diff --git a/src/db/common.go b/src/db/common.go
index c784d60..32917ea 100644
--- a/src/db/common.go
+++ b/src/db/common.go
@@ -4,8 +4,6 @@ import (
 	"errors"
 	"fmt"
 	"reflect"
-
-	"github.com/ihexxa/quickshare/src/db/sitestore"
 )
 
 const (
@@ -16,6 +14,8 @@ const (
 	ShareIDNs = "sharingKey"
 
 	uploadsPrefix = "uploads"
+
+	KeyInitTime = "keyInitTime"
 )
 
 var (
@@ -40,13 +40,27 @@ type Quota struct {
 }
 
 type Preferences struct {
-	Bg         *sitestore.BgConfig `json:"bg"`
-	CSSURL     string              `json:"cssURL"`
-	LanPackURL string              `json:"lanPackURL"`
-	Lan        string              `json:"lan"`
-	Theme      string              `json:"theme"`
-	Avatar     string              `json:"avatar"`
-	Email      string              `json:"email"`
+	Bg         *BgConfig `json:"bg"`
+	CSSURL     string    `json:"cssURL"`
+	LanPackURL string    `json:"lanPackURL"`
+	Lan        string    `json:"lan"`
+	Theme      string    `json:"theme"`
+	Avatar     string    `json:"avatar"`
+	Email      string    `json:"email"`
+}
+
+type ClientConfig struct {
+	SiteName string    `json:"siteName" yaml:"siteName"`
+	SiteDesc string    `json:"siteDesc" yaml:"siteDesc"`
+	Bg       *BgConfig `json:"bg" yaml:"bg"`
+}
+
+type BgConfig struct {
+	Url      string `json:"url" yaml:"url"`
+	Repeat   string `json:"repeat" yaml:"repeat"`
+	Position string `json:"position" yaml:"position"`
+	Align    string `json:"align" yaml:"align"`
+	BgColor  string `json:"bgColor" yaml:"bgColor"`
 }
 
 func ComparePreferences(p1, p2 *Preferences) bool {
diff --git a/src/db/fileinfostore/file_info_store.go b/src/db/fileinfostore/file_info_store.go
index 5f61fdf..59e81b8 100644
--- a/src/db/fileinfostore/file_info_store.go
+++ b/src/db/fileinfostore/file_info_store.go
@@ -30,10 +30,6 @@ var (
 	maxHashingTime     = 10
 )
 
-func IsNotFound(err error) bool {
-	return err == ErrNotFound
-}
-
 type IFileInfoStore interface {
 	AddSharing(dirPath string) error
 	DelSharing(dirPath string) error
@@ -89,7 +85,7 @@ func (fi *FileInfoStore) AddSharing(dirPath string) error {
 
 	info, err := fi.GetInfo(dirPath)
 	if err != nil {
-		if !IsNotFound(err) {
+		if !errors.Is(err, ErrNotFound) {
 			return err
 		}
 		info = &db.FileInfo{
@@ -199,7 +195,7 @@ func (fi *FileInfoStore) GetInfos(itemPaths []string) (map[string]*db.FileInfo,
 	for _, itemPath := range itemPaths {
 		info, err := fi.GetInfo(itemPath)
 		if err != nil {
-			if !IsNotFound(err) {
+			if !errors.Is(err, ErrNotFound) {
 				return nil, err
 			}
 			continue
@@ -233,7 +229,7 @@ func (fi *FileInfoStore) SetSha1(itemPath, sign string) error {
 
 	info, err := fi.GetInfo(itemPath)
 	if err != nil {
-		if !IsNotFound(err) {
+		if !errors.Is(err, ErrNotFound) {
 			return err
 		}
 		info = &db.FileInfo{
diff --git a/src/db/sitestore/site_store.go b/src/db/sitestore/site_store.go
index 5800519..00ef2e6 100644
--- a/src/db/sitestore/site_store.go
+++ b/src/db/sitestore/site_store.go
@@ -3,49 +3,28 @@ package sitestore
 import (
 	"encoding/json"
 	"errors"
-	"fmt"
 	"sync"
-	"time"
 
