghttp_server_cookie.go
+++ b/net/ghttp/ghttp_server_cookie.go
@@ -21,7 +21,7 @@ type Cookie struct {
 	data     map[string]CookieItem // 数据项
 	path     string                // 默认的cookie path
 	domain   string                // 默认的cookie domain
-	maxage   int64                 // 默认的cookie maxage
+	maxage   time.Duration         // 默认的cookie maxage
 	server   *Server               // 所属Server
 	request  *Request              // 所属HTTP请求对象
 	response *Response             // 所属HTTP返回对象
@@ -32,7 +32,7 @@ type CookieItem struct {
 	value    string
 	domain   string // 有效域名
 	path     string // 有效路径
-	expire   int64  // 过期时间
+	expireAt int64  // 过期时间
 	httpOnly bool
 }
 
@@ -81,7 +81,7 @@ func (c *Cookie) Map() map[string]string {
 func (c *Cookie) Contains(key string) bool {
 	c.init()
 	if r, ok := c.data[key]; ok {
-		if r.expire >= 0 {
+		if r.expireAt >= 0 {
 			return true
 		}
 	}
@@ -94,14 +94,14 @@ func (c *Cookie) Set(key, value string) {
 }
 
 // 设置cookie，带详细cookie参数
-func (c *Cookie) SetCookie(key, value, domain, path string, maxAge int64, httpOnly ...bool) {
+func (c *Cookie) SetCookie(key, value, domain, path string, maxAge time.Duration, httpOnly ...bool) {
 	c.init()
 	isHttpOnly := false
 	if len(httpOnly) > 0 {
 		isHttpOnly = httpOnly[0]
 	}
 	c.data[key] = CookieItem{
-		value, domain, path, gtime.Second() + maxAge, isHttpOnly,
+		value, domain, path, gtime.Second() + int64(maxAge.Seconds()), isHttpOnly,
 	}
 }
 
@@ -110,7 +110,7 @@ func (c *Cookie) GetSessionId() string {
 	return c.Get(c.server.GetSessionIdName())
 }
 
-// 设置SessionId
+// 设置SessionId到Cookie中
 func (c *Cookie) SetSessionId(id string) {
 	c.Set(c.server.GetSessionIdName(), id)
 }
@@ -119,7 +119,7 @@ func (c *Cookie) SetSessionId(id string) {
 func (c *Cookie) Get(key string, def ...string) string {
 	c.init()
 	if r, ok := c.data[key]; ok {
-		if r.expire >= 0 {
+		if r.expireAt >= 0 {
 			return r.value
 		}
 	}
@@ -147,7 +147,7 @@ func (c *Cookie) Output() {
 	}
 	for k, v := range c.data {
 		// 只有 expire != 0 的才是服务端在本次请求中设置的cookie
-		if v.expire == 0 {
+		if v.expireAt == 0 {
 			continue
 		}
 		http.SetCookie(
@@ -157,7 +157,7 @@ func (c *Cookie) Output() {
 				Value:    v.value,
 				Domain:   v.domain,
 				Path:     v.path,
-				Expires:  time.Unix(int64(v.expire), 0),
+				Expires:  time.Unix(v.expireAt, 0),
 				HttpOnly: v.httpOnly,
 			},
 		)
diff --git a/net/ghttp/ghttp_server_handler.go b/net/ghttp/ghttp_server_handler.go
index ebf2fbd6f..8fd6f829a 100644
--- a/net/ghttp/ghttp_server_handler.go
+++ b/net/ghttp/ghttp_server_handler.go
@@ -139,6 +139,10 @@ func (s *Server) handleRequest(w http.ResponseWriter, r *http.Request) {
 	if !request.IsExited() {
 		s.callHookHandler(HOOK_BEFORE_OUTPUT, request)
 	}
+	// 设置Session Id到Cookie中
+	if request.Session.Id() != "" && request.GetSessionId() != request.Session.Id() {
+		request.Cookie.SetSessionId(request.Session.Id())
+	}
 	// 输出Cookie
 	request.Cookie.Output()
 	// 输出缓冲区
@@ -148,7 +152,7 @@ func (s *Server) handleRequest(w http.ResponseWriter, r *http.Request) {
 		s.callHookHandler(HOOK_AFTER_OUTPUT, request)
 	}
 	// 更新Session会话超时时间
-	request.Session.UpdateExpire()
+	request.Session.UpdateTTL()
 }
 
 // 查找静态文件的绝对路径
diff --git a/net/ghttp/ghttp_server_session.go b/net/ghttp/ghttp_server_session.go
index ceb3ef29e..3d7ec737a 100644
--- a/net/ghttp/ghttp_server_session.go
+++ b/net/ghttp/ghttp_server_session.go
@@ -6,329 +6,6 @@
 
 package ghttp
 
-import (
-	"encoding/json"
-	"strconv"
-	"strings"
-	"time"
+import "github.com/gogf/gf/os/gsession"
 
