What does service mesh resilience in Envoy refer to?

Service mesh resilience in Envoy specifically pertains to the ability to maintain service continuity and high availability in the face of failures. This is where retry mechanisms and circuit breakers come into play, as they are essential features designed to improve the robustness and reliability of services within a distributed system.

Retry mechanisms enable the system to attempt a request multiple times before determining that the request has failed, which is crucial for transient errors that may occur in network communications. Circuit breakers help manage requests to services that are experiencing faults or latency issues by temporarily stopping requests to these services, allowing them to recover and preventing further strain on the system.

These features work together to ensure that services can handle common failure scenarios gracefully, thus contributing to the overall resilience of the service mesh. Other options, while related to functionality in Envoy, do not directly capture the specific aspect of resilience that focuses on error handling and recovery.