1. A method, comprising: receiving a communication from a client; routing the communication to a node included in a cluster of nodes, wherein the node is identified by a node ID included in the communication; and routing the communication within the node to an engine of a plurality of engines included in the node, wherein the engine is identified by an engine ID included in the communication; wherein the node ID uniquely identifies the node among the cluster of nodes and wherein the engine ID uniquely identifies the engine among the plurality of engines included in the node.