title: running sphinx on multiple machines or a single instance
body: <p>I have an app , using ruby and thinking sphinx . right now each one of my web servers running a local sphinx daemon.
  I don't know if it's better to run a single instance of sphinx and have all the machines to point to this one or keep the current scenario ?
  the problem with the current one if the fact each machine does index build and rebuild which is a way is redundant and cause an extra load on the data base.(i'm running index and delta every 30 minutes) , on the other hand I don't what will be the down site of sphinx over the network .
  What's the best approach ?</p>