I'm trying to find a method to cache one layer that its data is updated every 2 hours in the DB. From what I've found the best option is using Response Cache Headers timeout http://docs.geoserver.org/stable/en/user/webadmin/data/layers.html
What I've done is:
- enable direct integration with GeoServer WMS.
- add tiled=true parameter to WMS request
- check "Response Cache Headers" with 7200 time specified as in http://docs.geoserver.org/stable/en/user/webadmin/data/layers.html
and when i look at the headers I see:
Cache-Control:max-age=7200, must-revalidate Content-Disposition:inline; filename=geoserver-dispatch.image Content-Type:image/png Date:Sun, 04 May 2014 18:38:16 GMT Expires:Sun, 04 May 2014 20:36:36 GMT geowebcache-cache-result:HIT geowebcache-crs:EPSG:900913 geowebcache-gridset:EPSG:900913 geowebcache-tile-bounds:12523442.712499999,2504688.5425000004,15028131.254999999,5009377.085000001 geowebcache-tile-index:[13, 9, 4] geowebcache-tile-index:[13, 9, 4] Last-Modified:Sun, 04 May 2014 07:06:05 GMT Server:Apache-Coyote/1.1 Transfer-Encoding:chunked
I thought it worked but after 2 hours the layer didn't get updated! it's like that the layer is cached and frozen like forever. I think I'm missing something. any idea?