Synapse/ESB clustering guide

Finally we got it published on WSO2 Oxygen Tank.....

We have been trying our best to get a clustering guide for synapse and especial thanks should goes to Eric Hubert from Jamba! GmbH, (one of the great users of Synapse/ESB) for providing the great feed back and the support he given as an author.

This clustering guide describes how to enable clustering as well as the basics of clustering and preferred deployment model. At the same time this further specifies a set of samples of clustered deployment of statefull mediators like Throttle and Cache.