familienarchiv/docs/architecture/db/db-relationships.puml at c3afd57e19580cf28606ca22d6488b01c3382bc0

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Marcel b3d54a12c4 feat(journeyitem): V74 — partial unique index + note-length CHECK as atomic backstops

The append dedup guard was check-then-insert: two concurrent appends of the
same document both pass exists() and both insert. The partial unique index
on (geschichte_id, document_id) WHERE document_id IS NOT NULL closes the
race; append saveAndFlush-es and maps the DataIntegrityViolationException to
the same 409 JOURNEY_DOCUMENT_ALREADY_ADDED as the friendly pre-check. The
CHECK on note length pins the 2000-char contract in the schema, mirroring
chk_text_length on transcription_blocks.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

2026-06-10 07:21:41 +02:00

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