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fix: hub-side dedup for ESP32 offline status replay (CUB-239)
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- Add migration 002: UNIQUE index on status_logs(camera_id, recorded_at)
- Upgrade migration system to version-tracked (schema_version table)
- Prevents race-condition double-inserts that application-level COUNT(*) check cannot guard against
- Complements existing application-level dedup from CUB-230
This commit is contained in:
Hermes
2026-05-23 09:01:21 -04:00
parent fe193701ae
commit 74c8697e57
2 changed files with 48 additions and 12 deletions
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internal/db/migrations/002_dedup_unique_index.sql
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-- Migration: 002_dedup_unique_index
-- Add a UNIQUE index on (camera_id, recorded_at) to enforce hub-side
-- deduplication for ESP32 offline status replay (CUB-239).
-- This prevents race-condition double-inserts that a pure SELECT COUNT(*)
-- check cannot guard against.
CREATE UNIQUE INDEX IF NOT EXISTS idx_status_logs_unique_entry
ON status_logs(camera_id, recorded_at);