+	"github.com/ihexxa/quickshare/src/db"
 	"github.com/ihexxa/quickshare/src/kvstore"
 )
 
 const (
-	InitNs      = "SiteInit"
-	SiteNs      = "Site"
-	InitTimeKey = "initTime"
-	SiteCfgKey  = "siteCfg"
+	NsSite     = "NsSite"
+	KeySiteCfg = "KeySiteCfg"
 )
 
 var (
 	ErrNotFound = errors.New("site config not found")
 )
 
-func IsNotFound(err error) bool {
-	return err == ErrNotFound
-}
-
 type ISiteStore interface {
-	SetClientCfg(cfg *ClientConfig) error
+	SetClientCfg(cfg *db.ClientConfig) error
 	GetCfg() (*SiteConfig, error)
 }
 
-type ClientConfig struct {
-	SiteName string    `json:"siteName" yaml:"siteName"`
-	SiteDesc string    `json:"siteDesc" yaml:"siteDesc"`
-	Bg       *BgConfig `json:"bg" yaml:"bg"`
-}
-
-type BgConfig struct {
-	Url      string `json:"url" yaml:"url"`
-	Repeat   string `json:"repeat" yaml:"repeat"`
-	Position string `json:"position" yaml:"position"`
-	Align    string `json:"align" yaml:"align"`
-	BgColor  string `json:"bgColor" yaml:"bgColor"`
-}
-
 type SiteConfig struct {
-	ClientCfg *ClientConfig `json:"clientCfg" yaml:"clientCfg"`
+	ClientCfg *db.ClientConfig `json:"clientCfg" yaml:"clientCfg"`
 }
 
 type SiteStore struct {
@@ -61,65 +40,59 @@ func NewSiteStore(store kvstore.IKVStore) (*SiteStore, error) {
 }
 
 func (st *SiteStore) Init(cfg *SiteConfig) error {
-	_, ok := st.store.GetStringIn(InitNs, InitTimeKey)
+	_, ok := st.store.GetStringIn(NsSite, KeySiteCfg)
 	if !ok {
 		var err error
-		for _, nsName := range []string{
-			InitNs,
-			SiteNs,
-		} {
-			if err = st.store.AddNamespace(nsName); err != nil {
-				return err
-			}
-		}
-
-		// TODO: replace following with setConfig
-		err = st.SetClientCfg(cfg.ClientCfg)
-		if err != nil {
+		if err = st.store.AddNamespace(NsSite); err != nil {
 			return err
 		}
-		err = st.store.SetStringIn(InitNs, InitTimeKey, fmt.Sprintf("%d", time.Now().Unix()))
+
+		err = st.setCfg(cfg)
 		if err != nil {
 			return err
 		}
 	}
-
 	return nil
 }
 
-func (st *SiteStore) SetClientCfg(cfg *ClientConfig) error {
-	st.mtx.Lock()
-	defer st.mtx.Unlock()
-
-	siteCfg := &SiteConfig{}
-	cfgStr, ok := st.store.GetStringIn(SiteNs, SiteCfgKey)
-	if ok {
-		err := json.Unmarshal([]byte(cfgStr), siteCfg)
-		if err != nil {
-			return err
-		}
+func (st *SiteStore) getCfg() (*SiteConfig, error) {
+	cfgStr, ok := st.store.GetStringIn(NsSite, KeySiteCfg)
+	if !ok {
+		return nil, ErrNotFound
 	}
-	siteCfg.ClientCfg = cfg
 
