On 1/7/23 05:29, Peter J. Holzer wrote:
[snip]
> If I understood correctly, you have to delete about 3 million records
> (worst case) from the main table each day. Including the other 8 tables
> those are 27 million DELETE queries each of which deletes only a few
> records. That's about 300 queries per second. I'd be worried about
> impacting performance on other queries at this rate.
300 *records*/second. Fewer DELETE statements if there are one-many
relationships with the child tables.
> I'd go for a middle ground: Instead of expiring once per day, use a
> shorter interval, maybe once per hour or once per minute. That will
> (probably) make each expire job really quick but still create much less
> load overall.
--
Born in Arizona, moved to Babylonia.