[mapguide-internals] Tile caching

[Zac Spitzer]

Geowebcache looks like an interesting option in this area

http://google-opensource.blogspot.com/2008/05/accelerate-your-maps-with-geowebcache.html

the actual project website has been down for a while tho

but in order for this to be useful, Mapguide would need to expose
mapDefinitions via WMS, not just layers

z

On Fri, Feb 29, 2008 at 11:08 AM, Zac Spitzer <zac.spitzer at gmail.com> wrote:
> On Fri, Feb 29, 2008 at 11:36 AM, Traian Stanev
> <traian.stanev at autodesk.com> wrote:
>>
>>  I don't know much about tilecache and WMS-C -- is that the same format as the NASA tiled WMS?
>>
>>  http://onearth.jpl.nasa.gov/tiled.html
>
> Pretty much i think but you can teach tilecache about different backends,
>
> the existing tilecache providers live here
> http://svn.tilecache.org/trunk/tilecache/TileCache/Layers/
>
> refactoring Mike Adair's openlayers mapguide support into python and
> adding auto configuration
> of the tile grid using getresourcecontent would be quite straight forward
>
>
>>
>>
>>  Traian
>>
>>  ________________________________________
>>  From: mapguide-internals-bounces at lists.osgeo.org [mapguide-internals-bounces at lists.osgeo.org] On Behalf Of Zac Spitzer [zac.spitzer at gmail.com]
>>  Sent: Thursday, February 28, 2008 7:32 PM
>>  To: MapGuide Internals Mail List
>>  Subject: Re: [mapguide-internals] Tile caching
>>
>>
>>
>>  On Fri, Feb 29, 2008 at 4:48 AM, Jason Birch <Jason.Birch at nanaimo.ca> wrote:
>>  > Hi...
>>  >
>>  >  I was just looking at Zac's recent ticket about adding cache headers to
>>  >  GETTILEIMAGE requests.
>>  >
>>  >  https://trac.osgeo.org/mapguide/ticket/467
>>  >
>>  >  I don't think that this is the best way of presenting our tile caches.
>>  >  Personally, I'd prefer to see a direct HTTP interface to the cache,
>>  >  where the user requests a file from the webserver as a resource.  That
>>  >  way all of the HTTP-goodness (cacheing, etc) is built-in.
>>
>>  Tilecache http://tilecache.org/ :)
>>
>>  Writing a mapguide rendering backend plugin for tilecache would
>>  probably be the easiest effort wise. It
>>  would require adding python into the mix, but it's a code base that is
>>  already written and working
>>  in production.
>>
>>  I think going if any changes in this area should adopt existing
>>  standards or adopt existing patterns
>>  where possible (GETTILEIMAGE and WMS feel a bit like indentical twins
>>  separated at birth).
>>
>>  >
>>  >  I don't think that this would be all that hard to do.  There would have
>>  >  to be a 404 handler that either generates and sends back images that
>>  >  don't exist or, if it is unable to generate the image send the
>>  >  appropriate 400- or 500-level codes.  The only problem that I can see
>>  >  with this is security.  There would have to be some way for either
>>  >  MapGuide to use OS or LDAP security (and the web server to use the same)
>>  >  or for the web server to use the MapGuide user store for authentication.
>>  >
>>  >  There was some discussion about MapGuide security earlier (at FOSS4G?)
>>  >  and I certainly wouldn't be sad to see MapGuide's proprietary security
>>  >  model replaced with something that tied into OS-level security.
>>
>>
>>  >
>>  >  Thoughts?
>>  >
>>  >  Jason
>>  >  _______________________________________________
>>  >  mapguide-internals mailing list
>>  >  mapguide-internals at lists.osgeo.org
>>  >  http://lists.osgeo.org/mailman/listinfo/mapguide-internals
>>  >
>>
>>
>>
>>  --
>>  Zac Spitzer -
>>  http://zacster.blogspot.com (My Blog)
>>  +61 405 847 168
>>  _______________________________________________
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>>  mapguide-internals at lists.osgeo.org
>>  http://lists.osgeo.org/mailman/listinfo/mapguide-internals
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>>
>
>
>
> --
> Zac Spitzer -
> http://zacster.blogspot.com (My Blog)
> +61 405 847 168
>



-- 
Zac Spitzer -
http://zacster.blogspot.com (My Blog)
+61 405 847 168