Status Codes and Error Handling

In any robust application, errors are inevitable. How we handle them can make or break a system's reliability and user experience.

For distributed systems using gRPC, consistent error handling is crucial. It ensures that services can communicate problems clearly and clients can react appropriately.

gRPC uses a standardized set of Status Codes to indicate the outcome of an RPC (Remote Procedure Call). These codes provide a universal way to understand why a call succeeded or failed.

Think of them like HTTP status codes, but specifically for gRPC. Some common ones include:

• OK: The RPC completed successfully.
• NOT_FOUND: Resource not found (e.g., a user ID doesn't exist).
• INTERNAL: An unexpected error occurred on the server.
• UNAUTHENTICATED: The request lacks valid authentication credentials.