greg, how is your application written? is it fairly modular? you could build an n-tier system by assigning different components of the application to different pieces of hardware. then you could have the components communicate via a local high speed network. soap would be a good protocol for the communication. http://www.phppatterns.com/docs/design/a_quick_intro_to_ntier?s=tier caching is a common performance tool as well. this is a different approach though, but can be used in tandem w/ the n-tier concept. -nathan On 8/6/07, greg patmore <greg@xxxxxxxxxx> wrote: > > Hi all, > > > > I was wondering if anyone could point me toward some good resources > regarding suggestions on handling user preferences over a cluster in a > heavy traffic website. > > > > Online resources are preferable:-), but thanks for any help you could > give. > > > > Regards, > > Greg > > > >