1. A non-transitory machine-readable storage medium encoded with instructions for execution by a network node, the medium comprising: instructions for establishing context objects in memory in response to receiving a message, wherein the context objects have respective context object types based on respective pre-stored context artifacts that define the respective context object types; and instructions for processing the received message comprising: instructions for accessing an established context object in memory; and instructions for performing at least one action based on the processing the received message.