> Don't you think that instead of caching the blobs rather the
> transaction handling should be changed?

No. Auto-commit, in our opinion, is not very useful mode in database
environment. But since this is a specification, we have to support it
somehow. But this "somehow" should not be the neither resource
inexpensive, not performant.

If you use non-autocommit mode, everything is fine.

BTW, I have found the bug, and I'm fixing it now.

Best regards,
Roman Rokytskyy