Translate upload questions into bounded telemetry events
Product wants to understand upload failures, but the event captures the entire form submission.
- Focused work estimate
- 1h + prerequisites
- Priority in the scenario
- Medium
- Engineering practice
- Event modeling · Data minimization
Estimated field mix
- Privacy engineering80%
- 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
A fictional document workspace wants to measure upload completion and failure. Its prototype sends filenames, document titles and raw errors to general analytics. Replace that path with a minimal event contract using synthetic traffic.
Setup prerequisites
- Create synthetic upload workflows and a local collector that captures received payloads.
- Define measurement questions and a separate restricted diagnostic store fixture.
Preceding work
No earlier ticket is required. Complete the project setup above.
Acceptance criteria
- Define attempted, accepted, completed and failed events with bounded reason categories.
- Map every field to a stated measurement question.
- Exclude filenames, document text, form values and unrestricted URLs.
Implementation constraints
- Counts describe workflow outcomes, not ability, attention or authorship.
Verification to include
- Answer the stated questions from a synthetic sequence.
- Remove a field without a measurement purpose and verify the report remains possible.
Deliverables
- Question map and minimal event contract
Rollout and recovery
Review the contract before changing collection; unknown fields remain disallowed.
Value of the work
For the engineer: Practice minimization, safe failure handling and correct aggregates.
For the team: Produce useful operational measurements with a reviewable collection boundary and disclosure regression suite.
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.