Checkout v2 release

The production canary has reached 10%. Customer checkout is healthy while release checks collect enough evidence for the next traffic increase.

candidate traffic
10%
checks passing
2 of 5
last observation
14:22:24

Next checkpoint: 14:24. Continue sampling at 10%; stop the rollout immediately if a customer guardrail fails.

Checks

Two checks pass. Three are still collecting.

Check Result Observed / required
Error rate Pass 0.11% / below 0.50%
p95 latency Pass 184 ms / below 300 ms
Order parity Collecting 1,204 / final count pending
Finance export Collecting first complete batch pending
Rollback target Queued comparison not started

Run log

Example snapshot ending at 14:22:24. New events append without moving a user who has scrolled back. 

14:18:03 builder   candidate=checkout-v2 digest=4f8b2d1 signed=true
          14:18:41 verifier  unit=passed integration=passed provenance=recorded
          14:22:01 deployer  canary started environment=production
          14:22:08 router    checkout-v2 traffic=5%
          14:22:12 observer  error_rate=0.11% threshold=0.50%
          14:22:18 observer  p95=184ms threshold=300ms
          14:22:24 router    checkout-v2 traffic=10%

Release

Environment
Production
Candidate
checkout-v2
Stable
checkout-v1
Observed
14:22:24

Release steps

  1. done · 14:18 Build and verify the candidate Image signed and provenance recorded.
  2. active · now Expand the canary Candidate serving 10% of production checkout traffic.
  3. planned Pass release checks Three comparisons are still collecting.
  4. planned Expand to 100%
  5. planned Observe and complete
Release notes · 3 changes
  • Keep partial-refund state through checkout retries.
  • Write refund adjustments to the finance export.
  • Add parity checks before production promotion.
Release owners · 5

working

deployer Expanding candidate traffic while guardrails stay green.

working

ledger Comparing candidate and stable order counts.

waiting

finance Ready to inspect the first complete export batch.

working

observer Sampling error rate and latency during canary expansion.

done

builder Signed the candidate and recorded its provenance.
Rollback procedure · 3 steps
  1. Route new checkout sessions to checkout-v1.
  2. Drain the candidate after active sessions finish.
  3. Verify order counts and finance-export isolation.
Code changes · 2 files, +18 −4