-	cfgBytes, err := json.Marshal(siteCfg)
+	cfg := &SiteConfig{}
+	err := json.Unmarshal([]byte(cfgStr), cfg)
+	if err != nil {
+		return nil, err
+	}
+	return cfg, nil
+}
+
+func (st *SiteStore) setCfg(cfg *SiteConfig) error {
+	cfgBytes, err := json.Marshal(cfg)
 	if err != nil {
 		return err
 	}
-	return st.store.SetStringIn(SiteNs, SiteCfgKey, string(cfgBytes))
+	return st.store.SetStringIn(NsSite, KeySiteCfg, string(cfgBytes))
+}
+
+func (st *SiteStore) SetClientCfg(cfg *db.ClientConfig) error {
+	st.mtx.Lock()
+	defer st.mtx.Unlock()
+
+	siteCfg, err := st.getCfg()
+	if err != nil {
+		return err
+	}
+	siteCfg.ClientCfg = cfg
+
+	return st.setCfg(siteCfg)
 }
 
 func (st *SiteStore) GetCfg() (*SiteConfig, error) {
 	st.mtx.RLock()
 	defer st.mtx.RUnlock()
 
-	cfgStr, ok := st.store.GetStringIn(SiteNs, SiteCfgKey)
-	if !ok {
-		return nil, ErrNotFound
-	}
-	siteCfg := &SiteConfig{}
-	err := json.Unmarshal([]byte(cfgStr), siteCfg)
-	if err != nil {
-		return nil, err
-	}
-	return siteCfg, nil
+	return st.getCfg()
 }
diff --git a/src/db/sitestore/site_store_test.go b/src/db/sitestore/site_store_test.go
index 162a4e6..4515fce 100644
--- a/src/db/sitestore/site_store_test.go
+++ b/src/db/sitestore/site_store_test.go
@@ -7,6 +7,7 @@ import (
 	"reflect"
 	"testing"
 
+	"github.com/ihexxa/quickshare/src/db"
 	"github.com/ihexxa/quickshare/src/kvstore/boltdbpvd"
 )
 
@@ -14,10 +15,10 @@ func TestSiteStore(t *testing.T) {
 
 	testSiteMethods := func(t *testing.T, store ISiteStore) {
 		siteCfg := &SiteConfig{
-			ClientCfg: &ClientConfig{
+			ClientCfg: &db.ClientConfig{
 				SiteName: "quickshare",
 				SiteDesc: "simpel file sharing",
-				Bg: &BgConfig{
+				Bg: &db.BgConfig{
 					Url:      "/imgs/bg.jpg",
 					Repeat:   "no-repeat",
 					Position: "fixed",
@@ -55,10 +56,10 @@ func TestSiteStore(t *testing.T) {
 			t.Fatal("fail to new kvstore", err)
 		}
 		err = store.Init(&SiteConfig{
-			ClientCfg: &ClientConfig{
+			ClientCfg: &db.ClientConfig{
 				SiteName: "",
 				SiteDesc: "",
-				Bg: &BgConfig{
+				Bg: &db.BgConfig{
 					Url:      "",
 					Repeat:   "",
 					Position: "",
diff --git a/src/db/userstore/user_store.go b/src/db/userstore/user_store.go
index 6462483..726e9d9 100644
--- a/src/db/userstore/user_store.go
+++ b/src/db/userstore/user_store.go
@@ -8,7 +8,6 @@ import (
 	"time"
 
 	"github.com/ihexxa/quickshare/src/db"
-	"github.com/ihexxa/quickshare/src/db/sitestore"
 	"github.com/ihexxa/quickshare/src/kvstore"
 )
 
@@ -35,7 +34,7 @@ var (
 	ErrNotFound     = errors.New("not found")
 
 	DefaultPreferences = db.Preferences{
-		Bg: &sitestore.BgConfig{
+		Bg: &db.BgConfig{
 			Url:      "",
 			Repeat:   "no-repeat",
 			Position: "center",
@@ -51,14 +50,10 @@ var (
 	}
 )
 
