go-error-handling

Proper Go error handling enforces the single handling rule, ensuring errors are processed exactly once. This prevents common pitfalls by standardizing error creation, wrapping, propagation, and structured logging across a project using standard libraries.

You wrap and inspect Go errors by adding clear context during propagation, then inspecting error chains using `errors.Is` and `errors.As`. These standard library functions allow precise identification of specific error types within wrapped chains.

Use panic and recover in Go strictly for unrecoverable errors where normal execution cannot continue. Applying best practices for panic and recover ensures your program safely halts or recovers from severe states without mismanaging standard error flows.

Implement structured logging for Go error handling by recording stable, low-cardinality messages. This provides consistent context for wrapped errors during propagation, ensuring logs remain searchable and actionable without generating excessive unique message variations.

Yes, you can refactor existing Go code by applying these error handling best practices. This process reviews your codebase to ensure errors are handled consistently, properly wrapped, and effectively logged according to the single handling rule.