feat: enhance redis and production IA

backend/internal/handler/connection_tester.go

@@ -141,12 +141,13 @@ func testRedis(ctx context.Context, host string, port int, username, pass string
 		redisUsername = ""
 	}
 	rdb := redis.NewClient(&redis.Options{
-		Addr:        addr,
-		Username:    redisUsername,
-		Password:    pass,
-		DB:          0,
-		DialTimeout: 10 * time.Second,
-		ReadTimeout: 10 * time.Second,
+		Addr:         addr,
+		Username:     redisUsername,
+		Password:     pass,
+		DB:           0,
+		DialTimeout:  10 * time.Second,
+		ReadTimeout:  10 * time.Second,
+		WriteTimeout: 10 * time.Second,
 	})
 	defer rdb.Close()
 
@@ -169,6 +170,14 @@ func testRedis(ctx context.Context, host string, port int, username, pass string
 			}
 		}
 	}
+	if clusterInfo, err := rdb.Do(ctx, "CLUSTER", "INFO").Text(); err == nil {
+		for _, line := range strings.Split(clusterInfo, "\n") {
+			line = strings.TrimRight(line, "\r")
+			if strings.HasPrefix(line, "cluster_state:") {
+				isCluster = strings.TrimSpace(strings.TrimPrefix(line, "cluster_state:")) == "ok"
+			}
+		}
+	}
 
 	mode := "standalone"
 	if isCluster {