Circuit Breaking
Circuit breaking enables to fail quickly and apply back pressure downstream as soon as possible. Istio enforces circuit breaking limits at the network level using envoy sidecar as opposed to having to configure and code each application independently.
There is two types of Circuit Breaker:
Maximum Connections: Maximum number of connections to a service. Any excess connection will be pending in a queue. You can modify this number by changing the maxConnections field. Maximum Pending Requests: Maximum number of pending requests to a service. Any excess pending requests will be denied. You can modify this number by changing the http1MaxPendingRequests field.
