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Your JPA Find-or-Create Race Fix Is Dead Code (save() Doesn't Flush)
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Your JPA Find-or-Create Race Fix Is Dead Code (save() Doesn't Flush)

DEV Community: java·Anand Rathnas·13 days ago
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The classic 'insert, catch the unique violation, re-read' pattern silently doesn't work with JPA — because save() doesn't flush, the violation fires at commit, outside your try/catch. Here's why, and the fix.

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