Persist edge-configuration acknowledgement after active settings commit
A crash after applying settings but before reporting leaves the control plane uncertain and repeated applies inconsistent. Reconcile local active revision on restart.
- Focused work estimate
- 4h + prerequisites
- Priority in the scenario
- High
- Engineering practice
- Crash recovery · Durability
Estimated field mix
- Embedded and edge40%
- Storage systems30%
- Distributed systems30%
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 information-display gateways receive brightness schedules and cache limits. These settings affect only a software display emulator; no real devices, safety controls or customer data are used.
Setup prerequisites
- Define synthetic configuration schema and supported device capabilities.
- Implement local control-plane and gateway adapters with delayed messages.
Preceding work
Complete these dependencies, or supply their agreed outputs before taking this ticket.
- CCONFIG-101 · Validate emulated display brightness and cache-limit settings
- CCONFIG-102 · Keep desired and reported edge configuration separate
- CCONFIG-103 · Scope emulated gateway configuration reads by organization
- CCONFIG-104 · Reject stale configuration revisions arriving at the edge gateway
- CCONFIG-105 · Stage edge settings before committing a complete configuration
- CCONFIG-106 · Reject edge settings unsupported by the declared gateway capability version
Acceptance criteria
- Active revision persists with settings
- Restart can replay acknowledgement
- Uncommitted settings cannot be reported applied
Implementation constraints
- Define commit ordering in the local adapter.
Verification to include
- Crash after settings commit
- Crash before commit
Deliverables
- Apply journal and restart cases
Rollout and recovery
Pause new applies until active-state reconciliation completes.
Value of the work
For the engineer: Practice desired/reported state, compatibility and rollback.
For the team: Inspect whether remote configuration preserves working settings through offline and partial outcomes.
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.