[ic] ups_cache expires

[Mike Heins]

Quoting Steve Graham (icdev at mrlock.com):
> 
> >>
> >> UPS doesn't change rates that often, and we aren't concerned about
> >> the data accumulation.
> >
> >They do sometimes change fuel surcharges and areas covered by Xarea.
> >Also, you would need to closely watch things in early February when
> >rates do change.
> >
> >I think a day is reasonable, actually. It should cut load dramatically
> >without problems with wrong rates.
> >
> >--
> >Mike Heins
> 
> It's not a big deal to change the source - just trying to make 
> minimal changes in order to keep up with future upgrades.
> 
> One other thought on ups_cache might be to store the 1st three digits 
> of the ship-to zip code in the lookup table - this could save many 
> entries from being added, especially if using www lookups on Ground, 
> 3 day, 2 Day and 1 day, etc.

Patches are always welcome! 8-)

> 
> I know this is not really an issue on 1 day cache expire, but with 
> expire set to 30+ days - it will add up.

It also cuts down unnecessary traffic. +1.

-- 
Mike Heins
Perusion -- Expert Interchange Consulting    http://www.perusion.com/
phone +1.765.647.1295  tollfree 800-949-1889 <mike at perusion.com>

Being against torture ought to be sort of a bipartisan thing.
-- Karl Lehenbauer