[OpenLayers-Users] Mouse wheel zoom generates lots of server requests...

[Richard Greenwood]

I'm seeing this also. It is not apparent just looking in Firebug at
the "Net" requests, but both the Apache and MapServer logs show, for
me, an average of 3 requests for a mouse scroll on an un-tiled layer.
I'm also seeing an undesirable number of requests when the browser is
resized.

I'd love it if someone told me that there was already a parameter to
set a small delay before sending a request in these cases, or some
other solution. But barring that, can anyone suggest where a
reasonable starting point might be for adding such functionality?

Thanks,
Rich
-- 
Richard Greenwood
richard.greenwood at gmail.com
www.greenwoodmap.com


On Thu, Jul 16, 2009 at 3:27 PM, Steve Lime<Steve.Lime at dnr.state.mn.us> wrote:
> Hi all: In testing we've noticed that zooming with a mouse wheel seems to generate lots of requests
> at various resolutions on the way to the final zoom level. So, a wheel up generates server requests
> at intermediate levels, most of which won't be displayed. Someone sitting there rolling their wheel up
> and down can hammer a server.  Short of disabling that control are there good ways to avoid this?
> Perhaps by only asking for data once there's been no activity on the wheel within a certain period.
>
> Steve