[Ruby] [ANN] db_memcache_store plugin for Rails Sessions

[Eric Hodel]

On Jan 21, 2007, at 16:18, Geoffrey Grosenbach wrote:
> Traditionally, using memcached has been one of the fastest ways to  
> store sessions. However, if you restart memcached, all your  
> sessions will be erased and all your users will have to login again.
>
> I have heard that the Robot Coop uses a system where sessions are  
> stored both in the database (for persistence) and in memcached (for  
> easy access).

Unless things have changed, sessions don't touch the DB.  Instead a  
cookie has an encrypted copy with the information necessary to log in  
a user should the session disappear.  The apps are light on the  
session (flash only, IIRC), so persistence isn't a problem.

> This library is an attempt to recreate that system. Sessions  
> updates are saved to the database, but are also kept in memcached  
> for quick access. If you turn off your memcached servers, the  
> database will be used exclusively.

I hear that this is the way things are typically run for session- 
heavy apps.

-- 
Eric Hodel - drbrain at segment7.net - http://blog.segment7.net

I LIT YOUR GEM ON FIRE!