Order Splitting Algorithm: Graph Coloring & OPA in Golang
Order Splitting at Scale: Graph Coloring, Bin Packing, and OPA in Go Answer-first: Real-time e-commerce order splitting is a Constraint Satisfaction Problem (CSP). To determine the absolute minimum number of cardboard boxes required for a complex cart without violating safety rules or physical dimensions, the 2026 standard pipeline relies on Open Policy Agent (OPA) for dynamic business rules, Golang (gonum) for Graph Coloring (Welsh-Powell) to resolve logical conflicts, and First-Fit Decreasing Bin Packing to resolve physical constraints. This pipeline executes in under 50ms during synchronous checkout, deferring heavy Multi-Warehouse routing to async workers. ...