Database Migration Timeline — Envoy (MySQL → PostgreSQL)

Envoy platform · MySQL → PostgreSQL

Database Migration — Critical Path & Timeline

Raizcorp has set a target cut-over of Monday 17 August 2026. This chart back-plans from that evening, links each task to what it depends on, and traces the critical path in red. Work with no dependency on Raizcorp's inputs can start today — those tasks carry a NOW tag. Weekends and SA public holidays are excluded.

Prepared for Raizcorp· Advantage Learn· Target cut-over — Mon 17 Aug 2026

Plan your date

The only client-side gate. This is what unlocks infrastructure, the dress rehearsal and reporting — the critical path.

The evening the platform switches over. The chart flags whether it's still reachable from the inputs date.

Today
—
Inputs by
—
Earliest cut-over
—
Target
—
Full close-out
—

Jump to: inputs by 28 Jul (hits target)inputs this week

How to read it

Lead engineer (Nick) Assisting engineer (Paul) Raizcorp Shared Critical path Cut-over NOW No client input needed — startable today Public holiday (Women's Day, 10 Aug) Slack / float
Phase / task  ·  depends on

What this tells you

The critical path is Raizcorp's inputs, not our code

  • Start the engineering now. Making the code database-agnostic, the CI pipeline, the test-environment migration and regression QA depend only on our own codebase — none of it needs the report inventory or budget. That whole branch (the NOW tasks) can begin today and then carries days of slack.
  • The date is gated by reporting. The red chain — inputs land → infrastructure → dress rehearsal → reporting rebuild → validation → dry run → cut-over — is the only thing that sets 17 Aug. Nothing on it can start until the inventory and budget are in hand.
  • So the single lever is the inputs date. Every working day the inputs slip, the cut-over slips with them. Move the inputs date in the box above to see it.

Assumptions & reading notes

  • Bars show elapsed time, not raw effort — focused work plus the genuine waits (report validation, QA, the fixed 3-day monitoring window, sign-off).
  • Hatched tails are slack — how far a task could slip before it would start pushing the cut-over.
  • One public holiday — Women's Day (observed Mon 10 Aug) is a non-working day; the schedule routes around it.
  • Inputs by Tue 28 Jul holds 17 Aug. Earlier buys buffer; later moves the date day-for-day.