-	"github.com/gogf/gf/container/gmap"
-	"github.com/gogf/gf/container/gvar"
-	"github.com/gogf/gf/os/gtime"
-	"github.com/gogf/gf/util/gconv"
-	"github.com/gogf/gf/util/grand"
-)
-
-// SESSION对象，并发安全
-type Session struct {
-	id      string          // SessionId
-	data    *gmap.StrAnyMap // Session数据
-	dirty   bool            // 数据是否被修改
-	server  *Server         // 所属Server
-	request *Request        // 关联的请求
-}
-
-// 生成一个唯一的SessionId字符串，长度18位。
-func makeSessionId() string {
-	return strings.ToUpper(strconv.FormatInt(gtime.Nanosecond(), 36) + grand.Str(6))
-}
-
-// 获取或者生成一个session对象(延迟初始化)
-func GetSession(r *Request) *Session {
-	if r.Session != nil {
-		return r.Session
-	}
-	return &Session{
-		request: r,
-	}
-}
-
-// UpdateSession updates the session with custom map.
-func (s *Server) UpdateSession(id string, data map[string]interface{}) {
-	v := s.sessions.GetOrSetFuncLock(id, func() interface{} {
-		return gmap.NewStrAnyMap(true)
-	}, s.GetSessionMaxAge()*1000)
-	v.(*gmap.StrAnyMap).Sets(data)
-}
-
-// 延迟初始化
-func (s *Session) init() {
-	if len(s.id) == 0 {
-		s.server = s.request.Server
-		if id := s.request.GetSessionId(); id != "" {
-			if v := s.server.sessions.Get(id); v != nil {
-				// 纯内存查询
-				s.id = id
-				s.data = v.(*gmap.StrAnyMap)
-				return
-			} else {
-				// 持久化恢复
-				data := s.server.sessionStorage.Get([]byte(id))
-				if data != nil {
-					s.id = id
-					s.data = gmap.NewStrAnyMap(true)
-					if err := s.Restore(data); err != nil {
-						panic(err)
-					}
-					return
-				}
-			}
-		}
-		// 否则执行初始化创建
-		s.id = s.request.MakeSessionId()
-		s.data = gmap.NewStrAnyMap(true)
-		s.server.sessions.Set(s.id, s.data, s.server.GetSessionMaxAge()*1000)
-		s.dirty = true
-	}
-}
-
-// 获取/创建SessionId
-func (s *Session) Id() string {
-	s.init()
-	return s.id
-}
-
-// 获取当前session所有数据，注意是值拷贝
-func (s *Session) Map() map[string]interface{} {
-	if len(s.id) > 0 || s.request.GetSessionId() != "" {
-		s.init()
-		return s.data.Map()
-	}
-	return nil
-}
-
-// 获得session map大小
-func (s *Session) Size() int {
-	if len(s.id) > 0 || s.request.GetSessionId() != "" {
-		s.init()
-		return s.data.Size()
-	}
-	return 0
-}
-
-// 设置session
-func (s *Session) Set(key string, value interface{}) {
-	s.init()
-	s.data.Set(key, value)
-	s.dirty = true
-}
-
-// 批量设置
-func (s *Session) Sets(m map[string]interface{}) {
-	s.init()
-	s.data.Sets(m)
-	s.dirty = true
-}
-
-// 判断键名是否存在
-func (s *Session) Contains(key string) bool {
-	if len(s.id) > 0 || s.request.GetSessionId() != "" {
-		s.init()
-		return s.data.Contains(key)
-	}
-	return false
-}
-
-// 判断session是否有修改(包括新创建)
-func (s *Session) IsDirty() bool {
-	return s.dirty
-}
-
-// 删除指定session键值对
-func (s *Session) Remove(key string) {
-	if len(s.id) > 0 || s.request.GetSessionId() != "" {
-		s.init()
-		s.data.Remove(key)
-		s.dirty = true
-	}
-}
-
-// 将session数据导出为[]byte数据(目前使用json进行序列化)
-func (s *Session) Export() (data []byte, err error) {
-	if s.Size() > 0 {
-		data, err = json.Marshal(s.data)
-	}
-	return
-}
-
-// 从[]byte中恢复session数据(目前使用json进行序列化)
-func (s *Session) Restore(data []byte) (err error) {
-	if len(data) == 0 {
-		return nil
-	}
-	if len(s.id) > 0 || s.request.GetSessionId() != "" {
-		s.init()
-		s.data.LockFunc(func(m map[string]interface{}) {
-			err = json.Unmarshal(data, &m)
-		})
-	}
-	return
-}
-
-// 清空session
-func (s *Session) Clear() {
-	if len(s.id) > 0 || s.request.GetSessionId() != "" {
-		s.init()
-		s.data.Clear()
-		s.dirty = true
-	}
-}
-
-// 更新过期时间(如果用在守护进程中长期使用，需要手动调用进行更新，防止超时被清除)
-func (s *Session) UpdateExpire() {
-	if len(s.id) > 0 && s.data.Size() > 0 {
-		// 优先持久化存储
-		if s.dirty {
-			data, _ := s.Export()
-			err := s.server.sessionStorage.Set(
-				[]byte(s.id),
-				data,
-				time.Duration(s.server.GetSessionMaxAge())*time.Second,
-			)
-			if err != nil {
-				panic("saving session failed:" + err.Error())
-			}
-		}
-		// 其次更新内存TTL
-		s.server.sessions.Set(s.id, s.data, s.server.GetSessionMaxAge()*1000)
-	}
-}
-
-// 获取SESSION变量
-func (s *Session) Get(key string, def ...interface{}) interface{} {
-	if len(s.id) > 0 || s.request.GetSessionId() != "" {
-		s.init()
-		if v := s.data.Get(key); v != nil {
