[mapserver-users] MapCache: Disabling WMS requests for fully-seeded caches?
John Taranu
jtaranu at firstbasesolutions.com
Tue Nov 29 08:32:35 PST 2011
Hi Thomas,
Thanks for the suggestion. Commenting out the source block disables the WMS requests.
However, the error reporting seems to be broken. Setting <errors>empty_img</errors> crashes Apache with a segmentation fault (mod_mapcache SVN revision 12828). Setting <errors>report</errors> throws HTTP 404 responses, which is a more reasonable result.
John
-----Original Message-----
From: thomas bonfort [mailto:thomas.bonfort at gmail.com]
Sent: Tuesday, November 29, 2011 10:33 AM
To: John Taranu
Cc: mapserver-users at lists.osgeo.org
Subject: Re: [mapserver-users] MapCache: Disabling WMS requests for fully-seeded caches?
You can do this by commenting out the <source> block from the tileset once the wanted tiles have been created. You'll probably also want set error reporting to return blank images from that stage onwards.
--
thomas
On Tue, Nov 29, 2011 at 00:09, John Taranu <jtaranu at firstbasesolutions.com> wrote:
> We have a fully seeded cache that was fully seeded to a polygon outline.
> The intent is to serve the tileset through a variety of services (WMS,
> TMS) using mod-mapcache.
>
>
>
> Tiles that are outside the polygon outline but still within the
> polygon bounding box should be blank tiles. However, a request for
> one of these tiles results in a call to that tileset’s WMS source.
> This creates considerable overhead by starting up MapServer and
> writing the resulting tile to the cache. Is there any way to disable
> the WMS calls for these blank tiles, and instead short-circuit the
> request to return a blank? That is, once a tileset has been fully
> seeded, is it possible to disable any further calls to the WMS, so
> that requests for tiles that are not in the cache return a blank?
>
>
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