wms image tiles are cached on server when data has changed
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                 Key: GEOS-4209
                 URL: http://jira.codehaus.org/browse/GEOS-4209
             Project: GeoServer
          Issue Type: Bug
          Components: WMS
    Affects Versions: 2.0.1
         Environment: windows server 2003
            Reporter: Anders
            Assignee: Andrea Aime
            Priority: Minor


Hi!
On the server I have shape files that are replaced and updated.

When accessing WMS with openlayers (tile=true) old images are sent even though 
the shape file is reread by the server.

This can be seen by zooming to a new zoom level and then new content is shown, 
but when zooming out again the old data is shown.

It is not a client caching problem. I have tested on several clients.
I think "Free memory" JAI (free.memory.jai) solves the problem.

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