Yes !

I have already implemented the search functionality described in the official OPDS spec:

http://opds-spec.org/specs/opds-catalog-1-1-20110627/#Search

Ok, that's not good.

The next version (no ETA) will contains big changes and some fixes related to memory consumption.

I can't promise it will fix your problem but that's the best I can offer for now.

To be honest I have no idea how Ubooquity performs with hundreds of thousands of files (apparently not that well), you're in uncharted territories.

7GB is an insane amount for something as small as Ubooquity.

But I still don't know if there is a memory leak or if the problem is limited to PDF handling.

Do you have PDF files ?

The script mentioned in the FAQ is for Linux, so it won't help you.

To set the quantity of memory Java can use, you have to launch Ubooquity using the command line.

Open a DOS shell and go in the directory which contains your Ubooquity.jar file.

Then type something like that:

"C:\Program Files\Java\jdk1.8.0_92\bin\javaw.exe" -Xmx1500m -jar Ubooquity.jar

To choose the memory amount, replace 1500m with the value you want (1500m means 1500 megabytes).

To easily reuse the command line, you can paste it in a text file and rename the text file to something.bat

Thanks for the sample file, I'll download it when I get home.

As for the solution, I am entirely dependent on the PDFBox library (used to extract PDF covers and pages).

So apart from updating Ubooquity with the latest PDFBox version each time I realease a new version, there's not much I can do.

As far as I know, Ubooquity has no timeout when it tries to access a file.

Either it fails right away, or it waits for the file to be available. On my own setup the disk takes sometimes 5 to 10 seconds to wake up and the browser just waits until the page is displayed.

You're welcome. :)

In the default and modern themes, a rating of 0 (which is the default value) results in the display of a transparent image (so you don't see anything, although some space is taken by the image).

Is this that empty space that you want to hide ?

As for the "null" description, did you scan some books of your collection along time ago ? (I mean at least 6 months ago)

I'm asking because there was a bug in an earlier version of Ubooquity causing this behavior.

Just updating is not enough though, you'll have to clear your ebook database (there is a button for that in the book settings) and scan everything again.

Ubooquity works the other way around: you choose for each shared folder a list of users who can access it.

So in your case, the easiest solution would be indeed to create folders dedicated to kids, teenagers, adults, and restrict access accordingly.