-			return v
-		}
-	}
-	if len(def) > 0 {
-		return def[0]
-	}
-	return nil
-}
-
-// 获取SESSION，建议都用该方法获取参数
-func (s *Session) GetVar(key string, def ...interface{}) *gvar.Var {
-	return gvar.New(s.Get(key, def...), true)
-}
-
-func (s *Session) GetString(key string, def ...interface{}) string {
-	return gconv.String(s.Get(key, def...))
-}
-
-func (s *Session) GetBool(key string, def ...interface{}) bool {
-	return gconv.Bool(s.Get(key, def...))
-}
-
-func (s *Session) GetInt(key string, def ...interface{}) int {
-	return gconv.Int(s.Get(key, def...))
-}
-
-func (s *Session) GetInt8(key string, def ...interface{}) int8 {
-	return gconv.Int8(s.Get(key, def...))
-}
-
-func (s *Session) GetInt16(key string, def ...interface{}) int16 {
-	return gconv.Int16(s.Get(key, def...))
-}
-
-func (s *Session) GetInt32(key string, def ...interface{}) int32 {
-	return gconv.Int32(s.Get(key, def...))
-}
-
-func (s *Session) GetInt64(key string, def ...interface{}) int64 {
-	return gconv.Int64(s.Get(key, def...))
-}
-
-func (s *Session) GetUint(key string, def ...interface{}) uint {
-	return gconv.Uint(s.Get(key, def...))
-}
-
-func (s *Session) GetUint8(key string, def ...interface{}) uint8 {
-	return gconv.Uint8(s.Get(key, def...))
-}
-
-func (s *Session) GetUint16(key string, def ...interface{}) uint16 {
-	return gconv.Uint16(s.Get(key, def...))
-}
-
-func (s *Session) GetUint32(key string, def ...interface{}) uint32 {
-	return gconv.Uint32(s.Get(key, def...))
-}
-
-func (s *Session) GetUint64(key string, def ...interface{}) uint64 {
-	return gconv.Uint64(s.Get(key, def...))
-}
-
-func (s *Session) GetFloat32(key string, def ...interface{}) float32 {
-	return gconv.Float32(s.Get(key, def...))
-}
-
-func (s *Session) GetFloat64(key string, def ...interface{}) float64 {
-	return gconv.Float64(s.Get(key, def...))
-}
-
-func (s *Session) GetBytes(key string, def ...interface{}) []byte {
-	return gconv.Bytes(s.Get(key, def...))
-}
-
-func (s *Session) GetInts(key string, def ...interface{}) []int {
-	return gconv.Ints(s.Get(key, def...))
-}
-
-func (s *Session) GetFloats(key string, def ...interface{}) []float64 {
-	return gconv.Floats(s.Get(key, def...))
-}
-
-func (s *Session) GetStrings(key string, def ...interface{}) []string {
-	return gconv.Strings(s.Get(key, def...))
-}
-
-func (s *Session) GetInterfaces(key string, def ...interface{}) []interface{} {
-	return gconv.Interfaces(s.Get(key, def...))
-}
-
-func (s *Session) GetTime(key string, format ...string) time.Time {
-	return gconv.Time(s.Get(key), format...)
-}
-
-func (s *Session) GetGTime(key string, format ...string) *gtime.Time {
-	return gconv.GTime(s.Get(key), format...)
-}
-
-func (s *Session) GetDuration(key string, def ...interface{}) time.Duration {
-	return gconv.Duration(s.Get(key, def...))
-}
-
-func (s *Session) GetMap(key string, tags ...string) map[string]interface{} {
-	return gconv.Map(s.Get(key), tags...)
-}
-
-func (s *Session) GetMapDeep(key string, tags ...string) map[string]interface{} {
-	return gconv.MapDeep(s.Get(key), tags...)
-}
-
-func (s *Session) GetMaps(key string, tags ...string) []map[string]interface{} {
-	return gconv.Maps(s.Get(key), tags...)
-}
-
-func (s *Session) GetMapsDeep(key string, tags ...string) []map[string]interface{} {
-	return gconv.MapsDeep(s.Get(key), tags...)
-}
-
-func (s *Session) GetStruct(key string, pointer interface{}, mapping ...map[string]string) error {
-	return gconv.Struct(s.Get(key), pointer, mapping...)
-}
-
-func (s *Session) GetStructDeep(key string, pointer interface{}, mapping ...map[string]string) error {
-	return gconv.StructDeep(s.Get(key), pointer, mapping...)
-}
-
-func (s *Session) GetStructs(key string, pointer interface{}, mapping ...map[string]string) error {
-	return gconv.Structs(s.Get(key), pointer, mapping...)
-}
-
-func (s *Session) GetStructsDeep(key string, pointer interface{}, mapping ...map[string]string) error {
-	return gconv.StructsDeep(s.Get(key), pointer, mapping...)
-}
+type Session = gsession.Session
diff --git a/os/gfile/gfile.go b/os/gfile/gfile.go
index c32e297bb..8942797e4 100644
--- a/os/gfile/gfile.go
+++ b/os/gfile/gfile.go
@@ -26,11 +26,13 @@ import (
 )
 
