gRPC uses built-in mechanisms to handle network errors and retries. It employs HTTP/2 as its transport protocol, which inherently provides features like flow control, error handling, and multiplexing requests over a single TCP connection. For retry logic, gRPC client libraries can automatically retry failed RPCs according to the policies defined in service config. The policy specifies conditions under which an RPC should be retried (e.g., on certain status codes) and backoff parameters for controlling the delay between retries. Additionally, it supports hedging requests to multiple servers simultaneously when latency is critical.
