[mapserver-users] TileCache 2.10 - MapServer 5.2

[Rahkonen Jukka]

Hi,
 
I haven't used Tilecache yet, but I have understood that Mapserver does
not need to know anything about Tilecache.  Tilecache program is just a
normal user for Mapserver and the same mapfile that works for normal WMS
usage works also for Tilecache.  Tilecache must be configured to find
Mapserver and the layer that is to be cached.   What happens is that WMS
client that can utilise tiles is sending tiled WMS request to Tilecache
(not directly to Mapserver).  If Tilecache finds a cached image for the
request it is sending it without calling Mapserver at all.  Only if
image is missing from cache Tilecache is passing on the request to
Mapserver.  When the same request comes again Tilecache finds it from
disk and Mapserver can have a rest.  But with non- tiling aware programs
like GIS software tilecache does not help anything, because they are
sending WMS requests which have every time different bbox and output
image size. Tiling WMS clients are sending standardized calls which
support caching, like the following
 
/cgi-bin/tilecache.cgi?LAYERS=Landsat742&SERVICE=WMS&VERSION=1.1.1&REQUE
ST=GetMap&STYLES=&EXCEPTIONS=application%2Fvnd.ogc.se_inimage&FORMAT=ima
ge%2Fjpeg&TRANSPARENT=true&TILED=true&TILESORIGIN=1229757.5465712,813973
4.3664411&SRS=EPSG%3A900913&BBOX=2909757.5465712,8679734.3664411,2929757
.5465712,8699734.3664411&WIDTH=256&HEIGHT=256 HTTP/1.0" 200 22835
 
As I said, I have not user Tilecache myself and I may give misleading
information.
 
There is a MS4W download called Tilecache MapServer (WMS-C tilecache
through MapServer), you can find it from
http://www.maptools.org/ms4w/index.phtml?page=downloads.html 
I have been thinking that it must be worth having a look.
 
-Jukka Rahkonen-
 



	Maria Neywell  wrote:
	

	Hi Jukka, 
	

	
	I don't have generated tiles. 
	
	I simply want to get, for example, a WMS layer that uses
tilecache when I need to display it.

	
	

	Regards,

	Maria
	

	
	



	2009/10/20 Rahkonen Jukka <Jukka.Rahkonen at mmmtike.fi>
	

		Hi,
		
		Could you explain bit more clear what do you want to do?
Do I undestand right that you have tilecache running and you have
generated the tiles?  And now you want to read those tiles with
Mapserver, and push them out from Mapserver non-tiled, for example
through WMS service, through WCS, of through Mapserver cgi?
		
		-Jukka Rahkonen-
		

		Maria Neywell wrote:
		
		
		Johan,
		
		
		
		Thanks for your attention,
		
		
		
		In my MapFile I tried to configure a layer with
TileCache as follows :
		
		
		 LAYER
		   DATA "myShape.shp"
		   CONNECTION "http://localhost/tilecache/tilecache.cgi
		   CONNECTIONTYPE WMS
		....
		END
		
		But it doesn't work.
		
		
		
		Has someone already been successful with a similar
configuration?
		
		
		
		Regards,
		
		
		
		Maria
		
		
		2009/10/19 Johan Ruiter <j.ruiter at geon.nl>
		
		>  Maria,
		>
		>
		>
		> In that case I can't help you out. Hopefully someone
else does.
		>
		>
		>
		> Regards,
		>
		>
		>
		> Johan
		>
		>
		>  ------------------------------
		>
		> *Van:* Maria Neywell [mailto:maria.neywell at gmail.com]
		> *Verzonden:* maandag 19 oktober 2009 14:51
		> *Aan:* Johan Ruiter
		> *CC:* mapserver-users at lists.osgeo.org
		> *Onderwerp:* Re: [mapserver-users] TileCache 2.10 -
MapServer 5.2
		>
		>
		>
		> Thanks for your answer,
		>
		>
		>
		> I did it too with OpenLayers, but I my case,
		>
		> I don't want use OpenLayers.
		>
		>
		>
		> The question is : How to configure MapServer or the
mapfile or both to
		>
		> use tilecache ? and display the layer without using an
OpenLayers layer
		>
		> configured with tilecache ?
		>
		>
		>
		> Regards,
		>
		>
		>
		> Maria
		>
		
		
		


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