PROGRESSIVE DELIVERY LAB

Can this canary take more traffic?

Rampwatch turns a few operational signals into an explicit release decision. It uses fixed guardrails and Wilson intervals so a "looks fine" dashboard does not quietly become the release policy.

Baseline

Requests Errors p95 latency, ms

Canary

Requests Errors p95 latency, ms

Ramp stage

Current traffic %

Decision

ADVANCE

NEXT STEP

25% traffic

Baseline error—

Canary error—

Error delta—

Latency ratio—

95% Wilson intervals

Baseline —

Canary —

Policy: rollback at ≥30% p95 regression, or a ≥0.5 pp error increase with separated 95% intervals; hold small cohorts and moderate regressions. These thresholds are demo policy, not universal SRE guidance. Source and tests ↗