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un_pogaz · 04-14-2018, 11:16 AM

I know that the metadata.calibre file is used to index the books on our device, and thus to reduce the analysis time of the presents epubs files.
But this has a default, it takes up space, and mine is 31 MB (was huge on a device, compared to 500 KB average of an epub).
Always in search of a gain of disk space, and out of curiosity, I archived my metadata.calibre in a ZIP.

And I went from 31 Mo to 3.5 Mo
...
What

?
I was expecting a result, but not so effective

8 I divided by 8, and it's a so simple idea, that I wonder (almost) how nobody thought about it and that it's not the default working of Calibre?!
(or make it an option)

Okay, I can guess that it will slow down the reading of metadata.calibre slightly, because it will first have to unzipped it to a temporary folder, and when updating data, it will have to remplace the metadata.calibre.zip on the device, but it should be "negligible".
(Or else, read and edit the metadata.calibre directly in the ZIP file, I do not know that is possible.)

So here's my idea: Archived metadata.calibre file in a ZIP.

04-14-2018, 11:16 AM	#1
un_pogaz Chalut o/ Posts: 443 Karma: 672378 Join Date: Dec 2017 Device: Kobo	Zipped metadata.calibre for reduce size I know that the metadata.calibre file is used to index the books on our device, and thus to reduce the analysis time of the presents epubs files. But this has a default, it takes up space, and mine is 31 MB (was huge on a device, compared to 500 KB average of an epub). Always in search of a gain of disk space, and out of curiosity, I archived my metadata.calibre in a ZIP. And I went from 31 Mo to 3.5 Mo ... What ? I was expecting a result, but not so effective 8 I divided by 8, and it's a so simple idea, that I wonder (almost) how nobody thought about it and that it's not the default working of Calibre?! (or make it an option) Okay, I can guess that it will slow down the reading of metadata.calibre slightly, because it will first have to unzipped it to a temporary folder, and when updating data, it will have to remplace the metadata.calibre.zip on the device, but it should be "negligible". (Or else, read and edit the metadata.calibre directly in the ZIP file, I do not know that is possible.) So here's my idea: Archived metadata.calibre file in a ZIP.