-func IsReachedLimitErr(err error) bool {
-	return err == ErrReachedLimit
-}
-
 type UserCfg struct {
-	Name string `json:"name"`
-	Role string `json:"role"`
-	Pwd  string `json:"pwd"`
+	Name string `json:"name" yaml:"name"`
+	Role string `json:"role" yaml:"role"`
+	Pwd  string `json:"pwd" yaml:"pwd"`
 }
 
 type IUserStore interface {
diff --git a/src/db/userstore/user_store_test.go b/src/db/userstore/user_store_test.go
index 1b7365f..e69a034 100644
--- a/src/db/userstore/user_store_test.go
+++ b/src/db/userstore/user_store_test.go
@@ -186,7 +186,7 @@ func TestUserStores(t *testing.T) {
 		}
 
 		newPrefer := &db.Preferences{
-			Bg: &sitestore.BgConfig{
+			Bg: &db.BgConfig{
 				Url:      "/url",
 				Repeat:   "repeat",
 				Position: "pos",
diff --git a/src/handlers/settings/handlers.go b/src/handlers/settings/handlers.go
index d0c7294..1885025 100644
--- a/src/handlers/settings/handlers.go
+++ b/src/handlers/settings/handlers.go
@@ -6,7 +6,7 @@ import (
 	"github.com/gin-gonic/gin"
 	"github.com/ihexxa/gocfg"
 
-	"github.com/ihexxa/quickshare/src/db/sitestore"
+	"github.com/ihexxa/quickshare/src/db"
 	"github.com/ihexxa/quickshare/src/depidx"
 	q "github.com/ihexxa/quickshare/src/handlers"
 )
@@ -29,10 +29,10 @@ func (h *SettingsSvc) Health(c *gin.Context) {
 }
 
 type ClientCfgMsg struct {
-	SiteName       string              `json:"siteName"`
-	SiteDesc       string              `json:"siteDesc"`
-	Bg             *sitestore.BgConfig `json:"bg"`
-	CaptchaEnabled bool                `json:"captchaEnabled"`
+	SiteName       string       `json:"siteName"`
+	SiteDesc       string       `json:"siteDesc"`
+	Bg             *db.BgConfig `json:"bg"`
+	CaptchaEnabled bool         `json:"captchaEnabled"`
 }
 
 func (h *SettingsSvc) GetClientCfg(c *gin.Context) {
@@ -59,7 +59,7 @@ func (h *SettingsSvc) SetClientCfg(c *gin.Context) {
 		return
 	}
 
-	clientCfg := &sitestore.ClientConfig{
+	clientCfg := &db.ClientConfig{
 		SiteName: req.SiteName,
 		SiteDesc: req.SiteDesc,
 		Bg:       req.Bg,
@@ -78,7 +78,7 @@ func (h *SettingsSvc) SetClientCfg(c *gin.Context) {
 	c.JSON(q.Resp(200))
 }
 
-func validateClientCfg(cfg *sitestore.ClientConfig) error {
+func validateClientCfg(cfg *db.ClientConfig) error {
 	if cfg.SiteName == "" {
 		return errors.New("site name is empty")
 	}
diff --git a/src/server/config.go b/src/server/config.go
index e7d9117..13a9363 100644
--- a/src/server/config.go
+++ b/src/server/config.go
@@ -3,6 +3,7 @@ package server
 import (
 	"encoding/json"
 
+	"github.com/ihexxa/quickshare/src/db"
 	"github.com/ihexxa/quickshare/src/db/sitestore"
 	"github.com/ihexxa/quickshare/src/db/userstore"
 )
@@ -120,10 +121,10 @@ func DefaultConfigStruct() *Config {
 			WorkerCount: 2,
 		},
 		Site: &sitestore.SiteConfig{
-			ClientCfg: &sitestore.ClientConfig{
+			ClientCfg: &db.ClientConfig{
 				SiteName: "Quickshare",
 				SiteDesc: "quick and simple file sharing",
-				Bg: &sitestore.BgConfig{
+				Bg: &db.BgConfig{
 					Url:      "/static/img/textured_paper.png",
 					Repeat:   "repeat",
 					Position: "fixed",
diff --git a/src/server/config_load.go b/src/server/config_load.go
index 7b3640d..95aefd1 100644
--- a/src/server/config_load.go
+++ b/src/server/config_load.go
@@ -2,6 +2,7 @@ package server
 
