Circuit Breaker - Hipstershop

circuit-breaker-hipstershop.yaml

apiVersion: networking.istio.io/v1alpha3
kind: DestinationRule
metadata:
  name: frontend-dr
spec:
  host: frontend
  trafficPolicy:
    connectionPool:  #client connections to frontend 
      tcp:
        maxConnections: 1 # num. clients envoy will allow to frontend at any time 
      http:
        http1MaxPendingRequests: 1 # size of the request queue for frontend  
        maxRequestsPerConnection: 1  
# scan frontend every second. if > 1 consecutive 5XX error, remove frontend from the pool for 3mins
    outlierDetection:
      interval: 1s               
      consecutiveErrors: 1      
      baseEjectionTime: 3m      
      maxEjectionPercent: 100