使用rails存储会话地理定位结果的最佳方法是什么？

I'm working on a location based app and I'd like to store the location of a user from their IP address in rails. I'm using geokit currently and I'm able to get the location via the IP of the user but I'm wondering what the best way to store this information is without storing to the database (so first time/unregistered users can benefit from the location features without being registered/logged in).I'm working on a location based app and I'd lik