Category: GeoWebCache

GeoServer, GeoWebCache

GeoServer and efficient delivery of raster data (image pyramid layer) (update)

A perennial favorite on this blog is “GeoServer and efficient delivery of raster data (image pyramid layer)“. I am neither the last nor the first authority on this topic (check the GeoSolutions blog for authoritative work on GeoServer and raster, also look to the GeoServer documentation), but I’ve had some good experiences with serving rasters in GeoServer, especially using image pyramid layers Read the original, … Continue reading GeoServer and efficient delivery of raster data (image pyramid layer) (update)

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GeoWebCache

Copying GWC Directory efficiently– Linux

There has been discussion recently amongst some of the web cache builders of switching from file-based tile caching to SQLite or other database driven systems.  I haven’t kept close tabs– perhaps this is already implemented for some.  For GeoWebCache, we’re working with files (lots of them), so copying efficiently if we need to move our cache is important.  The tar command helps here, e.g. (run … Continue reading Copying GWC Directory efficiently– Linux

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GeoServer, GeoWebCache

WMS vs. WMTS and GetFeatureInfo Requests

How to get GetFeatureInfo requests to perform against GeoWebCache?  Just don’t.  I’m unclear as to whether it is problematic to do this because of a known bug or known implementation differences between the (unofficial) WMTS standard as implemented by OpenLayers and GeoServer, but in Googling for answers to how to perform a GetFeatureInfo request against GeoWebCache, I discovered a workaround (logged here for example).  The … Continue reading WMS vs. WMTS and GetFeatureInfo Requests

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GeoServer, GeoWebCache

GeoWebCache Configuration

I’ve long delayed the configuration of GeoWebCache (GWC).  Automatic configuration within GeoServer’s deployment of it has been adequate until now.   Until now that I want to deploy tiles in something other than Google Mercator… . I’ve developed a cache setup for Ohio State Plane North, Feet (epsg:3734).  At first it was a going to be a cache just for our service area, then I thought … Continue reading GeoWebCache Configuration

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GeoServer, GeoWebCache

GeoServer and efficient delivery of raster data (image pyramid layer)

One thing I’ve learned in the last few years is that there is no theoretical reason why (properly indexed and summarized) data cannot be displayed at all scales as quickly as at any scale. This is the principle at work behind the extraordinary efficiencies of delivering data and imagery through a slippy map interface like Google, Bing, and OpenLayers as well as efficient thick client … Continue reading GeoServer and efficient delivery of raster data (image pyramid layer)

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