update config struct

config.go

@@ -3,18 +3,25 @@ package queue
 // Config ...
 type Config struct {
 	// For message queue
-	Redis struct {
-		URL      string
-		Password string
-	}
+	Redis ConfigRedis
+
 	// Priority to process task, eg: Critical 6, Default 3, Low 1
 	// Using for server only
 	// https://github.com/hibiken/asynq/wiki/Queue-Priority
 	Concurrency int
-	Priority    struct {
+	Priority    ConfigPriority
+}
+
+// ConfigRedis ...
+type ConfigRedis struct {
+	URL      string
+	Password string
+}
+
+// ConfigPriority ...
+type ConfigPriority struct {
 	Critical   int
 	Default    int
 	Low        int
 	StrictMode bool
 }
-}