domain-ecommerce:order-processing

E-commerce order state transitions are managed through an explicit state machine handling pending, confirmed, processing, shipped, delivered, cancelled, and returned states. This ensures valid progression and logs state changes for audit trails.

Split shipments in order fulfillment workflows are supported natively, allowing a single order to be divided into multiple shipments. This handles complex pick, pack, and ship processes alongside Warehouse Management System (WMS) integration.

Event sourcing for order processing captures every state change as an event, creating a complete, immutable order history audit trail. This mechanism supports Return Merchandise Authorization (RMA) flows by reconstructing past states.

Atomic writes are required for processing e-commerce order state and event logs. Explicit validation of state changes paired with atomic writes ensures data integrity and prevents partial updates during the order lifecycle.

Customer and internal notifications can be generated and dispatched during the order fulfillment lifecycle. The notification mechanism is integrated directly into the order processing state transitions and fulfillment workflows.

A state machine for order processing enforces explicit validation for every status transition, preventing invalid state changes. Unlike basic flags, it provides structured audit logging, supports event sourcing, and manages complex returns.