[QGIS-Developer] Fwd: [gdal-dev] Announcing SOZip: Seek-Optimized profile for the .zip format

[Johannes Kröger (WhereGroup)]

Am 09.01.23 um 16:54 schrieb Richard Duivenvoorde via QGIS-Developer:
>
> Anybody has experience with zipping "laaaarge zipped GeoPackages"? ;-) 
> Is that useful? I just tested a 885MB mbtiles file (I know not 
> geopackage...but still sqlite isnt't it?), and that ended up in 868MB. 

For *raster* GPKGs/MBTiles it won't do much. JPG and PNG tiles are 
already compressed and DEFLATE on top won't do anything interesting 
unless there is lots of identical tiles inside
For *vector* data it should offer considerable savings in most cases.

E. g.:

114M Address_25832_all.gpkg
16M Address_25832_all.gpkg.zip  # standard zip, not sozip

Or see https://github.com/sozip/sozip-examples for actual sozip examples.

Very cool project, Even! (Why not "Cloud-Optimized" though? ;) )

Cheers, Hannes