cluster configuration

Hello everybody,

This is pertaining to the cluster configuration.

I'm not all that familiar with clustering and its technology but the over all understanding is that it increase the performance of a webiste by using multiple resources. 

The current hosting company(blueHost) i'm with doesn't support clustering (asked and there answer was no) but the cost is right, for $100 a year i'm getting pretty good resources for now.

I like to start another website and would like to try a hosting compay that does support clustering.

Does anyone know of a hosting compay who is reasonable interms of cost and provides clustering?

tried google looked at a few hosting company but they dont go into details about clustering.

Any help you can provide would be greatly appreciated.
thanks everybody