 const (
-	Separator     = string(filepath.Separator) // Separator for file system.
-	gDEFAULT_PERM = 0666                       // Default perm for file opening.
+	// Separator for file system.
+	Separator = string(filepath.Separator)
 )
 
 var (
+	// Default perm for file opening.
+	DefaultPerm = os.FileMode(0666)
 	// The absolute file path for main package.
 	// It can be only checked and set once.
 	mainPkgPath = gtype.NewString()
@@ -68,7 +70,7 @@ func OpenFile(path string, flag int, perm os.FileMode) (*os.File, error) {
 
 // OpenWithFlag opens file/directory with default perm and given <flag>.
 func OpenWithFlag(path string, flag int) (*os.File, error) {
-	f, err := os.OpenFile(path, flag, gDEFAULT_PERM)
+	f, err := os.OpenFile(path, flag, DefaultPerm)
 	if err != nil {
 		return nil, err
 	}
@@ -76,7 +78,7 @@ func OpenWithFlag(path string, flag int) (*os.File, error) {
 }
 
 // OpenWithFlagPerm opens file/directory with given <flag> and <perm>.
-func OpenWithFlagPerm(path string, flag int, perm int) (*os.File, error) {
+func OpenWithFlagPerm(path string, flag int, perm os.FileMode) (*os.File, error) {
 	f, err := os.OpenFile(path, flag, os.FileMode(perm))
 	if err != nil {
 		return nil, err
@@ -295,7 +297,7 @@ func Remove(path string) error {
 // IsReadable checks whether given <path> is readable.
 func IsReadable(path string) bool {
 	result := true
-	file, err := os.OpenFile(path, os.O_RDONLY, gDEFAULT_PERM)
+	file, err := os.OpenFile(path, os.O_RDONLY, DefaultPerm)
 	if err != nil {
 		result = false
 	}
@@ -319,7 +321,7 @@ func IsWritable(path string) bool {
 		}
 	} else {
 		// 如果是文件，那么判断文件是否可打开
-		file, err := os.OpenFile(path, os.O_WRONLY, gDEFAULT_PERM)
+		file, err := os.OpenFile(path, os.O_WRONLY, DefaultPerm)
 		if err != nil {
 			result = false
 		}
diff --git a/os/gfile/gfile_contents.go b/os/gfile/gfile_contents.go
index 96bdd7d66..4823e0f8b 100644
--- a/os/gfile/gfile_contents.go
+++ b/os/gfile/gfile_contents.go
@@ -12,9 +12,9 @@ import (
 	"os"
 )
 
-const (
+var (
 	// Buffer size for reading file content.
-	gREAD_BUFFER = 1024
+	DefaultReadBuffer = 1024
 )
 
 // GetContents returns the file content of <path> as string.
@@ -34,7 +34,7 @@ func GetBytes(path string) []byte {
 }
 
 // putContents puts binary content to file of <path>.
-func putContents(path string, data []byte, flag int, perm int) error {
+func putContents(path string, data []byte, flag int, perm os.FileMode) error {
 	// It supports creating file of <path> recursively.
 	dir := Dir(path)
 	if !Exists(dir) {
@@ -64,30 +64,30 @@ func Truncate(path string, size int) error {
 // PutContents puts string <content> to file of <path>.
 // It creates file of <path> recursively if it does not exist.
 func PutContents(path string, content string) error {
-	return putContents(path, []byte(content), os.O_WRONLY|os.O_CREATE|os.O_TRUNC, gDEFAULT_PERM)
+	return putContents(path, []byte(content), os.O_WRONLY|os.O_CREATE|os.O_TRUNC, DefaultPerm)
 }
 
 // PutContentsAppend appends string <content> to file of <path>.
 // It creates file of <path> recursively if it does not exist.
 func PutContentsAppend(path string, content string) error {
-	return putContents(path, []byte(content), os.O_WRONLY|os.O_CREATE|os.O_APPEND, gDEFAULT_PERM)
+	return putContents(path, []byte(content), os.O_WRONLY|os.O_CREATE|os.O_APPEND, DefaultPerm)
 }
 
 // PutBytes puts binary <content> to file of <path>.
 // It creates file of <path> recursively if it does not exist.
 func PutBytes(path string, content []byte) error {
-	return putContents(path, content, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, gDEFAULT_PERM)
+	return putContents(path, content, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, DefaultPerm)
 }
 
 // PutBytesAppend appends binary <content> to file of <path>.
 // It creates file of <path> recursively if it does not exist.
 func PutBytesAppend(path string, content []byte) error {
-	return putContents(path, content, os.O_WRONLY|os.O_CREATE|os.O_APPEND, gDEFAULT_PERM)
+	return putContents(path, content, os.O_WRONLY|os.O_CREATE|os.O_APPEND, DefaultPerm)
 }
 
