NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
http://www.unidata.ucar.edu/projects/THREDDS/tech/reference/ThreddsConfigXMLFile.html#Cache_LocationsMy cache directories are essentially empty. Can someone confirm or deny thredds WMS is using or could use ehcache? It would be great if I could use ehcache to cache the data for my tiles (and have them persist) so I can change the image styling on the fly (best of both worlds).
On 05/12/2011 10:36 AM, Guan Wang wrote:
In the original ncWMS package, caching has been considered through Ehcache. http://www.resc.rdg.ac.uk/trac/ncWMS/browser/trunk/src/java/uk/ac/rdg/resc/n cwms/cache/TileCache.java Not sure if this is still kept after the integration with THREDDS. Guan -----Original Message----- From: thredds-bounces@xxxxxxxxxxxxxxxx [mailto:thredds-bounces@xxxxxxxxxxxxxxxx] On Behalf Of Jay Alder Sent: Thursday, May 12, 2011 1:09 PM To: THREDDS Users Subject: [thredds] WMS servers side image cache Hi, I'm playing around with using Thredds WMS using a tiling scheme similar to google maps and I was wondering if there was a way (or something that could be added in the future) to cache WMS maps from the thredds servlet? Since I'm using tiles, the requests are identical. I was thinking thredds would be able to hash (say md5) the request url and write the image to temporary folder. On the second request thredds would look in the cache based on the hash, and return the image if its there otherwise generate a new image. Thredds would likely need to wipe the cache on a restart in case the data changed. Using IDL I wrote some code that downloaded all the tiles at all levels for a particular dataset, but it took about 12 hours to run and generated 400,000+ tiles for only one variable. If thredds cached images it would be a more "on demand" approach rather than trying to pre generate millions of tiles. In the tiled world, caching would say a lot of server side processing (especially for high resolution datasets) and speed up the user experience. -Jay Alder _______________________________________________ thredds mailing list thredds@xxxxxxxxxxxxxxxx For list information or to unsubscribe, visit: http://www.unidata.ucar.edu/mailing_lists/
thredds archives: