4. The method of claim 1 , wherein, when input messages for a query can be processed independent of each other, the installing step includes installing identical logic for processing such query on two or more servers in the cluster, and the input messages are divided up among the servers having the logic.
8. The method of claim 4 , wherein processing the query further comprises generating partial outputs for the query on the servers having the logic and merging such partial outputs to generate output data for the query.