Michel, sorry if already answered- but how do you use the hit table? Is it for manual trawling to track particular activity or ???
We have a fairly busy site- potentially hundreds of hits per second- and we do as Al suggested, except that we write each hit as a row into a date branded text .log file. IOW a new .log every day.
This makes it very easy to archive or delete historic hits and Windows search makes it very easy to locate an IP or customer ID or whatever on a particular day or across several weeks. You can't do table joins into the log- but maybe that's not necessary to use your hits records.
"... They ne'er cared for us
yet: suffer us to famish, and their store-houses
crammed with grain; make edicts for usury, to
support usurers; repeal daily any wholesome act
established against the rich, and provide more
piercing statutes daily, to chain up and restrain
the poor. If the wars eat us not up, they will; and
there's all the love they bear us."
-- Shakespeare: Coriolanus, Act 1, scene 1