RAID & memcached

[Paul Querna]

BUSTARRET, Jean-Francois wrote:
> I'm thinking about adding memcached-backed session management to some of 
> our PHP apps. In this case, I do not want to loose data (but do not want 
> to spend too much money on data protection either).
>  
> A simple RAID layer over memcached would be fine. 
> read-from-one/write-to-all is easy to implement, bot not very efficient 
> & does not scale well.
>  
> Has anyone played with RAID over memcached ?

You don't want memcached.  memcached is an unreliable distributed hash 
based cache. Doing anything more with it is like trying to fit a square 
peg into a round hole.

You might be better off writing something on top of Spread[1] for group 
communication/reliability.

-Paul

[1] - http://www.spread.org/