Write the calendar recovery checklist for invalid sync state
Support needs to recover a calendar without deleting local reservations.
- Focused work estimate
- 1h + prerequisites
- Priority in the scenario
- Low
- Engineering practice
- Runbooks
Estimated field mix
- Site reliability60%
- Integrations40%
Field percentages are editorial estimates of the ticket's engineering focus. They total 100%; they are not measured time, proficiency scores, or ownership evidence.
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Project context
A fictional booking service supports consultants in multiple time zones. Recurring events, revoked access, and delayed callbacks cause missed conflicts.
Setup prerequisites
- Author synthetic calendars and a local provider double with recurrence, timezone, and access-revocation cases.
Preceding work
Complete these dependencies, or supply their agreed outputs before taking this ticket.
- BCALENDAR-101 · Distinguish all-day events from timed calendar intervals
- BCALENDAR-102 · Resolve daylight-saving gaps and repeated local times
- BCALENDAR-103 · Expand recurrence within a bounded availability window
- BCALENDAR-104 · Apply event revisions without reviving cancelled occurrences
- BCALENDAR-105 · Use incremental sync tokens without losing full-resync coverage
- BCALENDAR-106 · Project busy intervals without exposing event descriptions
- BCALENDAR-107 · Stop provider calls immediately after access revocation
- BCALENDAR-108 · Detect overlapping booking attempts against one availability revision
- BCALENDAR-109 · Assess polling versus callbacks for calendar freshness
Acceptance criteria
- Identify the calendar, grant, and sync revision.
- Show safe resync and status commands.
- Preserve local reservations while replacing imported events.
Implementation constraints
- No direct lifecycle-state edits.
Verification to include
- Recover an invalid token using the guide.
- Reject recovery for a revoked grant.
Deliverables
- Calendar support runbook.
Rollout and recovery
Rehearse against synthetic calendars before enabling a support action.
Value of the work
For the engineer: Practice temporal modeling, synchronization lifecycles, and privacy-preserving projections.
For the team: Reduce scheduling ambiguity through explicit availability contracts and recoverable synchronization.
Evidence boundaries
Outcome Evidence: Tests, patches, and runbooks are requested deliverables. They become Outcome Evidence only through a qualified Mission and immutable Evidence IDs.
Ownership Evidence: Independent adaptation must be observed under a declared verification policy and cite immutable Evidence IDs. Completing a planning ticket establishes no Ownership Evidence.