gRPC 4 DEADLINE_EXCEEDED vs 6 ALREADY_EXISTS
Both gRPC 4 (DEADLINE_EXCEEDED) and 6 (ALREADY_EXISTS) 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, 6 means that the entity that a client attempted to create already exists. For example, a file or directory that the RPC was supposed to create already exists.
설명
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.
이 코드를 보게 되는 경우
The RPC took longer than the configured deadline allows. Common in slow network conditions, overloaded servers, or when the deadline is set too aggressively.
해결 방법
Increase the client deadline, optimize the server-side processing, or add server-side caching. If the operation might have succeeded, check idempotency before retrying.
설명
The entity that a client attempted to create already exists. For example, a file or directory that the RPC was supposed to create already exists.
이 코드를 보게 되는 경우
A create operation failed because a resource with the same unique identifier or name already exists in the system.
해결 방법
Use a different identifier, or switch to an upsert/update operation if overwriting is acceptable. Check for existing resources before creating.
주요 차이점
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 6: The entity that a client attempted to create already exists. For example, a file or directory that the RPC was supposed to create already exists.
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 6 when a create operation failed because a resource with the same unique identifier or name already exists in the system.
언제 어떤 것을 사용할지
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 6 (ALREADY_EXISTS): Use a different identifier, or switch to an upsert/update operation if overwriting is acceptable. Check for existing resources before creating.