patterns

Canary deployment pattern with gradual traffic shifting, real-time metrics monitoring, automatic rollback triggers, and progressive rollout to full production.

Full FlowZap Code

Deployment { # Deployment Pipeline
n1: circle label:"Start"
n2: rectangle label:"Build container image"
n3: rectangle label:"Push to registry"
n4: rectangle label:"Complete rollout"
n5: circle label:"End"
n1.handle(right) -> n2.handle(left)
n2.handle(right) -> n3.handle(left)
n3.handle(bottom) -> CanaryController.n6.handle(top) [label="Deploy canary"]
n4.handle(right) -> n5.handle(left)
}
CanaryController { # Canary Controller
n6: rectangle label:"Deploy to 5% of pods"
n7: rectangle label:"Configure traffic split"
n8: rectangle label:"Wait observation period"
n9: diamond label:"Metrics healthy?"
n10: rectangle label:"Increase to 25%"
n11: rectangle label:"Rollback canary"
n12: diamond label:"Still healthy?"
n13: rectangle label:"Increase to 50%"
n14: rectangle label:"Full rollout 100%"
n6.handle(right) -> n7.handle(left)
n7.handle(right) -> n8.handle(left)
n8.handle(right) -> n9.handle(left)
n9.handle(right) -> n10.handle(left) [label="Yes"]
n9.handle(bottom) -> n11.handle(top) [label="No"]
n10.handle(right) -> n12.handle(left)
n11.handle(top) -> Deployment.n4.handle(bottom) [label="Aborted"]
n12.handle(right) -> n13.handle(left) [label="Yes"]
n12.handle(bottom) -> n11.handle(top) [label="No"]
n13.handle(right) -> n14.handle(left)
n14.handle(bottom) -> Monitoring.n15.handle(top) [label="Monitor"]
}
Monitoring { # Monitoring
n15: rectangle label:"Track error rate"
n16: rectangle label:"Measure latency p99"
n17: rectangle label:"Check resource usage"
n18: diamond label:"All metrics pass?"
n19: rectangle label:"Mark deployment success"
n20: rectangle label:"Trigger automatic rollback"
n15.handle(right) -> n16.handle(left)
n16.handle(right) -> n17.handle(left)
n17.handle(right) -> n18.handle(left)
n18.handle(right) -> n19.handle(left) [label="Yes"]
n18.handle(bottom) -> n20.handle(top) [label="No"]
n19.handle(top) -> Deployment.n4.handle(bottom) [label="Success"]
n20.handle(top) -> Deployment.n4.handle(bottom) [label="Rolled back"]
}

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