diff --git a/internal/app/app.go b/internal/app/app.go
index ed0a34c..627ef8d 100644
--- a/internal/app/app.go
+++ b/internal/app/app.go
@@ -118,7 +118,7 @@ func (a *App) Start() error {
 			}
 			logrus.Info("System settings initialized in DB.")
 
-			a.settingsManager.Initialize(a.storage, a.groupManager)
+			a.settingsManager.Initialize(a.storage, a.groupManager, a.leaderService)
 
 			// 从数据库加载密钥到 Redis
 			if err := a.keyPoolProvider.LoadKeysFromDB(); err != nil {
@@ -131,7 +131,7 @@ func (a *App) Start() error {
 		if err := a.leaderService.WaitForInitializationToComplete(); err != nil {
 			return fmt.Errorf("follower failed to start: %w", err)
 		}
-		a.settingsManager.Initialize(a.storage, a.groupManager)
+		a.settingsManager.Initialize(a.storage, a.groupManager, a.leaderService)
 	}
 
 	a.groupManager.Initialize()
diff --git a/internal/config/system_settings.go b/internal/config/system_settings.go
index dffad5e..62e5209 100644
--- a/internal/config/system_settings.go
+++ b/internal/config/system_settings.go
@@ -101,8 +101,12 @@ type gm interface {
 	Invalidate() error
 }
 
+type leader interface {
+	IsLeader() bool
+}
+
 // Initialize initializes the SystemSettingsManager with database and store dependencies.
-func (sm *SystemSettingsManager) Initialize(store store.Store, gm gm) error {
+func (sm *SystemSettingsManager) Initialize(store store.Store, gm gm, leader leader) error {
 	settingsLoader := func() (types.SystemSettings, error) {
 		var dbSettings []models.SystemSetting
 		if err := db.DB.Find(&dbSettings).Error; err != nil {
@@ -144,6 +148,9 @@ func (sm *SystemSettingsManager) Initialize(store store.Store, gm gm) error {
 	}
 
 	afterLoader := func(newData types.SystemSettings) {
+		if !leader.IsLeader() {
+			return
+		}
 		if err := gm.Invalidate(); err != nil {
 			logrus.Debugf("Failed to invalidate group manager cache after settings update: %v", err)
 		}
diff --git a/internal/services/group_manager.go b/internal/services/group_manager.go
index cf0de8d..a3d9ea3 100644
--- a/internal/services/group_manager.go
+++ b/internal/services/group_manager.go
@@ -47,11 +47,6 @@ func (gm *GroupManager) Initialize() error {
 			g := *group
 			g.EffectiveConfig = gm.settingsManager.GetEffectiveConfig(g.Config)
 			groupMap[g.Name] = &g
-			logrus.WithFields(logrus.Fields{
-				"group_name":       g.Name,
-				"group_config":     g.Config,
-				"effective_config": g.EffectiveConfig,
-			}).Debug("Loaded group with effective config")
 		}
 		return groupMap, nil
 	}