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Skip blank tiles for template disk cache #175
I needed a method to skip blank tiles in a disk cache template. I have my own webserver methods to return a blank pixel when a file does not exist, so the symlink feature wasn't very helpful to me anyway.
In running a small test with 1280 tiles, my test machine instance finished the run in 43.9 seconds (29.2 tiles/sec) when skipping blank tiles. 222 non-blank tiles were created. Without
I also debated on naming the XML tag
I'd be happy to make any fixes or adjustments you'd like before merging this.