Translate document-processing expectations into a bounded workload model
A design request says uploads should be instant but does not separate transfer time from extraction completion.
- Focused work estimate
- 1h 30m + prerequisites
- Priority in the scenario
- Medium
- Engineering practice
- Requirements analysis · Capacity modeling
Estimated field mix
- System design50%
- Performance engineering50%
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 procurement portal extracts metadata from uploaded documents. Product wants a responsive upload flow; security wants parser failures isolated from customer-facing processes.
Setup prerequisites
- Create synthetic upload metadata and a fake processing provider.
- Treat diagrams as proposals; implement only local contract probes.
Preceding work
No earlier ticket is required. Complete the project setup above.
Acceptance criteria
- Define upload acceptance and extraction completion separately.
- State hypothetical size, arrival and concurrency assumptions.
- List unresolved product constraints with owners.
Implementation constraints
- Use a synthetic scenario of 2 MiB median and 20 MiB maximum documents; label it an assumption.
Verification to include
- Calculate transfer time under two named bandwidth assumptions.
- Show how a maximum-size document changes the completion budget.
Deliverables
- Workload worksheet and clarified latency definitions
Rollout and recovery
Review assumptions before design approval; revise the worksheet when constraints change.
Value of the work
For the engineer: Practice boundary decisions backed by executable consistency and failure checks.
For the team: Review architecture tradeoffs with explicit assumptions before infrastructure commitment.
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.