 // GetNextCharOffset returns the file offset for given <char> starting from <start>.
 func GetNextCharOffset(reader io.ReaderAt, char byte, start int64) int64 {
-	buffer := make([]byte, gREAD_BUFFER)
+	buffer := make([]byte, DefaultReadBuffer)
 	offset := start
 	for {
 		if n, err := reader.ReadAt(buffer, offset); n > 0 {
@@ -107,7 +107,7 @@ func GetNextCharOffset(reader io.ReaderAt, char byte, start int64) int64 {
 // GetNextCharOffsetByPath returns the file offset for given <char> starting from <start>.
 // It opens file of <path> for reading with os.O_RDONLY flag and default perm.
 func GetNextCharOffsetByPath(path string, char byte, start int64) int64 {
-	if f, err := OpenWithFlagPerm(path, os.O_RDONLY, gDEFAULT_PERM); err == nil {
+	if f, err := OpenWithFlagPerm(path, os.O_RDONLY, DefaultPerm); err == nil {
 		defer f.Close()
 		return GetNextCharOffset(f, char, start)
 	}
@@ -131,7 +131,7 @@ func GetBytesTilChar(reader io.ReaderAt, char byte, start int64) ([]byte, int64)
 //
 // Note: Returned value contains the character of the last position.
 func GetBytesTilCharByPath(path string, char byte, start int64) ([]byte, int64) {
-	if f, err := OpenWithFlagPerm(path, os.O_RDONLY, gDEFAULT_PERM); err == nil {
+	if f, err := OpenWithFlagPerm(path, os.O_RDONLY, DefaultPerm); err == nil {
 		defer f.Close()
 		return GetBytesTilChar(f, char, start)
 	}
@@ -154,7 +154,7 @@ func GetBytesByTwoOffsets(reader io.ReaderAt, start int64, end int64) []byte {
 // it returns content range as [start, end).
 // It opens file of <path> for reading with os.O_RDONLY flag and default perm.
 func GetBytesByTwoOffsetsByPath(path string, start int64, end int64) []byte {
-	if f, err := OpenWithFlagPerm(path, os.O_RDONLY, gDEFAULT_PERM); err == nil {
+	if f, err := OpenWithFlagPerm(path, os.O_RDONLY, DefaultPerm); err == nil {
 		defer f.Close()
 		return GetBytesByTwoOffsets(f, start, end)
 	}
diff --git a/os/gfile/gfile_z_contents_test.go b/os/gfile/gfile_z_contents_test.go
index 93a4f28e1..3f1ad0d99 100644
--- a/os/gfile/gfile_z_contents_test.go
+++ b/os/gfile/gfile_z_contents_test.go
@@ -13,6 +13,8 @@ import (
 	"strings"
 	"testing"
 
+	"github.com/gogf/gf/text/gstr"
+
 	"github.com/gogf/gf/os/gfile"
 	"github.com/gogf/gf/test/gtest"
 )
@@ -54,7 +56,7 @@ func formatpath(paths string) string {
 
 // 指定返回要测试的目录
 func testpath() string {
-	return os.TempDir()
+	return gstr.TrimRight(os.TempDir(), "\\/")
 }
 