 import (
 	"encoding/json"
+	"errors"
 	"fmt"
 	"os"
 	"strings"
@@ -41,6 +42,9 @@ func LoadCfg(args *Args) (*gocfg.Cfg, error) {
 		_, err := os.Stat(dbPath)
 		if err == nil {
 			cfg, err = mergeDbConfig(cfg, dbPath)
+			if err != nil {
+				return nil, err
+			}
 		} else if err != nil {
 			if !os.IsNotExist(err) {
 				return nil, err
@@ -64,8 +68,12 @@ func mergeDbConfig(cfg *gocfg.Cfg, dbPath string) (*gocfg.Cfg, error) {
 
 	clientCfg, err := siteStore.GetCfg()
 	if err != nil {
+		if errors.Is(err, sitestore.ErrNotFound) {
+			return cfg, nil
+		}
 		return nil, err
 	}
+
 	clientCfgBytes, err := json.Marshal(clientCfg)
 	if err != nil {
 		return nil, err
diff --git a/src/server/config_load_test.go b/src/server/config_load_test.go
index 0aad2b8..4ea0a1a 100644
--- a/src/server/config_load_test.go
+++ b/src/server/config_load_test.go
@@ -7,6 +7,7 @@ import (
 
 	"github.com/ihexxa/gocfg"
 
+	"github.com/ihexxa/quickshare/src/db"
 	"github.com/ihexxa/quickshare/src/db/sitestore"
 	"github.com/ihexxa/quickshare/src/db/userstore"
 )
@@ -111,10 +112,10 @@ func TestLoadCfg(t *testing.T) {
 			WorkerCount: 1,
 		},
 		Site: &sitestore.SiteConfig{
-			ClientCfg: &sitestore.ClientConfig{
+			ClientCfg: &db.ClientConfig{
 				SiteName: "1",
 				SiteDesc: "1",
-				Bg: &sitestore.BgConfig{
+				Bg: &db.BgConfig{
 					Url:      "1",
 					Repeat:   "1",
 					Position: "1",
@@ -177,10 +178,10 @@ func TestLoadCfg(t *testing.T) {
 			WorkerCount: 4,
 		},
 		Site: &sitestore.SiteConfig{
-			ClientCfg: &sitestore.ClientConfig{
+			ClientCfg: &db.ClientConfig{
 				SiteName: "4",
 				SiteDesc: "4",
-				Bg: &sitestore.BgConfig{
+				Bg: &db.BgConfig{
 					Url:      "4",
 					Repeat:   "4",
 					Position: "4",
@@ -243,10 +244,10 @@ func TestLoadCfg(t *testing.T) {
 			WorkerCount: 4,
 		},
 		Site: &sitestore.SiteConfig{
-			ClientCfg: &sitestore.ClientConfig{
+			ClientCfg: &db.ClientConfig{
 				SiteName: "4",
 				SiteDesc: "4",
-				Bg: &sitestore.BgConfig{
+				Bg: &db.BgConfig{
 					Url:      "4",
 					Repeat:   "4",
 					Position: "4",
@@ -309,15 +310,15 @@ func TestLoadCfg(t *testing.T) {
 			WorkerCount: 4,
 		},
 		Site: &sitestore.SiteConfig{
-			ClientCfg: &sitestore.ClientConfig{
-				SiteName: "Quickshare",
-				SiteDesc: "Quickshare",
-				Bg: &sitestore.BgConfig{
-					Url:      "test.png",
-					Repeat:   "no-repeat",
-					Position: "top",
-					Align:    "scroll",
-					BgColor:  "", // the schema of the config from db is old
+			ClientCfg: &db.ClientConfig{
+				SiteName: "4",
+				SiteDesc: "4",
+				Bg: &db.BgConfig{
+					Url:      "4",
+					Repeat:   "4",
+					Position: "4",
+					Align:    "4",
+					BgColor:  "4",
 				},
 			},
 		},
diff --git a/src/server/server.go b/src/server/server.go
index ae6d4c8..b1ab10d 100644
--- a/src/server/server.go
+++ b/src/server/server.go
@@ -23,6 +23,7 @@ import (
 	"golang.org/x/crypto/bcrypt"
 
