chapter nine

9 Router: Classifying and dispatching

 

This chapter covers

  • Why fitting specialized components into a fixed hierarchy may fail and how encapsulating them behind a routing mechanism presents the group as a single, general agent
  • Using Router to direct incoming tasks to specialized sub-agents, managing their payloads and maintaining a unified communication interface
  • The structure and operation of Router instances, including the selector element, sub-agent registry, input and output forwarding, and constraint-based component choice
  • The four primary uses of Router: specialized domain triage, inference budget optimization, load balancing, and information security privilege enforcement
  • Common Router variants such as Ensemble Router, Multi-layered Router, and Proximity Router and how they address ambiguous routing, hierarchical triage, and decentralized delegation
  • Router in action in jurisdiction-aware tax advisory, complexity-driven inference budget optimization, and ensemble-based medical symptom triage

9.1 The pain point: Too many specialized components to choose from

9.2 How the Router pattern works

9.2.1 Tradeoffs

9.2.2 Implementation sketch

9.2.3 When and where to use Router

9.2.4 How Router works with other patterns

9.3 Router pattern variants

9.3.1 Ensemble router

9.3.2 Multi-layered router

9.3.3 Proximity router

9.4 Router in action: Use-case examples

9.4.1 Specialized jurisdiction-aware tax advisor

9.4.2 Complexity-driven inference budget optimizer

9.4.3 Ensemble-based medical symptom triage

9.5 Summary