 func Test_GetContents(t *testing.T) {
diff --git a/os/gsession/gsession.go b/os/gsession/gsession.go
new file mode 100644
index 000000000..f2735feaa
--- /dev/null
+++ b/os/gsession/gsession.go
@@ -0,0 +1,21 @@
+// Copyright 2019 gf Author(https://github.com/gogf/gf). All Rights Reserved.
+//
+// This Source Code Form is subject to the terms of the MIT License.
+// If a copy of the MIT was not distributed with this file,
+// You can obtain one at https://github.com/gogf/gf.
+
+// Package gsession implements manager and storage features for sessions.
+package gsession
+
+import (
+	"strconv"
+	"strings"
+
+	"github.com/gogf/gf/os/gtime"
+	"github.com/gogf/gf/util/grand"
+)
+
+// NewSessionId creates and returns a new and unique session id string.
+func NewSessionId() string {
+	return strings.ToUpper(strconv.FormatInt(gtime.Nanosecond(), 36) + grand.Str(6))
+}
diff --git a/os/gsession/gsession_manager.go b/os/gsession/gsession_manager.go
new file mode 100644
index 000000000..dc2490e52
--- /dev/null
+++ b/os/gsession/gsession_manager.go
@@ -0,0 +1,65 @@
+// Copyright 2019 gf Author(https://github.com/gogf/gf). All Rights Reserved.
+//
+// This Source Code Form is subject to the terms of the MIT License.
+// If a copy of the MIT was not distributed with this file,
+// You can obtain one at https://github.com/gogf/gf.
+
+package gsession
+
+import (
+	"time"
+
+	"github.com/gogf/gf/os/gcache"
+)
+
+// Manager for sessions.
+type Manager struct {
+	ttl      time.Duration // TTL for sessions.
+	storage  Storage       // Storage interface for session storage Set/Get.
+	sessions *gcache.Cache // Session cache for session TTL.
+}
+
+// New creates and returns a new session manager.
+func New(ttl time.Duration, storage ...Storage) *Manager {
+	m := &Manager{
+		ttl:      ttl,
+		storage:  NewStorageFile(ttl),
+		sessions: gcache.New(),
+	}
+	if len(storage) > 0 && storage[0] != nil {
+		m.storage = storage[0]
+	}
+	return m
+}
+
+// New creates or fetches the session for given session id.
+func (m *Manager) New(sessionId ...string) *Session {
+	var id string
+	if len(sessionId) > 0 && sessionId[0] != "" {
+		id = sessionId[0]
+	}
+	// NOTE:
+	// We CANNOT creates and stores it directory to manager
+	// as it might be a fake and invalid session id
+	// which would consumes your memory as much as possible.
+	return &Session{
+		id:      id,
+		manager: m,
+	}
+}
+
+// SetStorage sets the session storage for manager.
+func (m *Manager) SetStorage(storage Storage) {
+	m.storage = storage
+}
+
+// TTL returns the TTL of the session manager.
+func (m *Manager) TTL() time.Duration {
+	return m.ttl
+}
+
+// UpdateTTL updates the ttl for given session.
+// If this session is dirty, it also exports it to storage.
+func (m *Manager) UpdateTTL(id string, session *Session) {
+	m.sessions.Set(id, session, m.ttl)
+}
diff --git a/os/gsession/gsession_session.go b/os/gsession/gsession_session.go
new file mode 100644
index 000000000..5a753ce7f
--- /dev/null
+++ b/os/gsession/gsession_session.go
@@ -0,0 +1,285 @@
+// Copyright 2019 gf Author(https://github.com/gogf/gf). All Rights Reserved.
+//
+// This Source Code Form is subject to the terms of the MIT License.
+// If a copy of the MIT was not distributed with this file,
+// You can obtain one at https://github.com/gogf/gf.
+
+package gsession
+
+import (
+	"encoding/json"
+	"time"
+
+	"github.com/gogf/gf/container/gtype"
+
+	"github.com/gogf/gf/container/gmap"
+	"github.com/gogf/gf/container/gvar"
+	"github.com/gogf/gf/os/gtime"
+	"github.com/gogf/gf/util/gconv"
+)
+
+// Session struct for storing single session data.
+type Session struct {
+	id      string          // Session id.
+	data    *gmap.StrAnyMap // Session data.
+	dirty   *gtype.Bool     // Used to mark session is modified.
+	manager *Manager        // Parent manager.
+}
+
+// init does the delay initialization for session.
+// It here to initialization real session if necessary.
+func (s *Session) init() {
+	s.dirty = gtype.NewBool(false)
+	if len(s.id) > 0 && s.data == nil {
+		if data := s.manager.storage.Get(s.id); data != nil {
+			if s.data = gmap.NewStrAnyMapFrom(data, true); s.data == nil {
+				panic("session restoring failed for id:" + s.id)
+			}
+			return
+		} else {
+			// Invalid or expired session id,
+			// it should create a new one.
+			s.id = ""
+		}
+	}
+	if len(s.id) == 0 {
+		s.id = NewSessionId()
+		s.data = gmap.NewStrAnyMap(true)
+	}
+}
+
+// Id returns the session id for this session.
+// It might be empty if session is not actually used.
+func (s *Session) Id() string {
+	return s.id
+}
+
+// Map returns all data as map.
+// Note that it's using value copy internally for concurrent-safe purpose.
+func (s *Session) Map() map[string]interface{} {
+	if len(s.id) > 0 {
+		s.init()
+		return s.data.Map()
+	}
+	return nil
+}
+
+// Size returns the size of the session.
+func (s *Session) Size() int {
+	if len(s.id) > 0 {
+		s.init()
+		return s.data.Size()
+	}
+	return 0
+}
+
+// Set sets key-value pair to this session.
+func (s *Session) Set(key string, value interface{}) {
+	s.init()
+	s.data.Set(key, value)
+	s.dirty.Set(true)
+}
+
+// Sets batch sets the session using map.
+func (s *Session) Sets(m map[string]interface{}) {
+	s.init()
+	s.data.Sets(m)
