Rails and thinking_sphinx when I should do reindex?

Question

I need run ts:reindex when smth add in model or destroy from model. How should I do this?

1. Write cron job (for example run every hour).
2. I tried add ts:reindex in model callbacks, but this does not work for me.
3. Or is there a common way to solve this problem?

Using:

thinking-sphinx (2.0.11)
rails (3.1.3)

Answer 1

Take a look at deltas. You can read about them there http://freelancing-god.github.com/ts/en/deltas.html Cron job is an option also, but deltas much better, they simulate real-time index.