ProChain Domain

Commodity Procurement Mall — The first practice of open domains

Domain Positioning

ProChain is OpenDDD's first-priority business domain, building a B2B procurement mall system for commodity trading.

Attribute	Value
Domain Code	prochain
Priority	P0
Target Users	Buyers, Suppliers, Platform Operators, Industry Regulators
Core Value	Unified invoice and logistics information, convenient for industry auditing

Core Entities (Aggregate Roots)

Entity	Responsibility	Key Attributes
Enterprise	Enterprise management, certification	Name, qualifications, address
Product	Commodity, SKU	Name, specifications, category, brand
Order	Order, payment, state transitions	Order items, amount, status
Document	Invoice, logistics, audit	Invoice, receipt, logistics slip

Domain Partitioning

User Domain         → Enterprise, Address, Auth
Product Domain      → Product, SKU, Category, Brand
Order Domain        → Order, OrderItem, Payment, Logistics
Document Domain     → Document, Invoice, Receipt, Logistics
Procurement Domain  → Procurement, Supplier, Contract

Technical Architecture

• Frontend: WeChat Mini Program (Taro + React + TypeScript) MFE micro-frontend
• Backend: DDD + Serverless Functions (Alibaba Cloud FC)
• Data: Table Store + Redis + OSS
• Deployment: API Gateway + Function Compute

Open Knowledge Output

Type	Content	Link
Prompt	DDD Entity Generation	Reuse → Coding
Prompt	API Design	Reuse → Coding
Recipe	DDD + Serverless	Learn → Recipe
Recipe	WeChat Mini Program	Learn → Recipe
Roadmap	DDD + Clean Architecture	Learn → Roadmap