Attendance Backfill Operations

Summary

Backfill tooling migrates supported Shift, weekly-off and employee-assignment foundation data from a read-only legacy source into Attendance-owned storage.

Audience

• Migration engineers, database owners, QA, architects, and release approvers

Backfill/cutover flow

Dry run writes nothing. Apply is target-upsert-only and designed for idempotent reruns. Resume uses completion markers. Validation compares supported source/target scope; warnings and mismatches require reconciliation before cutover.

Backfill does not migrate all daily Attendance data and is not authorization to access production databases. Owners must approve source/target scope, backups, maintenance timing, evidence, rollback boundary, and sensitive-data handling. No production commands are provided.

Source References

• microservices/src/attendance-service/Backfill/ShiftPolicyBackfillCli.cs
• microservices/src/attendance-service/Backfill/ShiftWeeklyOffBackfillRunner.cs
• microservices/src/attendance-service/Backfill/ShiftPolicyBackfillValidator.cs
• microservices/scripts/smoke-attendance.ps1

Related Articles

• Attendance operations
• Attendance troubleshooting
• Attendance technical documentation

See Also

• Attendance database documentation
• Attendance events documentation

Keywords

• Attendance operations
• Support
• Reliability

Revision Information

• Status: Draft
• Last reviewed: 2026-07-15
• Review cycle: Quarterly