Which Pattern Prevents Duplicate Writes in Thymeleaf?
Problem Context Thymeleaf renders stateless HTML. When a user submits a form, the controller processes the POST and persists data. If the same POST is retried—by refresh, back button, or network retry—the same write can occur again, leading to duplicate records. Current Constraints The library offers th:object and th:field for binding, but no anti‑resubmissi
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