# Local Observability Baseline

- Generated at: 2026-03-27 18:20:30 +08:00
- Scope: single-node local baseline, not a production traffic certification result

## Concurrent Login Baseline

- Source command: `go test ./internal/e2e -run TestE2EConcurrentLogin -v -count=1`
- Concurrency configured by test: 20
- Result: success=2 fail=18 status=map[200:2 429:18] total=117.7617ms avg=13.83308ms
- Interpretation: current login rate limiter absorbs most burst traffic with 429, while successful requests remained sub-second and no 5xx appeared.

## Browser Flow Baseline

- Source command: `cd frontend/admin && npm.cmd run e2e:auth-smoke:win`
- login-initial: 99ms
- login-desktop: 186ms
- login-tablet: 117ms
- login-mobile: 96ms
- Interpretation: current raw CDP browser validation stayed well below the existing `HighResponseTime` alert threshold of 1s in `deployment/alertmanager/alerts.yml`.

## Evidence Files

- concurrent-login-20260327-182005.txt
- raw-cdp-auth-smoke-20260327-182005.txt