Hi all,
I'm new to GeoServer and have been trying to get some caching running with
GeoWebCache, the demos worked out well but I'm a bit lost whether and how I
can get my idea to work in the best way.
What I like to achieve is the following:
1.) Have a basemap with aerial pictures
2.) Have a layer with OSM roads, borders and names (all else transparent)
I Will be requesting the data from OpenLayers and CesiumJS.
---
The (layer acting as) basemap is available at a remote server and for
performance reasons it would be great to cache the data temporarily at the
local client (Windows 8.1 64b). Except from the URL it responds identical
to the well known scheme used by Google Maps (example:
http://mt.google.com/vt/lyrs=s&x=4&y=5&z=4 , only with a different URL
before the first & of course ;-) ). Also same projection.
I Plan to use the osm-hybrid-carto style sheet (
https://github.com/andrewharvey/osm-hybrid-carto/). See for an example
http://tianjara.net/map#12/-33.9844/151.1798 (select an Imagery and the OSM
Hybrid layer).
---
The idea is to load OSM data into a database and let GeoServer serve it out
using two style sheets:
a.) osm-hybrid-carto - when the remote server is available, such the OSM
data provides a transparent overlay of roads/names
b.) normal - when the remote server is not available, such that the OSM
data provides a normal chart/map
Next to that I would like to have the GeoWebCache functionality cache the
following:
a.) temporal aerial tiles from remote server - to limit load on the remote
server and internet connection
b.) transparent OSM roads/borders overlay from local server
c.) full OSM map tiles from local server
OpenLayers and CesiumJS should just be able to load any of the discussed as
layers and switch between them on the fly, but that's the easiest bit...
---
My questions:
1.) Is my idea feasible with a single GeoServer instance
2.) How do I set up GeoWebCache to listen to requests from a client and
fetch the aerial tiles from the TMS server
3.) How do I set up GWC to cache the OSM transparent and 'full' tiles at
the same time, while also delivering the aerial tiles
4.) Whether I'm missing something essential
Hope someone can give me some help into the right direction :-).
Cheers,
Kim
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