diff --git a/main.go b/main.go
index 284427b..dcd2a7f 100644
--- a/main.go
+++ b/main.go
@@ -11,7 +11,6 @@ import (
 
 	"github.com/paypal/gatt"
 	"github.com/paypal/gatt/examples/option"
-	"gorm.io/gorm"
 	"myschools.me/suguo/ble-ibeacon/model"
 	"myschools.me/suguo/ble-ibeacon/sqlite"
 )
@@ -33,8 +32,6 @@ func NewiBeacon(data []byte) (*IBeancon, error) {
 	return beacon, nil
 }
 
-var db *gorm.DB
-
 func onPerhipheralDiscovered(p gatt.Peripheral, a *gatt.Advertisement, rssi int) {
 	// if p.ID() != "78:2C:29:16:F2:78" {
 	// 	return
@@ -46,12 +43,17 @@ func onPerhipheralDiscovered(p gatt.Peripheral, a *gatt.Advertisement, rssi int)
 	// 	return
 	// }
 	fmt.Println("NAME:", a.LocalName, "T:", time.Now(), "MAC:", p.ID(), "RSSI:", rssi, "LEN:", len(a.ManufacturerData))
-	if db == nil {
-		var err error
-		db, err = sqlite.New()
-		if err != nil {
-			log.Fatalln(err.Error())
-		}
+
+	sqlite.Init(&sqlite.Config{
+		DBFile: fmt.Sprintf("./ble%s.db", p.ID()),
+	})
+
+	if err := sqlite.Migrate(&model.Rssi{}); err != nil {
+		log.Fatalln(err.Error())
+	}
+	db, err := sqlite.New()
+	if err != nil {
+		log.Fatalln(err.Error())
 	}
 	if err := db.Save(&model.Rssi{
 		MAC:        p.ID(),