gRPC 4 DEADLINE_EXCEEDED vs 16 UNAUTHENTICATED
Both gRPC 4 (DEADLINE_EXCEEDED) and 16 (UNAUTHENTICATED) belong to the gRPC Status Codes category. 4 indicates that the deadline expired before the operation could complete. For operations that change the state of the system, this error may be returned even if the operation has completed successfully. Meanwhile, 16 means that the request does not have valid authentication credentials for the operation.
Описание
The deadline expired before the operation could complete. For operations that change the state of the system, this error may be returned even if the operation has completed successfully.
Когда вы это видите
The RPC took longer than the configured deadline allows. Common in slow network conditions, overloaded servers, or when the deadline is set too aggressively.
Как исправить
Increase the client deadline, optimize the server-side processing, or add server-side caching. If the operation might have succeeded, check idempotency before retrying.
Описание
The request does not have valid authentication credentials for the operation.
Когда вы это видите
No credentials were provided, or the provided token/certificate is expired or invalid. Different from PERMISSION_DENIED (code 7), which means authenticated but not authorized.
Как исправить
Provide valid authentication credentials (e.g., refresh the OAuth token, regenerate the API key, or renew the client certificate).
Ключевые различия
gRPC 4: The deadline expired before the operation could complete. For operations that change the state of the system, this error may be returned even if the operation has completed successfully.
gRPC 16: The request does not have valid authentication credentials for the operation.
You encounter 4 when the RPC took longer than the configured deadline allows. Common in slow network conditions, overloaded servers, or when the deadline is set too aggressively.
You encounter 16 when no credentials were provided, or the provided token/certificate is expired or invalid. Different from PERMISSION_DENIED (code 7), which means authenticated but not authorized.
Когда что использовать
For 4 (DEADLINE_EXCEEDED): Increase the client deadline, optimize the server-side processing, or add server-side caching. If the operation might have succeeded, check idempotency before retrying. For 16 (UNAUTHENTICATED): Provide valid authentication credentials (e.g., refresh the OAuth token, regenerate the API key, or renew the client certificate).