20. The machine-readable medium of claim 18 , wherein configuring the Rete rule engine comprises: turning off a left node memory for each of a plurality of nodes in a Rete network of the Rete rule engine; and disconnecting a left input to a first one of one or more two-input nodes in the Rete network.
18. The non-transitory machine-readable medium that provides instructions that, if executed by a processor, will cause the processor to perform operations comprising: configuring a Rete rule engine to enter into a sequential mode; and using the configured Rete rule engine to evaluate a rule set having a plurality of rules against a set of data objects in a stateless manner.