diff --git a/authcollection.go b/authcollection.go
index 7108972..fb78dd7 100644
--- a/authcollection.go
+++ b/authcollection.go
@@ -97,45 +97,7 @@ func (ac *redisAuthCell) ToBytes() []byte {
 }
 
 func newAuthCollectionWithRedis(redisClient *redis.Client, subctx context.Context, maingateURL string, apiToken string) *AuthCollection {
-	req, _ := http.NewRequest("GET", fmt.Sprintf("%s/config", maingateURL), nil)
-	req.Header.Add("MG-X-API-TOKEN", apiToken)
-
 	sessionTTL := int64(3600)
-	client := http.Client{
-		Timeout: 3 * time.Second,
-	}
-	resp, err := client.Do(req)
-	if resp != nil {
-		defer resp.Body.Close()
-	}
-
-	if err != nil {
-		if !*devflag {
-			logger.Error("get maingate config failed :", err)
-			return nil
-		}
-	} else if resp.StatusCode == http.StatusOK {
-		raw, _ := io.ReadAll(resp.Body)
-		if len(raw) == 0 {
-			logger.Error("get maingate config failed :", err)
-			return nil
-		}
-
-		var config map[string]any
-		err = json.Unmarshal(raw, &config)
-		if err != nil {
-			logger.Error("get maingate config failed :", err)
-			return nil
-		}
-
-		if ttl, ok := config["maingate_session_ttl"].(float64); ok {
-			sessionTTL = int64(ttl)
-		}
-	} else if !*devflag {
-		logger.Error("get maingate config failed :", err)
-		return nil
-	}
-
 	ac := MakeAuthCollection(time.Duration(sessionTTL * int64(time.Second)))
 	pubsub := redisClient.Subscribe(subctx, sessionSyncChannelName)
 	ctx, cancel := context.WithCancel(context.TODO())