I have a blob structure which is primarily doubles. Is there anyone with some experience with doing data compression to make the blobs smaller? Tests I have run so far indicate that compression is too slow on blobs of a few meg to be practical. I get now at least 20 to 40 inserts per second but if a single compression takes over a second, it's clearly not worth the trouble. Does anybody have experience with a compression scheme with blobs that consist of mostly arrays of doubles? Some schemes ( ibsen) offer lightening speed decompression so if the database was primarily used to read, this would be good choice but very expensive to do the compression required to make it.
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