Natterings about history files

[Russ Allbery]

bill davidsen <davidsen at tmr.com> writes:

>   Perhaps this could be delayed until some time after the article (or
> cancel for the article) is received, to avoid lookup delays. But after a
> day or so, it's unlikely that the info will be needed often enough to
> make the performance hit offset the gain in instant expire.

I went down that road too in my head, and then realized that the problem
is that if you're accepting a new article that you've never seen before,
you have to do a lookup in *all* your history files, or otherwise you may
as well not keep them.  So it's not true that older history files get
fewer lookups, unfortunately; new articles are the common case of stuff
that makes it through the cache.  :/

-- 
Russ Allbery (rra at stanford.edu)             <http://www.eyrie.org/~eagle/>