Cancel unnecessary tile requests.

[ucyildirim]

Hi all,

I'm working with very large images.
IF I pan / zoom sequentially, too many tile requests are being queued.
Is there a way to cancel unnecessary tiles ? (Like 'the tiles that are not visible')

Best regards.

[iangilman]

You should be able to cancel pending tile requests manually using viewer.imageLoader.clear() if you want (as mentioned in #1327). You can also create your OpenSeadragon viewer with imageLoaderLimit: 1 or something so it doesn't start a lot of simultaneous requests.