+	s.dirty.Set(true)
+}
+
+// Contains checks whether key exist in the session.
+func (s *Session) Contains(key string) bool {
+	s.init()
+	return s.data.Contains(key)
+}
+
+// IsDirty checks whether there's any data changes in the session.
+func (s *Session) IsDirty() bool {
+	return s.dirty.Val()
+}
+
+// Remove removes key along with its value from this session.
+func (s *Session) Remove(key string) {
+	s.init()
+	s.data.Remove(key)
+	s.dirty.Set(true)
+}
+
+// Restore un-serializes the data and restore the session from it.
+func (s *Session) Restore(data []byte) (err error) {
+	if len(data) == 0 {
+		return nil
+	}
+	s.init()
+	s.data.LockFunc(func(m map[string]interface{}) {
+		err = json.Unmarshal(data, &m)
+	})
+	return
+}
+
+// Clear deletes all key-value pairs from this session.
+func (s *Session) Clear() {
+	if len(s.id) > 0 {
+		s.init()
+		s.data.Clear()
+		s.dirty.Set(true)
+	}
+}
+
+// UpdateTTL updates the ttl of the session.
+// If this session is dirty, it also exports it to storage.
+func (s *Session) UpdateTTL() {
+	if len(s.id) > 0 && s.data != nil && s.data.Size() > 0 {
+		if s.manager.storage != nil {
+			if s.dirty.Cas(true, false) {
+				s.data.RLockFunc(func(m map[string]interface{}) {
+					if err := s.manager.storage.Set(s.id, m); err != nil {
+						panic(err)
+					}
+				})
+			} else {
+				if err := s.manager.storage.UpdateTTL(s.id); err != nil {
+					panic(err)
+				}
+			}
+		}
+		s.manager.UpdateTTL(s.id, s)
+	}
+}
+
+func (s *Session) Get(key string, def ...interface{}) interface{} {
+	if len(s.id) > 0 {
+		s.init()
+		if v := s.data.Get(key); v != nil {
+			return v
+		}
+	}
+	if len(def) > 0 {
+		return def[0]
+	}
+	return nil
+}
+
+func (s *Session) GetVar(key string, def ...interface{}) *gvar.Var {
+	return gvar.New(s.Get(key, def...), true)
+}
+
+func (s *Session) GetString(key string, def ...interface{}) string {
+	return gconv.String(s.Get(key, def...))
+}
+
+func (s *Session) GetBool(key string, def ...interface{}) bool {
+	return gconv.Bool(s.Get(key, def...))
+}
+
+func (s *Session) GetInt(key string, def ...interface{}) int {
+	return gconv.Int(s.Get(key, def...))
+}
+
+func (s *Session) GetInt8(key string, def ...interface{}) int8 {
+	return gconv.Int8(s.Get(key, def...))
+}
+
+func (s *Session) GetInt16(key string, def ...interface{}) int16 {
+	return gconv.Int16(s.Get(key, def...))
+}
+
+func (s *Session) GetInt32(key string, def ...interface{}) int32 {
+	return gconv.Int32(s.Get(key, def...))
+}
+
+func (s *Session) GetInt64(key string, def ...interface{}) int64 {
+	return gconv.Int64(s.Get(key, def...))
+}
+
+func (s *Session) GetUint(key string, def ...interface{}) uint {
+	return gconv.Uint(s.Get(key, def...))
+}
+
+func (s *Session) GetUint8(key string, def ...interface{}) uint8 {
+	return gconv.Uint8(s.Get(key, def...))
+}
+
+func (s *Session) GetUint16(key string, def ...interface{}) uint16 {
+	return gconv.Uint16(s.Get(key, def...))
+}
+
+func (s *Session) GetUint32(key string, def ...interface{}) uint32 {
+	return gconv.Uint32(s.Get(key, def...))
+}
+
+func (s *Session) GetUint64(key string, def ...interface{}) uint64 {
+	return gconv.Uint64(s.Get(key, def...))
+}
+
+func (s *Session) GetFloat32(key string, def ...interface{}) float32 {
+	return gconv.Float32(s.Get(key, def...))
+}
+
+func (s *Session) GetFloat64(key string, def ...interface{}) float64 {
+	return gconv.Float64(s.Get(key, def...))
+}
+
+func (s *Session) GetBytes(key string, def ...interface{}) []byte {
+	return gconv.Bytes(s.Get(key, def...))
+}
+
+func (s *Session) GetInts(key string, def ...interface{}) []int {
+	return gconv.Ints(s.Get(key, def...))
+}
+
+func (s *Session) GetFloats(key string, def ...interface{}) []float64 {
+	return gconv.Floats(s.Get(key, def...))
+}
+
+func (s *Session) GetStrings(key string, def ...interface{}) []string {
+	return gconv.Strings(s.Get(key, def...))
+}
+
+func (s *Session) GetInterfaces(key string, def ...interface{}) []interface{} {
+	return gconv.Interfaces(s.Get(key, def...))
+}
+
+func (s *Session) GetTime(key string, format ...string) time.Time {
+	return gconv.Time(s.Get(key), format...)
+}
+
+func (s *Session) GetGTime(key string, format ...string) *gtime.Time {
+	return gconv.GTime(s.Get(key), format...)
+}
+
+func (s *Session) GetDuration(key string, def ...interface{}) time.Duration {
+	return gconv.Duration(s.Get(key, def...))
+}
+
+func (s *Session) GetMap(key string, tags ...string) map[string]interface{} {
+	return gconv.Map(s.Get(key), tags...)
+}
+
+func (s *Session) GetMapDeep(key string, tags ...string) map[string]interface{} {
+	return gconv.MapDeep(s.Get(key), tags...)
+}
+
+func (s *Session) GetMaps(key string, tags ...string) []map[string]interface{} {
+	return gconv.Maps(s.Get(key), tags...)
+}
+
+func (s *Session) GetMapsDeep(key string, tags ...string) []map[string]interface{} {
+	return gconv.MapsDeep(s.Get(key), tags...)
+}
+
+func (s *Session) GetStruct(key string, pointer interface{}, mapping ...map[string]string) error {
+	return gconv.Struct(s.Get(key), pointer, mapping...)
+}
+
+func (s *Session) GetStructDeep(key string, pointer interface{}, mapping ...map[string]string) error {
+	return gconv.StructDeep(s.Get(key), pointer, mapping...)
+}
+
