GeoServer – S3 Support for GeoTIFF vs COG (Cloud Optimized GeoTIFF) Support

amazon s3amazon-web-servicescloud-optimized-geotiffgeoservergeotiff-tiff

I have large raster datasets on AWS S3 (~100gb each) that I would like to serve as WMS through Geoserver.

Has the "S3 Support for GeoTiff" extension been replaced by the "COG" one?

I understand that I would need to process the tiff to be a COG using gdal or rio-cogeo.

Best Answer

No, both extensions continue to exist. COG is probably faster (and cheaper) that the general S3 but may require you to reprocess your tiffs to make them COGs.

Just to note that as they are community extensions they aren't really supported in the sense that other extensions are. But users that depend on them could step up to provide support or cash to buy support.

Related Solutions

OpenLayers – Working with GeoTIFF COG Mosaic and Custom Projections

Not the ideal VRT solution, but the workaround to load multiple urls.:

// URL to COG tile
const urls = [
  'https://tile-service-raster.s3.us-east-1.amazonaws.com/cogs/as-raster-tile/HM_COG.tif',
  'https://tile-service-raster.s3.us-east-1.amazonaws.com/cogs/as-raster-tile/HN_COG.tif'
]

function getSourceURLs(urls) {
  var urlArray = [];
  urls.forEach(address => urlArray.push(
    new GeoTIFF({
        sources: [
          {
            url:address,
            tileSize: 256,
          },
        ],
        convertToRGB: true,
        interpolate: false,
      }), 
    ))
    return urlArray
}

const cog = new TileLayer({
  crossOrigin: 'anonymous',
  sources: getSourceURLs(urls)
})

Geoserver – Addressing Slow Initial Loading of Layers from Huge COGs in AWS S3

This parameter:

it.geosolutions.cog.default.header.length

is in bytes. I had set it in Kbytes (256). As a result, I had mistakenly decreased the length, so the Geoserver had to do more iterations to read the full header. Now that I have set it to 262144 (bytes), the initial load is completed in couple of seconds.

Best Answer

Related Solutions

OpenLayers – Working with GeoTIFF COG Mosaic and Custom Projections

Geoserver – Addressing Slow Initial Loading of Layers from Huge COGs in AWS S3

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