Go Error Handling Best Practices: Avoiding Sentinel and Error Types

This post explores three strategies for error handling in Go: sentinel errors, error types, and opaque errors. The author argues that sentinel errors and error types lead to code coupling and are not recommended. The best practice is opaque error handling, checking error behavior via interface assertions only when necessary. Use the `github.com/pkg/errors` package to elegantly handle and log errors, avoiding duplicate handling and information loss.