Tiling - Revision history

Wiki-Sholl: Added GFI

2010-09-13T06:19:26Z

Added GFI

Wiki-Stvn: Added some ideas from the BoF

2010-09-10T14:52:26Z

Added some ideas from the BoF

Wiki-Stvn at 12:28, 9 September 2010

2010-09-09T12:28:16Z

Wiki-Stvn: Created page with 'This page belongs to the [http://lists.osgeo.org/mailman/listinfo/tiling | tiling mailinglist] and is initiated after the Foss4g 2010 BoF on tiling. At the BoF it became clear th…'

2010-09-09T12:17:40Z

Created page with 'This page belongs to the [http://lists.osgeo.org/mailman/listinfo/tiling | tiling mailinglist] and is initiated after the Foss4g 2010 BoF on tiling. At the BoF it became clear th…'

New page

This page belongs to the [http://lists.osgeo.org/mailman/listinfo/tiling | tiling mailinglist] and is initiated after the Foss4g 2010 BoF on tiling. At the BoF it became clear that there is a need for more advanced cache management in the various tile-cache programs.

== Problems ==
* Tiling produces too many files
* There is need for usage-statistics on tiles
* A smarter way for seeding is needed
* A smarter way for deleting tiles is needed

← Older revision		Revision as of 14:52, 10 September 2010
Line 6:		Line 6:
	* A smarter way for seeding is needed		* A smarter way for seeding is needed
	* A smarter way for deleting tiles is needed		* A smarter way for deleting tiles is needed
		+
		+	== Possible solutions ==
		+	GeoWebCache uses a paging algorithm to manage the statistics of the tiles. Tiles are grouped in page-files and the deeper the zoomlevel the more files are in the page file. Usage statistics are handled at the page-file level, not per tile.
		+
		+	OSM uses special PNG files where 8x8 tiles are grouped with a special header to locate the individual tiles. This way the number of files are reduced. It is not clear of 8x8 is optimal.
		+
		+	Empty/single color tiles should be recognised and linked to one file. Mapproxy uses a color lookup algorithm to check if there is only one color per tile.
		+
		+	Use polygons as input for tileseeding.
		+
		+	To optimise I/O on the mapserver, use depth traversing tileseeding.

@@ Line 6: / Line 6: @@
 * A smarter way for seeding is needed
 * A smarter way for deleting tiles is needed
 == Possible solutions ==

@@ Line 1: / Line 1: @@
-This page belongs to the [http://lists.osgeo.org/mailman/listinfo/tiling | tiling mailinglist] and is initiated after the Foss4g 2010 BoF on tiling. At the BoF it became clear that there is a need for more advanced cache management in the various tile-cache programs.
+This page belongs to the [http://lists.osgeo.org/mailman/listinfo/tiling tiling mailinglist] which has been initiated after the Foss4g 2010 BoF on tiling. At the BoF it became clear that there is a need for more advanced cache management in the various tile-cache programs.
 == Problems ==
-* Tiling produces too many files
+* Tiling produces too many files to handle
 * There is need for usage-statistics on tiles
 * A smarter way for seeding is needed
 * A smarter way for deleting tiles is needed