需求
“Create a domain model for a customer loyalty program with point transactions, rewards, redemptions and transaction types.”
接著試試Add an expiry date to Reward.Add a referral point transaction type.
這張圖裡有什麼
看懂背後的決策。
01
Separate PointTransaction and Redemption to track earning vs spending
02
Use enumeration for transaction types (EARN, REDEEM, EXPIRE)
03
Derived attributes for totalPoints and runningBalance
When designing a point-based loyalty or rewards system in e-commerce apps.