[mapserver-users] mapcache: restricted extent and ruleset to limit cache area seems ineffective

[Travis Kirstine]

You can set the

<errors>empty_img</errors>

To return a blank tile.  I believe the status is still 404 - I don't
think you can control this


On Fri, 30 Aug 2019 at 15:44, Mark Volz <MarkVolz at co.lyon.mn.us> wrote:

> Hello,
>
>
>
> I am in the process of limiting the cached area in mapcache.  I am having
> trouble with both the restricted_extent and ruleset parameters.  I first
> started by using restricted_extent such as “<grid restricted_extent="435567
> 98889 568247 259687">LyonCC</grid>”.  That parameter seemed to work.
> However mapcache returned 404 errors for any tiles outside of the
> restricted extent.  Next I tried to use rulesets instead.  The rulesets
> seem to have no effect, and new tiles were getting generated outside of the
> visibility extent.
>
>
>
> Question 1:  When we use restricted extents on a grid should MapCache
> return a transparent tile, white tile, or a 404 error?  Can we control what
> it returns?
>
>
>
> Question 2:  Do I have my ruleset configured appropriately?
>
>
>
> <tileset name="LyonBaseMap">
>
> <grid ruleset="CountyBuffer">LyonCC</grid>
>
> </tileset>
>
>
>
> <ruleset name="CountyBuffer">
>
> <rule zoom_level="1 2 3 4 5 6 7 8 9 10 11"><!—Do I need to include zoom
> levels?-->
>
> <visibility>
>
> <extent>435567 98889 568247 259687</extent>
>
> </visibility>
>
> </rule>
>
> </ruleset>
>
>
>
> Thank You!
>
>
>
> Sincerely,
>
> *Mark Volz, GISP*
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> mapserver-users at lists.osgeo.org
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