[OpenLayers-Users] Optimization of raster WMS layers

[jdmorgan]

Hello,

I have a OpenLayer site up and running with a couple of different 
layers.This is great and I am pretty excited about the potential!Now I 
am trying to add a WMS raster layer that is pretty data 
intensive.Unfortunately, it is pretty darn slow to the point of 
dragging.It is particularly noticeable with I zoom in or out of the map.

I was wondering if anyone could point me in the right direction of 
places where I might read-up on how to speed up the loading of these 
raster WMS layers.Based on previous experience with (d)ArcGIS I had to 
do a bit of work with creating cached tiles of my data.  Is that the 
direction I need to be thinking of with OpenLayers/WMS stack?  Or, are 
there some configuration setting that I might be missing.  Here is my 
basic code structure for adding my WMS layer:

     var rasterLayer = new OpenLayers.Layer.WMS(
         'raster_current',
         'http://dev.nemac.org/~derek/fswms/html/ews',
         {layers: 'raster_current', transparent: true},
         {
             isBaseLayer: false,
             transitionEffect: 'resize'
         }
     );

Thanks,

Derek

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