2009/3/18 Stefan de Konink <ste...@konink.de> > Jon Burgess wrote: > > On Wed, 2009-03-18 at 00:48 +0100, Stefan de Konink wrote: > >> Dane Springmeyer wrote: > >>> I should stress though that Mod_tile is the optimal solution for tile > >>> rendering for most OSM related purposes. > >> I wonder if an Apache module is able to provide caching. I doubt it can, > >> thus requires more bandwidth right? > > > > Yes it does caching. What make you think it can not? > > I am talking about client side caching. So a client says... hey I have > an expire thingie or i have an e-tag should I refetch it? >
Here are the headers for a request and response for a single tile... GET /16/54640/26982.png HTTP/1.1 Host: b.tile.openstreetmap.org User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.9.0.7) Gecko/2009021910 Firefox/3.0.7 Accept: image/png,image/*;q=0.8,*/*;q=0.5 Accept-Language: en,en-gb;q=0.5 Accept-Encoding: gzip,deflate Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive: 300 Connection: keep-alive Referer: http://www.informationfreeway.org/ HTTP/1.x 200 OK Date: Wed, 18 Mar 2009 02:54:03 GMT Server: Apache/2.2.4 (Ubuntu) Etag: "b3431afd380b6449ac17e631eef4536d" Content-Length: 5338 Cache-Control: max-age=8987 Expires: Wed, 18 Mar 2009 05:23:50 GMT Keep-Alive: timeout=3, max=100 Connection: Keep-Alive Content-Type: image/png So, it returns an Etag header, a cache-control header giving an approx 2.5hr max-age and an Expires header also giving the same 2.5hr age... Looks good to me :) d
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