네이버 계정 정합성 맞춤

backend/internal/service/redis_service.go

@@ -102,6 +102,44 @@ func (s *RedisService) Delete(key string) error {
 	return s.Client.Del(ctx, key).Err()
 }
 
+func (s *RedisService) DeleteByPrefix(ctx context.Context, prefix string) (int64, error) {
+	if s == nil || s.Client == nil {
+		return 0, os.ErrInvalid
+	}
+	prefix = strings.TrimSpace(prefix)
+	if prefix == "" {
+		return 0, os.ErrInvalid
+	}
+
+	var deleted int64
+	var cursor uint64
+	pattern := prefix + "*"
+	for {
+		keys, next, err := s.Client.Scan(ctx, cursor, pattern, 250).Result()
+		if err != nil {
+			return deleted, err
+		}
+		for len(keys) > 0 {
+			chunkSize := len(keys)
+			if chunkSize > 500 {
+				chunkSize = 500
+			}
+			chunk := keys[:chunkSize]
+			count, err := s.Client.Del(ctx, chunk...).Result()
+			if err != nil {
+				return deleted, err
+			}
+			deleted += count
+			keys = keys[chunkSize:]
+		}
+		cursor = next
+		if cursor == 0 {
+			break
+		}
+	}
+	return deleted, nil
+}
+
 func (s *RedisService) GetIdentityCacheStatus(ctx context.Context) (domain.IdentityCacheStatus, error) {
 	if s == nil || s.Client == nil {
 		return domain.IdentityCacheStatus{