download images in specific order
<p>I am implementing a feature that displays a 360 degree view of a product. The view is represented by a sequence of stand alone images that are downloaded from the server.</p>

<p>From the point of view of the user experience, some images in the sequence are more important than the others. So when my code downloads images I would like to fetch the important ones first and display them immediately, and then fetch less important ones.</p>

<p>I know that I can order my images by their importance and download them sequentially, one after another, but I would like to take advantage of asynchronous downloading to reduce the bandwidth too.</p>

<p>Can anyone recommend anything here?</p>
