Enhance Redis and NATS connection logic with retry mechanisms, exponential backoff, and improved error handling.

pkg/server/leaderboard.go

@@ -24,13 +24,37 @@ const leaderboardKey = "leaderboard:top"
 
 func InitLeaderboard(redisAddr string) error {
 	rdb := redis.NewClient(&redis.Options{
-		Addr: redisAddr,
-		DB:   0,
+		Addr:            redisAddr,
+		DB:              0,
+		MaxRetries:      5,
+		MinRetryBackoff: 1 * time.Second,
+		MaxRetryBackoff: 5 * time.Second,
+		DialTimeout:     10 * time.Second,
+		ReadTimeout:     3 * time.Second,
+		WriteTimeout:    3 * time.Second,
 	})
 
 	ctx := context.Background()
-	if err := rdb.Ping(ctx).Err(); err != nil {
-		return err
+
+	// Retry-Logik für initiales Connect
+	maxRetries := 10
+	retryDelay := 2 * time.Second
+
+	for i := 0; i < maxRetries; i++ {
+		if err := rdb.Ping(ctx).Err(); err != nil {
+			log.Printf("⚠️ Redis noch nicht erreichbar (Versuch %d/%d): %v", i+1, maxRetries, err)
+			if i < maxRetries-1 {
+				log.Printf("⏳ Warte %v vor erneutem Versuch...", retryDelay)
+				time.Sleep(retryDelay)
+				retryDelay = retryDelay * 2 // Exponential backoff
+				if retryDelay > 30*time.Second {
+					retryDelay = 30 * time.Second
+				}
+				continue
+			}
+			return fmt.Errorf("Redis nicht erreichbar nach %d Versuchen: %w", maxRetries, err)
+		}
+		break // Erfolgreich verbunden
 	}
 
 	GlobalLeaderboard = &Leaderboard{
@@ -38,7 +62,7 @@ func InitLeaderboard(redisAddr string) error {
 		ctx: ctx,
 	}
 
-	log.Println("📊 Redis-Leaderboard verbunden")
+	log.Println("✅ Redis-Leaderboard verbunden")
 	return nil
 }