+func (s *Session) GetStructs(key string, pointer interface{}, mapping ...map[string]string) error {
+	return gconv.Structs(s.Get(key), pointer, mapping...)
+}
+
+func (s *Session) GetStructsDeep(key string, pointer interface{}, mapping ...map[string]string) error {
+	return gconv.StructsDeep(s.Get(key), pointer, mapping...)
+}
diff --git a/os/gsession/gsession_storage.go b/os/gsession/gsession_storage.go
new file mode 100644
index 000000000..12a0b8ea5
--- /dev/null
+++ b/os/gsession/gsession_storage.go
@@ -0,0 +1,17 @@
+// Copyright 2019 gf Author(https://github.com/gogf/gf). All Rights Reserved.
+//
+// This Source Code Form is subject to the terms of the MIT License.
+// If a copy of the MIT was not distributed with this file,
+// You can obtain one at https://github.com/gogf/gf.
+
+package gsession
+
+type Storage interface {
+	// Get returns the session data bytes for given session id.
+	Get(id string) map[string]interface{}
+	// Set updates the content for session id.
+	// Note that the parameter <content> is the serialized bytes for session map.
+	Set(id string, data map[string]interface{}) error
+	// UpdateTTL updates the TTL for session id.
+	UpdateTTL(id string) error
+}
diff --git a/os/gsession/gsession_storage_file.go b/os/gsession/gsession_storage_file.go
new file mode 100644
index 000000000..c65b228d3
--- /dev/null
+++ b/os/gsession/gsession_storage_file.go
@@ -0,0 +1,147 @@
+// Copyright 2019 gf Author(https://github.com/gogf/gf). All Rights Reserved.
+//
+// This Source Code Form is subject to the terms of the MIT License.
+// If a copy of the MIT was not distributed with this file,
+// You can obtain one at https://github.com/gogf/gf.
+
+package gsession
+
+import (
+	"encoding/json"
+	"os"
+	"time"
+
+	"github.com/gogf/gf/crypto/gaes"
+
+	"github.com/gogf/gf/os/gtimer"
+
+	"github.com/gogf/gf/container/gset"
+	"github.com/gogf/gf/encoding/gbinary"
+
+	"github.com/gogf/gf/os/gtime"
+
+	"github.com/gogf/gf/os/glog"
+
+	"github.com/gogf/gf/os/gfile"
+)
+
+// StorageFile implements the Session Storage interface with file system.
+type StorageFile struct {
+	ttl           time.Duration
+	path          string
+	updatingIdSet *gset.StrSet
+}
+
+var (
+	DefaultStorageFilePath         = gfile.Join(gfile.TempDir(), "gsessions")
+	DefaultStorageFileCryptoKey    = []byte("Session storage file crypto key!")
+	DefaultStorageFileLoopInterval = 5 * time.Second
+)
+
+func init() {
+	tmpPath := "/tmp"
+	if gfile.Exists(tmpPath) && gfile.IsWritable(tmpPath) {
+		DefaultStorageFilePath = gfile.Join(tmpPath, "gsessions")
+	}
+}
+
+func NewStorageFile(ttl time.Duration, path ...string) *StorageFile {
+	storagePath := DefaultStorageFilePath
+	if len(path) > 0 && path[0] != "" {
+		storagePath, _ = gfile.Search(path[0])
+		if storagePath == "" {
+			glog.Panicf("'%s' does not exist", path[0])
+		}
+		if !gfile.IsWritable(storagePath) {
+			glog.Panicf("'%s' is not writable", path[0])
+		}
+	}
+	s := &StorageFile{
+		ttl:           ttl,
+		path:          storagePath,
+		updatingIdSet: gset.NewStrSet(true),
+	}
+	gtimer.AddSingleton(DefaultStorageFileLoopInterval, func() {
+		var err error
+		s.updatingIdSet.Iterator(func(v string) bool {
+			if err = s.doUpdateTTL(v); err != nil {
+				panic(err)
+			}
+			return true
+		})
+	})
+	return s
+}
+
+func (s *StorageFile) sessionFilePath(id string) string {
+	return gfile.Join(s.path, id)
+}
+
+// Get return the session data for given session id.
+func (s *StorageFile) Get(id string) map[string]interface{} {
+	path := s.sessionFilePath(id)
+	data := gfile.GetBytes(path)
+	if len(data) > 8 {
+		timestamp := gbinary.DecodeToInt64(data[:8])
+		if timestamp+int64(s.ttl.Seconds()) < gtime.Second() {
+			return nil
+		}
+		// Decrypt with AES.
+		content, err := gaes.Decrypt(data[8:], DefaultStorageFileCryptoKey)
+		if err != nil {
+			return nil
+		}
+		var m map[string]interface{}
+		if err := json.Unmarshal(content, &m); err != nil {
+			return nil
+		}
+		return m
+	}
+	return nil
+}
+
+// Set updates the content for session id.
+// Note that the parameter <content> is the serialized bytes for session map.
+func (s *StorageFile) Set(id string, data map[string]interface{}) error {
+	path := s.sessionFilePath(id)
+	content, err := json.Marshal(data)
+	if err != nil {
+		return err
+	}
+	// Encrypt with AES.
+	content, err = gaes.Encrypt(content, DefaultStorageFileCryptoKey)
+	if err != nil {
+		return err
+	}
+	file, err := gfile.OpenWithFlag(path, os.O_WRONLY|os.O_CREATE|os.O_TRUNC)
+	if err != nil {
+		return err
+	}
+	if _, err = file.Write(gbinary.EncodeInt64(gtime.Second())); err != nil {
+		return err
+	}
+	if _, err = file.Write(content); err != nil {
+		return err
+	}
+	return file.Close()
+}
+
+// UpdateTTL updates the TTL for session id.
+// It just adds the session id to the async handling queue.
+func (s *StorageFile) UpdateTTL(id string) error {
+	s.updatingIdSet.Add(id)
+	return nil
+}
+
+// doUpdateTTL updates the TTL for session id.
+func (s *StorageFile) doUpdateTTL(id string) error {
+	path := s.sessionFilePath(id)
+	file, err := gfile.OpenWithFlag(path, os.O_WRONLY)
+	if err != nil {
+		return err
+	}
+	if _, err = file.Write(gbinary.EncodeInt64(gtime.Second())); err != nil {
+		return err
+	}
+	return file.Close()
+}