[Tagdb] Nitins talk and future of tag systems

[ogjunk-tagdb at yahoo.com]

Hi,

--- Philipp Keller <phred at citrin.ch> wrote:

> > I mentioned Simpy on this list before.
> > I'm one of the Lucene developers and co-author of Lucene in Action
> > (Erik, the other co-author, is also on this list, I believe), so
> guess
> > what powers Simpy?
> Hehe.. can you elaborate a bit on the usage of Lucene in Simpy?
> Do you do the tag search on Lucene, but other data searches in
> PostgeSQL..? I'm curious.

I can't go into details, but I'll Lucene plays a role.

> > Simpy is also not using MySQL.  I'd looove to see your benchmarks
> run
> > on other databases, for instance PostgreSQL, or Oracle.  Any chance
> you
> > can do that?
> Hmm.. right now I am still on a clustering algorithm (powered by
> regular
> tips from Scott White.. :-), but when this is finished, I think I
> could give it a try. 

If you can find the time to do it, it would be great to see.

> But I'm more curious in doing tests with Lucene though.. I don't
> believe
> PostgreSQL will be much faster than MySQL, I think the problem of the
> lack of performacne in tag-intersection/union queries lays in the
> nature of relative databases..

Aha.  Wrong tool for the job.  That's why you can currently do only tag
"intersections" (read: conjunctive boolean queries), while Simpy can do
all kinds of other crazy things with tags or any other terms.

You can read more about it here:
http://blog.simpy.com/blojsom/blog/2005/08/15/Why_Simpy_over_del_icio_us.html

> > Regarding comments about the Popular page (and CSS and such).... I
> > can't talk about it yet, but keep an eye on Simpy.  What you
> addressed
> > is precisely what the upcoming release will address.  I better
> hurry up
> > and get to work, now that I said this in public.
> Heh! I'm looking forward to that!
> btw: I didn't find "popular" on Simpy. Did I overlook something?

No, you didn't - it's not there.  The "popular" works only when the
userbase is homogenous (e.g. all/mostly technical people).  Even you
said you can no longer stand that list of CSS sites... :)  I'll blog
about that on Simpy's blog after the release.

Otis

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Simpy -- http://www.simpy.com/ -- Find it. Tag it. Share it.