[mapguide-users] SDF Compression
Kenneth, GEOGRAF A/S
ks at geograf.dk
Sun Dec 2 17:15:05 EST 2007
The SDF format is a tweaked version of the SQLite engine.
I don't think there's much to do about the size of it.
I have seen pretty heavy performance optimizations, if I remove all
unused columns from the data source.
Other than that, you might consider building different versions of the
SDF data for different zoom levels.
You can usually generalize the geometry, and thus get much faster
Regards, Kenneth, GEOGRAF A/S
> Has anybody worked on minimizing the response times of the server? I am
> working primarily with SDFs and there is a considerable amount of data in
> them for a large city. Is there any way to compress the source SDF? Or has
> anybody any other pointers to compress the data that is actually
> I have looked into the PNG vs JPG issue, but the quality drop is very
> significant for client requirements.
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