https://issues.apache.org/SpamAssassin/show_bug.cgi?id=6444

Bradley Kieser <[email protected]> changed:

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--- Comment #5 from Bradley Kieser <[email protected]> 2010-06-03 20:19:07 EDT ---
(In reply to comment #3)
> +1 on logic and patch though I don't use postgres.  Bradley, can you confirm
> the new patch diffed from the current version solves the issue and works for
> you, please?

I can certainly confirm that these changes work! We tested it and then promoted
into production. I would hope that others will test it too, but I looked in the
Postgres activity monitor and saw the correct SQLs in there and the difference
to the load was absolutely enormous!

The problem with the "IN" operator was that with a larger database and a high
volume of emails, performance degradation was exponential. Now we are unable to
measure it because the load has been reduced so much we don't see any
degradation at all.

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