I see two things, neither of which are probably causing your performance problems.

1. prepare_cached is unnecessary here, as it only gets called two times with two explicitly different statements

2. Why set AutoCommit to 1 and use begin_work/commit everywhere? Why not turn it off and simply commit when you want?

Again, given the time that I have been able to devote to looking it over, it looks good to me, and I cannot explain it away.
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It's sad that a family can be torn apart by such a such a simple thing as a pack of wild dogs

In reply to Re: DBI performance problem with MySQL by RazorbladeBidet
in thread DBI performance problem with MySQL by e2ka

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