text: const GridFsStorage = require('multer-gridfs-storage');
  
  // Both configurations are equivalent
  
  const storage1 = new GridFsStorage({
      url: 'mongodb://host1:27017,host2:27017/database',
      cache: 'connections'
  });
  
  const storage2 = new GridFsStorage({
      url: 'mongodb://host2:27017,host1:27017/database',
      cache: 'connections'
  });
  