How to the view count of a question in momery?

Posted by Freewind on Stack Overflow See other posts from Stack Overflow or by Freewind
Published on 2010-06-18T04:39:55Z Indexed on 2010/06/18 4:43 UTC
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ruby-on-rails

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cache

My website is like stackoverflow, there are many questions. I want to record how many times a question has been visited. I have a column called "view_count" in the question table to save it.

When a user visited a question many times, the view_count should be increased only 1. So I have to record which user has visited which question, and I think it is too much expensive to save them in the database, because the records will be huge. So I want to keep them in the memory, and persistent the number to database every 10 minutes.

I have searched about "cache" of rails, but I haven't found an example. I need an simple sample of how to do this, thanks for help~

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