Code Ape Tech Column

Apr 1, 2025 · Backend Development

Designing a Payment System State Machine and Status History Table

This article explains why payment systems need a state machine, details common payment statuses, illustrates typical state transition flows, describes the design of a status‑change history table, and provides implementation guidance using hand‑written code or Spring StateMachine to ensure maintainability, auditability, and robust handling of exceptional scenarios.