87bbfc50a1
## Summary Add a DB-backed lease to prevent duplicate `.sqlite` backfill workers from running concurrently. ### What changed - Added StateRuntime::try_claim_backfill(lease_seconds) that atomically claims backfill only when: - backfill is not complete, and - no fresh running worker currently owns it. - Updated backfill_sessions to use the claim API and exit early when another worker already holds the lease. - Added runtime tests covering: - singleton claim behavior, - stale lease takeover, - claim blocked after complete. - Set backfill lease to 900s in production and 1s in tests. ### Why This avoids duplicate backfill work and reduces backfill status churn under concurrent startup, while preserving current best-effort fallback behavior. |
||
|---|---|---|
| .. | ||
| migrations | ||
| src | ||
| BUILD.bazel | ||
| Cargo.toml | ||