Define archive backup manifests with explicit format versions
Backup folders contain unnamed files with no declared schema. Add a bounded manifest describing required objects.
- Focused work estimate
- 1h 15m + prerequisites
- Priority in the scenario
- Medium
- Engineering practice
- Serialization · Validation
Estimated field mix
- Storage systems80%
- Data engineering20%
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
Fictional archive Alder backs up synthetic document metadata and generated blobs into a dedicated local directory. No real organizational data or cloud accounts are required.
Setup prerequisites
- Create synthetic metadata and generated blob fixtures.
- Provide isolated source backup and restore directories.
Preceding work
No earlier ticket is required. Complete the project setup above.
Acceptance criteria
- Manifest declares version
- Entries have size and digest
- Duplicate logical paths fail validation
Implementation constraints
- Treat manifest text as untrusted input.
Verification to include
- Parse valid fixture
- Reject duplicate and future-version entries
Deliverables
- Manifest schema and parser
Rollout and recovery
Keep unknown backup versions read-only.
Value of the work
For the engineer: Practice consistent snapshots and recoverable restoration.
For the team: Inspect whether backup success can be substantiated by a usable restore.
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.