在iPhone应用程序中，在web上存储图像和数据最有效的方法是什么?

I'll try to keep this as short as possible.. I am making an app for iPhone that needs to be able to store some images from the web. The URL for the images(among other data) are stored in one table at a MySQL-server. From there, I have parsed the table with JSON, and successfully serialized this to show in a UITableView in the app. Each cell now shows the image from the imageurl-field in the table, and the title of the image as text, from the title-field in the table, both from MySQL->json.php->NSArray(json)(objectAtIndex) etc.I'll try to keep this as short as possible.. I