diff --git a/backend/cache.go b/backend/cache.go
index 584b988..3b8a793 100644
--- a/backend/cache.go
+++ b/backend/cache.go
@@ -12,7 +12,7 @@ func cache(retry int) {
 	cacheURL = cacheURL[:0]
 
 	results, err := mongo.GetAll()
-	if checkErr(err, "get keys from db") {
+	if checkErr(err, "get documents from db") {
 		if retry == 5 {
 			time.Sleep(500 * time.Millisecond)
 			cache(retry + 1)
diff --git a/database/mongo/connect.go b/database/mongo/connect.go
index a887d47..ef088fa 100644
--- a/database/mongo/connect.go
+++ b/database/mongo/connect.go
@@ -20,7 +20,7 @@ func Connect(retry ...int8) {
 		retry = append(retry, 0)
 	}
 
-	if retry[0] == 2 {
+	if retry[0] == 5 {
 		os.Exit(1)
 	}
 
diff --git a/database/mongo/getAll.go b/database/mongo/getAll.go
index 1c99be1..9c7e384 100644
--- a/database/mongo/getAll.go
+++ b/database/mongo/getAll.go
@@ -13,8 +13,8 @@ func GetAll() ([]URL, error) {
 	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
 	defer cancel()
 
-	cursor, err := Coll.Find(ctx, json{
-		"cluster": config.Toml.Cluster.ID,
+	cursor, err := Coll.Find(ctx, URL{
+		Cluster: config.Toml.Cluster.ID,
 	})
 	if err != nil {
 		return nil, err
diff --git a/database/mongo/types.go b/database/mongo/types.go
index 7e6bac9..60a672e 100644
--- a/database/mongo/types.go
+++ b/database/mongo/types.go
@@ -1,8 +1,6 @@
 package mongo
 
 type URL struct {
-	URL     string `bson:"_id"`
-	Cluster int    `bson:"cluster"`
+	URL     string `bson:"_id,omitempty" json:"url,omitempty"`
+	Cluster int    `bson:"cluster,omitempty" json:"cluster,omitempty"`
 }
-
-type json map[string]interface{}
diff --git a/website/server.go b/website/server.go
index a739c72..f7763d9 100644
--- a/website/server.go
+++ b/website/server.go
@@ -28,7 +28,7 @@ func Server() {
 	api.ApplyRoutes(router)
 
 	err := router.Run(":" + strconv.Itoa(config.Toml.HTTP.Port))
-	if common.CheckErr(err, "gin start") {
+	if common.CheckErr(err, "gin server run") {
 		os.Exit(1)
 	}
 }