Describe the bug

It looks Ablog isn't safe for parallel reading (introduced in ad5665a).

But it's safe for parallel writing (4f9ae64).

Both changes are recent (summer this year) and made by @nabobalis :-) What lead you to these changes? :-)

I've add -j auto to sphinx-build (use as many CPU cores as possible) recently and noticed Ablog doesn't detect any single post and all postlists were empty. With -j 1 (use single core, default value) Ablog works again.

It would be nice to fix it, but I am unsure about the reasons. As "workaround" I suggest change to "parallel_read_safe": False, "parallel_write_safe": True.

To Reproduce

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Screenshots

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System Details

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Installation method

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