 	"github.com/ihexxa/quickshare/src/cryptoutil/jwt"
+	"github.com/ihexxa/quickshare/src/db"
 	"github.com/ihexxa/quickshare/src/db/boltstore"
 	"github.com/ihexxa/quickshare/src/db/fileinfostore"
 	"github.com/ihexxa/quickshare/src/db/sitestore"
@@ -162,10 +163,10 @@ func initDeps(cfg gocfg.ICfg) *depidx.Deps {
 	}
 
 	err = siteStore.Init(&sitestore.SiteConfig{
-		ClientCfg: &sitestore.ClientConfig{
+		ClientCfg: &db.ClientConfig{
 			SiteName: cfg.StringOr("Site.ClientCfg.SiteName", "Quickshare"),
 			SiteDesc: cfg.StringOr("Site.ClientCfg.SiteDesc", "quick and simple file sharing"),
-			Bg: &sitestore.BgConfig{
+			Bg: &db.BgConfig{
 				Url:      cfg.StringOr("Site.ClientCfg.Bg.Url", "/static/img/textured_paper.png"),
 				Repeat:   cfg.StringOr("Site.ClientCfg.Bg.Repeat", "repeat"),
 				Position: cfg.StringOr("Site.ClientCfg.Bg.Position", "fixed"),
diff --git a/src/server/server_settings_test.go b/src/server/server_settings_test.go
index 2e96b82..ac0ee24 100644
--- a/src/server/server_settings_test.go
+++ b/src/server/server_settings_test.go
@@ -10,7 +10,7 @@ import (
 	"time"
 
 	"github.com/ihexxa/quickshare/src/client"
-	"github.com/ihexxa/quickshare/src/db/sitestore"
+	"github.com/ihexxa/quickshare/src/db"
 	q "github.com/ihexxa/quickshare/src/handlers"
 	"github.com/ihexxa/quickshare/src/handlers/settings"
 )
@@ -74,11 +74,11 @@ func TestSettingsHandlers(t *testing.T) {
 
 	t.Run("get/set client config", func(t *testing.T) {
 		settingsCl := client.NewSettingsClient(addr)
-		cfgs := []*sitestore.ClientConfig{
-			&sitestore.ClientConfig{
+		cfgs := []*db.ClientConfig{
+			&db.ClientConfig{
 				SiteName: "quickshare",
 				SiteDesc: "quickshare",
-				Bg: &sitestore.BgConfig{
+				Bg: &db.BgConfig{
 					Url:      "url",
 					Repeat:   "repeat",
 					Position: "center",
diff --git a/src/server/server_users_test.go b/src/server/server_users_test.go
index 1f44759..7935261 100644
--- a/src/server/server_users_test.go
+++ b/src/server/server_users_test.go
@@ -9,7 +9,6 @@ import (
 
 	"github.com/ihexxa/quickshare/src/client"
 	"github.com/ihexxa/quickshare/src/db"
-	"github.com/ihexxa/quickshare/src/db/sitestore"
 	"github.com/ihexxa/quickshare/src/db/userstore"
 	q "github.com/ihexxa/quickshare/src/handlers"
 	su "github.com/ihexxa/quickshare/src/handlers/singleuserhdr"
@@ -448,7 +447,7 @@ func TestUsersHandlers(t *testing.T) {
 
 		prefers := []*db.Preferences{
 			&db.Preferences{
-				Bg: &sitestore.BgConfig{
+				Bg: &db.BgConfig{
 					Url:      "/bgurl",
 					Repeat:   "no-repeat",
 					Position: "center",
@@ -461,7 +460,7 @@ func TestUsersHandlers(t *testing.T) {
 				Email:      "email1",
 			},
 			&db.Preferences{
-				Bg: &sitestore.BgConfig{
+				Bg: &db.BgConfig{
 					Url:      "/bgurl2",
 					Repeat:   "no-repeat2",
 					Position: "center2",
diff --git a/src/server/testdata/test_quickshare.db b/src/server/testdata/test_quickshare.db
index a7377bf..7907bde 100644
Binary files a/src/server/testdata/test_quickshare.db and b/src/server/testdata/test_quickshare.db differ