2021-11-26 17:56 (UTC+0300), Дмитрий Степанов:
> I have approx 5K-10K (5 000 - 10 000) rules.
> On average I have 10-20 matches (60 max).
> I don't need to insert/delete/update rules frequently - you can consider
> rules being permanent which are loaded once on startup.

Never mind my suggestion then.
I made a benchmark with your case parameters
and even a brute-force scan of all rules outperforms regex database.
When Hyperscan performed well in my experience,
it was with <100 rules and any single match.
Sorry for misdirection and thanks for an interesting algo problem :)

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