On Fri, Nov 4, 2011 at 1:13 AM, robpd <[email protected]> wrote: > Hi > > We have a large and ever-expanding set of points to show on a web-map. The > number of points grows by the day and some points change location by the > day. Each point has some associated textual metadata to show on a > point-and-click basis on the map. > > So, as indicated in other posts, I want a WMS service (using SLDs) for the > rendering and a WFS service for the point interrogation. However, here are > the wrinkles.. > > (a) How can we ensure that only the tiles that need to change in response to > new/changed points do so? At the moment there are two ways of doing that. 1) if the changes are performed through WFS (which I doubt), you don't need to do anything. There's a WFS transaction listener that truncates the tiles for the region affected by the transaction. 2) Set up a GeoRSS poll task on the layer <http://geowebcache.org/docs/current/configuration/layers/georss.html?highlight=georss> This implies that you'll need to develop the Atom/GeoRSS feed that's to be polled by GWC in order to get the latest changes. The structure needs to be like the one in this example: <https://github.com/GeoWebCache/geowebcache/blob/master/geowebcache/georss/src/test/resources/org/geowebcache/georss/test-data/mixedgeometries_feed.xml>. The bad news is that it is not yet possible to configure a georss feed for GeoServer embedded layers, so you'll need to create separate layer definitions in <gs data dir>/gwc/geowebcache.xml
> > (b) We have our own (high speed) point clustering solution to provide > point-clusters at most zoom levels - as we want to display just cluster > centres at most zoom-levels (apart from the most 'zoomed-in'). Is there a > better point-clustering alternative available in GeoServer? Could I use my > own clusters for the different zoom levels? I'm curious what is a point cluster? > > (c) From time to time we may wish to completely recluster all points (like > b) - thus leading to the need to replenish all tiles. > > Right now it's a green-fields situation so I'm looking for any architectural > suggestions that use Geoserver and Geowebcache. Any suggestions as to the > main building blocks I should be using (including storage etc)? Check both GeoSever and GWC production recommendations: <http://geowebcache.org/docs/current/production/index.html> <http://docs.geoserver.org/stable/en/user/production/index.html> And this publication contains a couple descriptions of real world production scenarios: <http://opengeo.org/publications/geoserver-production/> Hope that helps, Gabriel > > Would be grateful of some direction. Thanks. > > > -- > View this message in context: > http://osgeo-org.1803224.n2.nabble.com/Large-Volatile-Point-Dataset-WMS-and-WFS-tp6961594p6961594.html > Sent from the GeoServer - User mailing list archive at Nabble.com. > > ------------------------------------------------------------------------------ > RSA(R) Conference 2012 > Save $700 by Nov 18 > Register now > http://p.sf.net/sfu/rsa-sfdev2dev1 > _______________________________________________ > Geoserver-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/geoserver-users > -- Gabriel Roldan OpenGeo - http://opengeo.org Expert service straight from the developers. ------------------------------------------------------------------------------ RSA(R) Conference 2012 Save $700 by Nov 18 Register now http://p.sf.net/sfu/rsa-sfdev2dev1 _______________________________________________ Geoserver-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geoserver-users
