And you’re right: 25 minutes is ludicrous. But it seems to be consistently ludicrous. Maybe that kind of query is an insane edge case that triggers a hideously inefficient codepath in MySQL. Who knows?

Good idea to see what indexes are on that table (don’t know as the table was created by Rails using its defaults) and perhaps play around seeing how long it takes to prune it using different methods.

On the other hand, switching to cookie-based sessions would be a one-line environment.rb tweak so may just go that way too.

It took a while to get over my fear of messing with the Rails Black Box™ but eventually I just wrote my own, which was very easy, and now I’m much happier. Weird custom classes to store Flash data? Marshalling plain text for unknown reasons? Fuck that shit.

I can write up a (brief) tutorial of how to do this if anyone is interested.

It might be interesting to recreate a huge table like that, with random timestamps, and test different strategies of going about that task. I would also be interested to test CouchDB against that scenario, I haven’t done that yet.

Still, you had let stale sessions accumulate for 30 days or more. After the initial big purge, surely the daily cron job wouldn’t take more than a minute or so? I wouldn’t have thought that was such a big deal, certainly less painful than redoing the whole thing with cookies…

In the light of this I’m actually thinking of switching to the cookie store, even though I’ve never liked it (for the reasons already discussed here and elsewhere).

More details on the query performance at: http://rails.wincent.com/issues/1142

Some disturbing evidence regarding Chinese cloning and genetic experiments has been discovered that may lead to the termination of Li Yuchun.

Please view these incredible photo comparisons and join the fight against these atrocities.

Sincerely,

ICM

Please see http://fukamachi.org/wp/2008/10/15/li-yuchun-recent-photos/

Actually, I am not Japanese. But, I do speak some Japanese, and live in Japan and Australia. You should definitely visit Japan, maybe you would love it. Right now, I am in Sydney, Australia.

I could only watch the Super Girl competition in Japan because I downloaded it.

Regarding your question about Corns, let me quote my friend:

As fans of Yuchun, we call ourselves “Corns,” a play on a Chinese pun, Yu mi, which sounds similar to “fans of Yu.” We affectionately call Li “Chunchun” (CC) or just “Chun”.

I hope that answers your question!

And unfortunately, I could not meet her in person - though I would surely like to. However, don’t be misled - I am not a true fan of Yu Chun. I don’t like much Chinese music. I like her and admire her and follow her career with some interest, but I wouldn’t call myself a “fan” like you. I posted this just to educate other westerners who don’t know about her, or the sociopolitical phenomenon her victory represented.

(I edited this comment several times as my mood changed - Sho)

I always want to hear what people have to say about some things I care about it. So, tell everyone your opinion without reservation!