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Delivery plan · Amber

Five gates carry RFC 014 from decision to handoff

The 24 engineer-week baseline runs from 2026-08-31 to 2026-11-20; decision and environment ownership remain the active dependencies.

Milestone rail

  1. Design accepted

    RFC 014 and requirements bind delivery.

  2. Chaos environment ready

    RAID-01 closes or the forecast moves.

  3. Staging dual-write

    Both paths observed before cutover.

  4. Readiness decision

    Evidence and waivers reviewed.

  5. Production to handoff

    Cutover, hypercare, close on 2026-11-20.

Workstream board

Runtime

Platform: dispatcher, queues, consumers.

Assurance

Reliability: failure behavior and gate.

Producers

Checkout, Catalog, Inventory fixtures by 2026-10-16.

RFC 014 delivery dependencies and the critical path Work runs left to right from the RFC 014 decision on 2026-09-01 to production and handoff from 2026-11-02 to 2026-11-20. The decision unblocks the chaos environment and the dispatcher work. The dispatcher feeds staging dual-write and the chaos tests; the chaos environment also feeds the chaos tests. Dual-write, chaos tests, and producer retry fixtures all gate the readiness decision on 2026-10-28, which gates production. The accent marks the critical path through the chaos environment, RAID-01, whose owner has not confirmed the 2026-09-18 date. RFC 014 decision 09-01 Dispatcher + two queues Environment chaos · 09-18 Dual-write staging 10-12 Chaos tests one queue down Retry fixtures producers 10-16 Readiness decision 10-28 Production 11-02 → 11-20 RAID-01:owner unconfirmed accent: critical path — a slip here moves production Dates are 2026, month-day.
Dependencies in date order. The critical path runs through the chaos environment, RAID-01.