Error Handling Patterns

What it does

This skill provides a structured approach to handling errors in backend systems, including defining custom exceptions, implementing logging mechanisms, and setting up recovery strategies. It ensures that applications can gracefully handle failures while maintaining system stability and providing meaningful feedback.

When to use it

• When developing APIs that need consistent error responses for clients
• During debugging sessions where detailed logs are required to trace issues
• In production environments to ensure robustness against unexpected inputs or external service failures

Key capabilities

• Custom exception definitions for specific failure scenarios
• Centralized logging of errors with timestamps and context
• Automated retry mechanisms for transient failures
• Standardized error response formatting for API clients

Example prompts

• "Implement a custom exception for invalid user input in the authentication module."
• "Set up logging to capture all database connection errors with stack traces."
• "Create a retry policy for external service calls that fail due to network issues."

Tips & gotchas

• Ensure consistent naming conventions for exceptions to avoid confusion.
• Avoid overusing retries, as they can mask underlying issues rather than resolve them.